Merge pull request #6 from jellyfin/master

Bringing my branch up to sync

61 files changed, 1201 insertions, 955 deletions

diff --git a/MediaBrowser.Controller/Authentication/AuthenticationException.cs b/MediaBrowser.Controller/Authentication/AuthenticationException.cs
new file mode 100644
index 000000000..62eca3ea9
--- /dev/null
+++ b/MediaBrowser.Controller/Authentication/AuthenticationException.cs
@@ -0,0 +1,29 @@
+using System;
+
+namespace MediaBrowser.Controller.Authentication
+{
+    /// <summary>
+    /// The exception that is thrown when an attempt to authenticate fails.
+    /// </summary>
+    public class AuthenticationException : Exception
+    {
+        /// <inheritdoc />
+        public AuthenticationException() : base()
+        {
+
+        }
+
+        /// <inheritdoc />
+        public AuthenticationException(string message) : base(message)
+        {
+
+        }
+
+        /// <inheritdoc />
+        public AuthenticationException(string message, Exception innerException)
+            : base(message, innerException)
+        {
+
+        }
+    }
+}
diff --git a/MediaBrowser.Controller/Authentication/IAuthenticationProvider.cs b/MediaBrowser.Controller/Authentication/IAuthenticationProvider.cs
index 2cf531eed..f5571065f 100644
--- a/MediaBrowser.Controller/Authentication/IAuthenticationProvider.cs
+++ b/MediaBrowser.Controller/Authentication/IAuthenticationProvider.cs
@@ -9,10 +9,9 @@ namespace MediaBrowser.Controller.Authentication
         string Name { get; }
         bool IsEnabled { get; }
         Task<ProviderAuthenticationResult> Authenticate(string username, string password);
-        Task<bool> HasPassword(User user);
+        bool HasPassword(User user);
         Task ChangePassword(User user, string newPassword);
         void ChangeEasyPassword(User user, string newPassword, string newPasswordHash);
-        string GetPasswordHash(User user);
         string GetEasyPasswordHash(User user);
     }
 
diff --git a/MediaBrowser.Controller/Authentication/IPasswordResetProvider.cs b/MediaBrowser.Controller/Authentication/IPasswordResetProvider.cs
index 9e5cd8816..2639960e7 100644
--- a/MediaBrowser.Controller/Authentication/IPasswordResetProvider.cs
+++ b/MediaBrowser.Controller/Authentication/IPasswordResetProvider.cs
@@ -12,6 +12,7 @@ namespace MediaBrowser.Controller.Authentication
         Task<ForgotPasswordResult> StartForgotPasswordProcess(User user, bool isInNetwork);
         Task<PinRedeemResult> RedeemPasswordResetPin(string pin);
     }
+
     public class PasswordPinCreationResult
     {
         public string PinFile { get; set; }
diff --git a/MediaBrowser.Controller/Channels/Channel.cs b/MediaBrowser.Controller/Channels/Channel.cs
index adf03fb66..cdf2ca69e 100644
--- a/MediaBrowser.Controller/Channels/Channel.cs
+++ b/MediaBrowser.Controller/Channels/Channel.cs
@@ -1,10 +1,11 @@
 using System;
+using System.Globalization;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using MediaBrowser.Common.Progress;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Model.Querying;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Channels
 {
@@ -14,14 +15,14 @@ namespace MediaBrowser.Controller.Channels
         {
             if (user.Policy.BlockedChannels != null)
             {
-                if (user.Policy.BlockedChannels.Contains(Id.ToString("N"), StringComparer.OrdinalIgnoreCase))
+                if (user.Policy.BlockedChannels.Contains(Id.ToString("N", CultureInfo.InvariantCulture), StringComparer.OrdinalIgnoreCase))
                 {
                     return false;
                 }
             }
             else
             {
-                if (!user.Policy.EnableAllChannels && !user.Policy.EnabledChannels.Contains(Id.ToString("N"), StringComparer.OrdinalIgnoreCase))
+                if (!user.Policy.EnableAllChannels && !user.Policy.EnabledChannels.Contains(Id.ToString("N", CultureInfo.InvariantCulture), StringComparer.OrdinalIgnoreCase))
                 {
                     return false;
                 }
@@ -30,10 +31,10 @@ namespace MediaBrowser.Controller.Channels
             return base.IsVisible(user);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override SourceType SourceType => SourceType.Channel;
 
         protected override QueryResult<BaseItem> GetItemsInternal(InternalItemsQuery query)
@@ -60,7 +61,7 @@ namespace MediaBrowser.Controller.Channels
 
         public static string GetInternalMetadataPath(string basePath, Guid id)
         {
-            return System.IO.Path.Combine(basePath, "channels", id.ToString("N"), "metadata");
+            return System.IO.Path.Combine(basePath, "channels", id.ToString("N", CultureInfo.InvariantCulture), "metadata");
         }
 
         public override bool CanDelete()
diff --git a/MediaBrowser.Controller/Drawing/IImageEncoder.cs b/MediaBrowser.Controller/Drawing/IImageEncoder.cs
index 4eaecd0a0..a0f9ae46e 100644
--- a/MediaBrowser.Controller/Drawing/IImageEncoder.cs
+++ b/MediaBrowser.Controller/Drawing/IImageEncoder.cs
@@ -18,16 +18,6 @@ namespace MediaBrowser.Controller.Drawing
         IReadOnlyCollection<ImageFormat> SupportedOutputFormats { get; }
 
         /// <summary>
-        /// Encodes the image.
-        /// </summary>
-        string EncodeImage(string inputPath, DateTime dateModified, string outputPath, bool autoOrient, ImageOrientation? orientation, int quality, ImageProcessingOptions options, ImageFormat outputFormat);
-
-        /// <summary>
-        /// Creates the image collage.
-        /// </summary>
-        /// <param name="options">The options.</param>
-        void CreateImageCollage(ImageCollageOptions options);
-        /// <summary>
         /// Gets the name.
         /// </summary>
         /// <value>The name.</value>
@@ -46,5 +36,16 @@ namespace MediaBrowser.Controller.Drawing
         bool SupportsImageEncoding { get; }
 
         ImageDimensions GetImageSize(string path);
+
+        /// <summary>
+        /// Encodes the image.
+        /// </summary>
+        string EncodeImage(string inputPath, DateTime dateModified, string outputPath, bool autoOrient, ImageOrientation? orientation, int quality, ImageProcessingOptions options, ImageFormat outputFormat);
+
+        /// <summary>
+        /// Creates the image collage.
+        /// </summary>
+        /// <param name="options">The options.</param>
+        void CreateImageCollage(ImageCollageOptions options);
     }
 }
diff --git a/MediaBrowser.Controller/Drawing/IImageProcessor.cs b/MediaBrowser.Controller/Drawing/IImageProcessor.cs
index a11e2186f..a58a11bd1 100644
--- a/MediaBrowser.Controller/Drawing/IImageProcessor.cs
+++ b/MediaBrowser.Controller/Drawing/IImageProcessor.cs
@@ -24,7 +24,15 @@ namespace MediaBrowser.Controller.Drawing
         /// Gets the image enhancers.
         /// </summary>
         /// <value>The image enhancers.</value>
-        IImageEnhancer[] ImageEnhancers { get; }
+        IReadOnlyCollection<IImageEnhancer> ImageEnhancers { get; set; }
+
+        /// <summary>
+        /// Gets a value indicating whether [supports image collage creation].
+        /// </summary>
+        /// <value><c>true</c> if [supports image collage creation]; otherwise, <c>false</c>.</value>
+        bool SupportsImageCollageCreation { get; }
+
+        IImageEncoder ImageEncoder { get; set; }
 
         /// <summary>
         /// Gets the dimensions of the image.
@@ -51,18 +59,12 @@ namespace MediaBrowser.Controller.Drawing
         ImageDimensions GetImageDimensions(BaseItem item, ItemImageInfo info, bool updateItem);
 
         /// <summary>
-        /// Adds the parts.
-        /// </summary>
-        /// <param name="enhancers">The enhancers.</param>
-        void AddParts(IEnumerable<IImageEnhancer> enhancers);
-
-        /// <summary>
         /// Gets the supported enhancers.
         /// </summary>
         /// <param name="item">The item.</param>
         /// <param name="imageType">Type of the image.</param>
         /// <returns>IEnumerable{IImageEnhancer}.</returns>
-        IImageEnhancer[] GetSupportedEnhancers(BaseItem item, ImageType imageType);
+        IEnumerable<IImageEnhancer> GetSupportedEnhancers(BaseItem item, ImageType imageType);
 
         /// <summary>
         /// Gets the image cache tag.
@@ -80,7 +82,7 @@ namespace MediaBrowser.Controller.Drawing
         /// <param name="image">The image.</param>
         /// <param name="imageEnhancers">The image enhancers.</param>
         /// <returns>Guid.</returns>
-        string GetImageCacheTag(BaseItem item, ItemImageInfo image, IImageEnhancer[] imageEnhancers);
+        string GetImageCacheTag(BaseItem item, ItemImageInfo image, IReadOnlyCollection<IImageEnhancer> imageEnhancers);
 
         /// <summary>
         /// Processes the image.
@@ -109,7 +111,7 @@ namespace MediaBrowser.Controller.Drawing
         /// <summary>
         /// Gets the supported image output formats.
         /// </summary>
-        /// <returns>IReadOnlyCollection{ImageOutput}.</returns>
+        /// <returns><see cref="IReadOnlyCollection{ImageOutput}" />.</returns>
         IReadOnlyCollection<ImageFormat> GetSupportedImageOutputFormats();
 
         /// <summary>
@@ -118,14 +120,6 @@ namespace MediaBrowser.Controller.Drawing
         /// <param name="options">The options.</param>
         void CreateImageCollage(ImageCollageOptions options);
 
-        /// <summary>
-        /// Gets a value indicating whether [supports image collage creation].
-        /// </summary>
-        /// <value><c>true</c> if [supports image collage creation]; otherwise, <c>false</c>.</value>
-        bool SupportsImageCollageCreation { get; }
-
-        IImageEncoder ImageEncoder { get; set; }
-
         bool SupportsTransparency(string path);
     }
 }
diff --git a/MediaBrowser.Controller/Drawing/ImageProcessingOptions.cs b/MediaBrowser.Controller/Drawing/ImageProcessingOptions.cs
index db432f500..29addf6e6 100644
--- a/MediaBrowser.Controller/Drawing/ImageProcessingOptions.cs
+++ b/MediaBrowser.Controller/Drawing/ImageProcessingOptions.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using MediaBrowser.Controller.Entities;
@@ -33,9 +34,9 @@ namespace MediaBrowser.Controller.Drawing
 
         public int Quality { get; set; }
 
-        public IImageEnhancer[] Enhancers { get; set; }
+        public IReadOnlyCollection<IImageEnhancer> Enhancers { get; set; }
 
-        public ImageFormat[] SupportedOutputFormats { get; set; }
+        public IReadOnlyCollection<ImageFormat> SupportedOutputFormats { get; set; }
 
         public bool AddPlayedIndicator { get; set; }
 
diff --git a/MediaBrowser.Controller/Dto/IDtoService.cs b/MediaBrowser.Controller/Dto/IDtoService.cs
index 4b6fd58fe..ba693a065 100644
--- a/MediaBrowser.Controller/Dto/IDtoService.cs
+++ b/MediaBrowser.Controller/Dto/IDtoService.cs
@@ -57,7 +57,7 @@ namespace MediaBrowser.Controller.Dto
         /// <param name="options">The options.</param>
         /// <param name="user">The user.</param>
         /// <param name="owner">The owner.</param>
-        BaseItemDto[] GetBaseItemDtos(IReadOnlyList<BaseItem> items, DtoOptions options, User user = null, BaseItem owner = null);
+        IReadOnlyList<BaseItemDto> GetBaseItemDtos(IReadOnlyList<BaseItem> items, DtoOptions options, User user = null, BaseItem owner = null);
 
         /// <summary>
         /// Gets the item by name dto.
diff --git a/MediaBrowser.Controller/Entities/AggregateFolder.cs b/MediaBrowser.Controller/Entities/AggregateFolder.cs
index 054df21e5..cacda8140 100644
--- a/MediaBrowser.Controller/Entities/AggregateFolder.cs
+++ b/MediaBrowser.Controller/Entities/AggregateFolder.cs
@@ -2,13 +2,13 @@ using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Controller.IO;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.IO;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
@@ -23,7 +23,7 @@ namespace MediaBrowser.Controller.Entities
             PhysicalLocationsList = Array.Empty<string>();
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsPhysicalRoot => true;
 
         public override bool CanDelete()
@@ -31,7 +31,7 @@ namespace MediaBrowser.Controller.Entities
             return false;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => false;
 
         /// <summary>
@@ -45,7 +45,7 @@ namespace MediaBrowser.Controller.Entities
         /// <value>The virtual children.</value>
         public ConcurrentBag<BaseItem> VirtualChildren => _virtualChildren;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string[] PhysicalLocations => PhysicalLocationsList;
 
         public string[] PhysicalLocationsList { get; set; }
diff --git a/MediaBrowser.Controller/Entities/Audio/Audio.cs b/MediaBrowser.Controller/Entities/Audio/Audio.cs
index 13a6fe44a..a700d0be4 100644
--- a/MediaBrowser.Controller/Entities/Audio/Audio.cs
+++ b/MediaBrowser.Controller/Entities/Audio/Audio.cs
@@ -1,11 +1,12 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Persistence;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities.Audio
 {
@@ -19,15 +20,13 @@ namespace MediaBrowser.Controller.Entities.Audio
         IHasLookupInfo<SongInfo>,
         IHasMediaSources
     {
-        /// <summary>
-        /// Gets or sets the artist.
-        /// </summary>
-        /// <value>The artist.</value>
-        [IgnoreDataMember]
-        public string[] Artists { get; set; }
+        /// <inheritdoc />
+        [JsonIgnore]
+        public IReadOnlyList<string> Artists { get; set; }
 
-        [IgnoreDataMember]
-        public string[] AlbumArtists { get; set; }
+        /// <inheritdoc />
+        [JsonIgnore]
+        public IReadOnlyList<string> AlbumArtists { get; set; }
 
         public Audio()
         {
@@ -40,22 +39,22 @@ namespace MediaBrowser.Controller.Entities.Audio
             return 1;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAddingToPlaylist => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         protected override bool SupportsOwnedItems => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override Folder LatestItemsIndexContainer => AlbumEntity;
 
         public override bool CanDownload()
@@ -63,38 +62,14 @@ namespace MediaBrowser.Controller.Entities.Audio
             return IsFileProtocol;
         }
 
-        [IgnoreDataMember]
-        public string[] AllArtists
-        {
-            get
-            {
-                var list = new string[AlbumArtists.Length + Artists.Length];
-
-                var index = 0;
-                foreach (var artist in AlbumArtists)
-                {
-                    list[index] = artist;
-                    index++;
-                }
-                foreach (var artist in Artists)
-                {
-                    list[index] = artist;
-                    index++;
-                }
-
-                return list;
-
-            }
-        }
-
-        [IgnoreDataMember]
+        [JsonIgnore]
         public MusicAlbum AlbumEntity => FindParent<MusicAlbum>();
 
         /// <summary>
         /// Gets the type of the media.
         /// </summary>
         /// <value>The type of the media.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string MediaType => Model.Entities.MediaType.Audio;
 
         /// <summary>
@@ -125,7 +100,7 @@ namespace MediaBrowser.Controller.Entities.Audio
                 songKey = Album + "-" + songKey;
             }
 
-            var albumArtist = AlbumArtists.Length == 0 ? null : AlbumArtists[0];
+            var albumArtist = AlbumArtists.FirstOrDefault();
             if (!string.IsNullOrEmpty(albumArtist))
             {
                 songKey = albumArtist + "-" + songKey;
diff --git a/MediaBrowser.Controller/Entities/Audio/IHasAlbumArtist.cs b/MediaBrowser.Controller/Entities/Audio/IHasAlbumArtist.cs
index a269b3486..056f31f78 100644
--- a/MediaBrowser.Controller/Entities/Audio/IHasAlbumArtist.cs
+++ b/MediaBrowser.Controller/Entities/Audio/IHasAlbumArtist.cs
@@ -1,14 +1,35 @@
+using System.Collections.Generic;
+
 namespace MediaBrowser.Controller.Entities.Audio
 {
     public interface IHasAlbumArtist
     {
-        string[] AlbumArtists { get; set; }
+        IReadOnlyList<string> AlbumArtists { get; set; }
     }
 
     public interface IHasArtist
     {
-        string[] AllArtists { get; }
+        /// <summary>
+        /// Gets or sets the artists.
+        /// </summary>
+        /// <value>The artists.</value>
+        IReadOnlyList<string> Artists { get; set; }
+    }
+
+    public static class Extentions
+    {
+        public static IEnumerable<string> GetAllArtists<T>(this T item)
+            where T : IHasArtist, IHasAlbumArtist
+        {
+            foreach (var i in item.AlbumArtists)
+            {
+                yield return i;
+            }
 
-        string[] Artists { get; set; }
+            foreach (var i in item.Artists)
+            {
+                yield return i;
+            }
+        }
     }
 }
diff --git a/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs b/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs
index 5b2939b75..c216176e7 100644
--- a/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs
+++ b/MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Controller.Dto;
@@ -8,7 +9,6 @@ using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Users;
 
 namespace MediaBrowser.Controller.Entities.Audio
@@ -18,8 +18,11 @@ namespace MediaBrowser.Controller.Entities.Audio
     /// </summary>
     public class MusicAlbum : Folder, IHasAlbumArtist, IHasArtist, IHasMusicGenres, IHasLookupInfo<AlbumInfo>, IMetadataContainer
     {
-        public string[] AlbumArtists { get; set; }
-        public string[] Artists { get; set; }
+        /// <inheritdoc />
+        public IReadOnlyList<string> AlbumArtists { get; set; }
+
+        /// <inheritdoc />
+        public IReadOnlyList<string> Artists { get; set; }
 
         public MusicAlbum()
         {
@@ -27,13 +30,13 @@ namespace MediaBrowser.Controller.Entities.Audio
             AlbumArtists = Array.Empty<string>();
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAddingToPlaylist => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public MusicArtist MusicArtist => GetMusicArtist(new DtoOptions(true));
 
         public MusicArtist GetMusicArtist(DtoOptions options)
@@ -41,8 +44,7 @@ namespace MediaBrowser.Controller.Entities.Audio
             var parents = GetParents();
             foreach (var parent in parents)
             {
-                var artist = parent as MusicArtist;
-                if (artist != null)
+                if (parent is MusicArtist artist)
                 {
                     return artist;
                 }
@@ -56,46 +58,23 @@ namespace MediaBrowser.Controller.Entities.Audio
             return null;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsCumulativeRunTimeTicks => true;
 
-        [IgnoreDataMember]
-        public string[] AllArtists
-        {
-            get
-            {
-                var list = new string[AlbumArtists.Length + Artists.Length];
-
-                var index = 0;
-                foreach (var artist in AlbumArtists)
-                {
-                    list[index] = artist;
-                    index++;
-                }
-                foreach (var artist in Artists)
-                {
-                    list[index] = artist;
-                    index++;
-                }
-
-                return list;
-            }
-        }
-
-        [IgnoreDataMember]
-        public string AlbumArtist => AlbumArtists.Length == 0 ? null : AlbumArtists[0];
+        [JsonIgnore]
+        public string AlbumArtist => AlbumArtists.FirstOrDefault();
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
 
         /// <summary>
         /// Gets the tracks.
         /// </summary>
         /// <value>The tracks.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public IEnumerable<Audio> Tracks => GetRecursiveChildren(i => i is Audio).Cast<Audio>();
 
         protected override IEnumerable<BaseItem> GetEligibleChildrenForRecursiveChildren(User user)
@@ -216,8 +195,7 @@ namespace MediaBrowser.Controller.Entities.Audio
 
         private async Task RefreshArtists(MetadataRefreshOptions refreshOptions, CancellationToken cancellationToken)
         {
-            var all = AllArtists;
-            foreach (var i in all)
+            foreach (var i in this.GetAllArtists())
             {
                 // This should not be necessary but we're seeing some cases of it
                 if (string.IsNullOrEmpty(i))
diff --git a/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs b/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs
index 2d464bd32..efe0d3cf7 100644
--- a/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs
+++ b/MediaBrowser.Controller/Entities/Audio/MusicArtist.cs
@@ -1,13 +1,13 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Controller.Extensions;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Users;
 using Microsoft.Extensions.Logging;
 
@@ -18,25 +18,25 @@ namespace MediaBrowser.Controller.Entities.Audio
     /// </summary>
     public class MusicArtist : Folder, IItemByName, IHasMusicGenres, IHasDualAccess, IHasLookupInfo<ArtistInfo>
     {
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsAccessedByName => ParentId.Equals(Guid.Empty);
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsFolder => !IsAccessedByName;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsCumulativeRunTimeTicks => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsDisplayedAsFolder => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAddingToPlaylist => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => false;
 
         public override double GetDefaultPrimaryImageAspectRatio()
@@ -60,7 +60,7 @@ namespace MediaBrowser.Controller.Entities.Audio
             return LibraryManager.GetItemList(query);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override IEnumerable<BaseItem> Children
         {
             get
@@ -117,7 +117,7 @@ namespace MediaBrowser.Controller.Entities.Audio
         /// If the item is a folder, it returns the folder itself
         /// </summary>
         /// <value>The containing folder path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string ContainingFolderPath => Path;
 
         /// <summary>
@@ -164,7 +164,7 @@ namespace MediaBrowser.Controller.Entities.Audio
             return info;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
 
         public static string GetPath(string name)
diff --git a/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs b/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs
index d26aaf2bb..537e9630b 100644
--- a/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs
+++ b/MediaBrowser.Controller/Entities/Audio/MusicGenre.cs
@@ -1,7 +1,7 @@
 using System;
 using System.Collections.Generic;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Extensions;
-using MediaBrowser.Model.Serialization;
 using Microsoft.Extensions.Logging;
 
 namespace MediaBrowser.Controller.Entities.Audio
@@ -23,13 +23,13 @@ namespace MediaBrowser.Controller.Entities.Audio
             return GetUserDataKeys()[0];
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAddingToPlaylist => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAncestors => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsDisplayedAsFolder => true;
 
         /// <summary>
@@ -37,7 +37,7 @@ namespace MediaBrowser.Controller.Entities.Audio
         /// If the item is a folder, it returns the folder itself
         /// </summary>
         /// <value>The containing folder path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string ContainingFolderPath => Path;
 
         public override double GetDefaultPrimaryImageAspectRatio()
@@ -55,7 +55,7 @@ namespace MediaBrowser.Controller.Entities.Audio
             return true;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
 
         public IList<BaseItem> GetTaggedItems(InternalItemsQuery query)
diff --git a/MediaBrowser.Controller/Entities/AudioBook.cs b/MediaBrowser.Controller/Entities/AudioBook.cs
index 65c8a5fdd..a13873bf9 100644
--- a/MediaBrowser.Controller/Entities/AudioBook.cs
+++ b/MediaBrowser.Controller/Entities/AudioBook.cs
@@ -1,23 +1,23 @@
 using System;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
     public class AudioBook : Audio.Audio, IHasSeries, IHasLookupInfo<SongInfo>
     {
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPositionTicksResume => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SeriesPresentationUniqueKey { get; set; }
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SeriesName { get; set; }
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid SeriesId { get; set; }
 
         public string FindSeriesSortName()
diff --git a/MediaBrowser.Controller/Entities/BaseItem.cs b/MediaBrowser.Controller/Entities/BaseItem.cs
index 10a603e42..599d41bb2 100644
--- a/MediaBrowser.Controller/Entities/BaseItem.cs
+++ b/MediaBrowser.Controller/Entities/BaseItem.cs
@@ -4,6 +4,7 @@ using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Text;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Common.Extensions;
@@ -25,7 +26,6 @@ using MediaBrowser.Model.Library;
 using MediaBrowser.Model.LiveTv;
 using MediaBrowser.Model.MediaInfo;
 using MediaBrowser.Model.Providers;
-using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Users;
 using Microsoft.Extensions.Logging;
 
@@ -40,7 +40,7 @@ namespace MediaBrowser.Controller.Entities
         /// The supported image extensions
         /// </summary>
         public static readonly string[] SupportedImageExtensions
-            = new [] { ".png", ".jpg", ".jpeg", ".tbn", ".gif" };
+            = new[] { ".png", ".jpg", ".jpeg", ".tbn", ".gif" };
 
         private static readonly List<string> _supportedExtensions = new List<string>(SupportedImageExtensions)
         {
@@ -98,62 +98,62 @@ namespace MediaBrowser.Controller.Entities
             SampleFolderName
         };
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid[] ThemeSongIds { get; set; }
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid[] ThemeVideoIds { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string PreferredMetadataCountryCode { get; set; }
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string PreferredMetadataLanguage { get; set; }
 
         public long? Size { get; set; }
         public string Container { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string Tagline { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual ItemImageInfo[] ImageInfos { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsVirtualItem { get; set; }
 
         /// <summary>
         /// Gets or sets the album.
         /// </summary>
         /// <value>The album.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string Album { get; set; }
 
         /// <summary>
         /// Gets or sets the channel identifier.
         /// </summary>
         /// <value>The channel identifier.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid ChannelId { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsAddingToPlaylist => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool AlwaysScanInternalMetadataPath => false;
 
         /// <summary>
         /// Gets a value indicating whether this instance is in mixed folder.
         /// </summary>
         /// <value><c>true</c> if this instance is in mixed folder; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsInMixedFolder { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsPlayedStatus => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsPositionTicksResume => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsRemoteImageDownloading => true;
 
         private string _name;
@@ -161,7 +161,7 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the name.
         /// </summary>
         /// <value>The name.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual string Name
         {
             get => _name;
@@ -174,35 +174,35 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsUnaired => PremiereDate.HasValue && PremiereDate.Value.ToLocalTime().Date >= DateTime.Now.Date;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public int? TotalBitrate { get; set; }
-        [IgnoreDataMember]
+        [JsonIgnore]
         public ExtraType? ExtraType { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsThemeMedia => ExtraType.HasValue && (ExtraType.Value == Model.Entities.ExtraType.ThemeSong || ExtraType.Value == Model.Entities.ExtraType.ThemeVideo);
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string OriginalTitle { get; set; }
 
         /// <summary>
         /// Gets or sets the id.
         /// </summary>
         /// <value>The id.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid Id { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid OwnerId { get; set; }
 
         /// <summary>
         /// Gets or sets the audio.
         /// </summary>
         /// <value>The audio.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public ProgramAudio? Audio { get; set; }
 
         /// <summary>
@@ -210,7 +210,7 @@ namespace MediaBrowser.Controller.Entities
         /// Default is based on the type for everything except actual generic folders.
         /// </summary>
         /// <value>The display prefs id.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual Guid DisplayPreferencesId
         {
             get
@@ -224,10 +224,10 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the path.
         /// </summary>
         /// <value>The path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual string Path { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual SourceType SourceType
         {
             get
@@ -245,7 +245,7 @@ namespace MediaBrowser.Controller.Entities
         /// Returns the folder containing the item.
         /// If the item is a folder, it returns the folder itself
         /// </summary>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual string ContainingFolderPath
         {
             get
@@ -263,26 +263,26 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the name of the service.
         /// </summary>
         /// <value>The name of the service.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string ServiceName { get; set; }
 
         /// <summary>
         /// If this content came from an external service, the id of the content on that service
         /// </summary>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string ExternalId { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string ExternalSeriesId { get; set; }
 
         /// <summary>
         /// Gets or sets the etag.
         /// </summary>
         /// <value>The etag.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string ExternalEtag { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool IsHidden => false;
 
         public BaseItem GetOwner()
@@ -295,7 +295,7 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the type of the location.
         /// </summary>
         /// <value>The type of the location.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual LocationType LocationType
         {
             get
@@ -320,7 +320,7 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public MediaProtocol? PathProtocol
         {
             get
@@ -343,13 +343,13 @@ namespace MediaBrowser.Controller.Entities
             return current.HasValue && current.Value == protocol;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsFileProtocol => IsPathProtocol(MediaProtocol.File);
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool HasPathProtocol => PathProtocol.HasValue;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsLocalMetadata
         {
             get
@@ -363,7 +363,7 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual string FileNameWithoutExtension
         {
             get
@@ -377,7 +377,7 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool EnableAlphaNumericSorting => true;
 
         private List<Tuple<StringBuilder, bool>> GetSortChunks(string s1)
@@ -418,7 +418,7 @@ namespace MediaBrowser.Controller.Entities
         /// This is just a helper for convenience
         /// </summary>
         /// <value>The primary image path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string PrimaryImagePath => this.GetImagePath(ImageType.Primary);
 
         public bool IsMetadataFetcherEnabled(LibraryOptions libraryOptions, string name)
@@ -503,7 +503,7 @@ namespace MediaBrowser.Controller.Entities
 
                 foreach (var folder in collectionFolders)
                 {
-                    if (allowed.Contains(folder.Id.ToString("N"), StringComparer.OrdinalIgnoreCase))
+                    if (allowed.Contains(folder.Id.ToString("N", CultureInfo.InvariantCulture), StringComparer.OrdinalIgnoreCase))
                     {
                         return true;
                     }
@@ -544,20 +544,20 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the date created.
         /// </summary>
         /// <value>The date created.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public DateTime DateCreated { get; set; }
 
         /// <summary>
         /// Gets or sets the date modified.
         /// </summary>
         /// <value>The date modified.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public DateTime DateModified { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public DateTime DateLastSaved { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public DateTime DateLastRefreshed { get; set; }
 
         /// <summary>
@@ -583,24 +583,24 @@ namespace MediaBrowser.Controller.Entities
             return Name;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsLocked { get; set; }
 
         /// <summary>
         /// Gets or sets the locked fields.
         /// </summary>
         /// <value>The locked fields.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public MetadataFields[] LockedFields { get; set; }
 
         /// <summary>
         /// Gets the type of the media.
         /// </summary>
         /// <value>The type of the media.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual string MediaType => null;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual string[] PhysicalLocations
         {
             get
@@ -619,7 +619,7 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the name of the forced sort.
         /// </summary>
         /// <value>The name of the forced sort.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string ForcedSortName
         {
             get => _forcedSortName;
@@ -631,7 +631,7 @@ namespace MediaBrowser.Controller.Entities
         /// Gets the name of the sort.
         /// </summary>
         /// <value>The name of the sort.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SortName
         {
             get
@@ -664,10 +664,10 @@ namespace MediaBrowser.Controller.Entities
         {
             if (SourceType == SourceType.Channel)
             {
-                return System.IO.Path.Combine(basePath, "channels", ChannelId.ToString("N"), Id.ToString("N"));
+                return System.IO.Path.Combine(basePath, "channels", ChannelId.ToString("N", CultureInfo.InvariantCulture), Id.ToString("N", CultureInfo.InvariantCulture));
             }
 
-            var idString = Id.ToString("N");
+            var idString = Id.ToString("N", CultureInfo.InvariantCulture);
 
             basePath = System.IO.Path.Combine(basePath, "library");
 
@@ -744,7 +744,7 @@ namespace MediaBrowser.Controller.Entities
             return builder.ToString().RemoveDiacritics();
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool EnableMediaSourceDisplay
         {
             get
@@ -758,14 +758,14 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid ParentId { get; set; }
 
         /// <summary>
         /// Gets or sets the parent.
         /// </summary>
         /// <value>The parent.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Folder Parent
         {
             get => GetParent() as Folder;
@@ -822,7 +822,7 @@ namespace MediaBrowser.Controller.Entities
             return null;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual Guid DisplayParentId
         {
             get
@@ -832,7 +832,7 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public BaseItem DisplayParent
         {
             get
@@ -850,97 +850,97 @@ namespace MediaBrowser.Controller.Entities
         /// When the item first debuted. For movies this could be premiere date, episodes would be first aired
         /// </summary>
         /// <value>The premiere date.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public DateTime? PremiereDate { get; set; }
 
         /// <summary>
         /// Gets or sets the end date.
         /// </summary>
         /// <value>The end date.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public DateTime? EndDate { get; set; }
 
         /// <summary>
         /// Gets or sets the official rating.
         /// </summary>
         /// <value>The official rating.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string OfficialRating { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public int InheritedParentalRatingValue { get; set; }
 
         /// <summary>
         /// Gets or sets the critic rating.
         /// </summary>
         /// <value>The critic rating.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public float? CriticRating { get; set; }
 
         /// <summary>
         /// Gets or sets the custom rating.
         /// </summary>
         /// <value>The custom rating.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string CustomRating { get; set; }
 
         /// <summary>
         /// Gets or sets the overview.
         /// </summary>
         /// <value>The overview.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string Overview { get; set; }
 
         /// <summary>
         /// Gets or sets the studios.
         /// </summary>
         /// <value>The studios.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string[] Studios { get; set; }
 
         /// <summary>
         /// Gets or sets the genres.
         /// </summary>
         /// <value>The genres.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string[] Genres { get; set; }
 
         /// <summary>
         /// Gets or sets the tags.
         /// </summary>
         /// <value>The tags.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string[] Tags { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string[] ProductionLocations { get; set; }
 
         /// <summary>
         /// Gets or sets the home page URL.
         /// </summary>
         /// <value>The home page URL.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string HomePageUrl { get; set; }
 
         /// <summary>
         /// Gets or sets the community rating.
         /// </summary>
         /// <value>The community rating.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public float? CommunityRating { get; set; }
 
         /// <summary>
         /// Gets or sets the run time ticks.
         /// </summary>
         /// <value>The run time ticks.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public long? RunTimeTicks { get; set; }
 
         /// <summary>
         /// Gets or sets the production year.
         /// </summary>
         /// <value>The production year.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public int? ProductionYear { get; set; }
 
         /// <summary>
@@ -948,20 +948,20 @@ namespace MediaBrowser.Controller.Entities
         /// This could be episode number, album track number, etc.
         /// </summary>
         /// <value>The index number.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public int? IndexNumber { get; set; }
 
         /// <summary>
         /// For an episode this could be the season number, or for a song this could be the disc number.
         /// </summary>
         /// <value>The parent index number.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public int? ParentIndexNumber { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool HasLocalAlternateVersions => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string OfficialRatingForComparison
         {
             get
@@ -982,7 +982,7 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string CustomRatingForComparison
         {
             get
@@ -1095,7 +1095,7 @@ namespace MediaBrowser.Controller.Entities
 
             var info = new MediaSourceInfo
             {
-                Id = item.Id.ToString("N"),
+                Id = item.Id.ToString("N", CultureInfo.InvariantCulture),
                 Protocol = protocol ?? MediaProtocol.File,
                 MediaStreams = MediaSourceManager.GetMediaStreams(item.Id),
                 Name = GetMediaSourceName(item),
@@ -1113,7 +1113,7 @@ namespace MediaBrowser.Controller.Entities
 
             if (info.Protocol == MediaProtocol.File)
             {
-                info.ETag = item.DateModified.Ticks.ToString(CultureInfo.InvariantCulture).GetMD5().ToString("N");
+                info.ETag = item.DateModified.Ticks.ToString(CultureInfo.InvariantCulture).GetMD5().ToString("N", CultureInfo.InvariantCulture);
             }
 
             var video = item as Video;
@@ -1407,13 +1407,13 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         protected virtual bool SupportsOwnedItems => !ParentId.Equals(Guid.Empty) && IsFileProtocol;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsPeople => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsThemeMedia => false;
 
         /// <summary>
@@ -1613,10 +1613,10 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the provider ids.
         /// </summary>
         /// <value>The provider ids.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Dictionary<string, string> ProviderIds { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual Folder LatestItemsIndexContainer => null;
 
         public virtual double GetDefaultPrimaryImageAspectRatio()
@@ -1626,10 +1626,10 @@ namespace MediaBrowser.Controller.Entities
 
         public virtual string CreatePresentationUniqueKey()
         {
-            return Id.ToString("N");
+            return Id.ToString("N", CultureInfo.InvariantCulture);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string PresentationUniqueKey { get; set; }
 
         public string GetPresentationUniqueKey()
@@ -1934,7 +1934,7 @@ namespace MediaBrowser.Controller.Entities
             return IsVisibleStandaloneInternal(user, true);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsInheritedParentImages => false;
 
         protected bool IsVisibleStandaloneInternal(User user, bool checkFolders)
@@ -1977,10 +1977,10 @@ namespace MediaBrowser.Controller.Entities
         /// Gets a value indicating whether this instance is folder.
         /// </summary>
         /// <value><c>true</c> if this instance is folder; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool IsFolder => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool IsDisplayedAsFolder => false;
 
         public virtual string GetClientTypeName()
@@ -2045,7 +2045,7 @@ namespace MediaBrowser.Controller.Entities
 
                 if (itemByPath == null)
                 {
-                    //Logger.LogWarning("Unable to find linked item at path {0}", info.Path);
+                    Logger.LogWarning("Unable to find linked item at path {0}", info.Path);
                 }
 
                 return itemByPath;
@@ -2057,7 +2057,7 @@ namespace MediaBrowser.Controller.Entities
 
                 if (item == null)
                 {
-                    //Logger.LogWarning("Unable to find linked item at path {0}", info.Path);
+                    Logger.LogWarning("Unable to find linked item at path {0}", info.Path);
                 }
 
                 return item;
@@ -2066,7 +2066,7 @@ namespace MediaBrowser.Controller.Entities
             return null;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool EnableRememberingTrackSelections => true;
 
         /// <summary>
@@ -2085,14 +2085,17 @@ namespace MediaBrowser.Controller.Entities
 
             if (!current.Contains(name, StringComparer.OrdinalIgnoreCase))
             {
-                if (current.Length == 0)
+                int curLen = current.Length;
+                if (curLen == 0)
                 {
                     Studios = new[] { name };
                 }
                 else
                 {
-                    var list =
-                    Studios = current.Concat(new[] { name }).ToArray();
+                    var newArr = new string[curLen + 1];
+                    current.CopyTo(newArr, 0);
+                    newArr[curLen] = name;
+                    Studios = newArr;
                 }
             }
         }
@@ -2231,8 +2234,12 @@ namespace MediaBrowser.Controller.Entities
 
             else
             {
-                var currentCount = ImageInfos.Length;
-                ImageInfos = ImageInfos.Concat(new[] { image }).ToArray();
+                var current = ImageInfos;
+                var currentCount = current.Length;
+                var newArr = new ItemImageInfo[currentCount + 1];
+                current.CopyTo(newArr, 0);
+                newArr[currentCount] = image;
+                ImageInfos = newArr;
             }
         }
 
@@ -2736,7 +2743,7 @@ namespace MediaBrowser.Controller.Entities
         {
             var list = GetEtagValues(user);
 
-            return string.Join("|", list.ToArray()).GetMD5().ToString("N");
+            return string.Join("|", list.ToArray()).GetMD5().ToString("N", CultureInfo.InvariantCulture);
         }
 
         protected virtual List<string> GetEtagValues(User user)
@@ -2769,7 +2776,7 @@ namespace MediaBrowser.Controller.Entities
             return null;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool IsTopParent
         {
             get
@@ -2797,10 +2804,10 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsAncestors => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool StopRefreshIfLocalMetadataFound => true;
 
         public virtual IEnumerable<Guid> GetIdsForAncestorQuery()
@@ -2871,16 +2878,24 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the remote trailers.
         /// </summary>
         /// <value>The remote trailers.</value>
-        public MediaUrl[] RemoteTrailers { get; set; }
+        public IReadOnlyList<MediaUrl> RemoteTrailers { get; set; }
 
         public IEnumerable<BaseItem> GetExtras()
         {
             return ExtraIds.Select(LibraryManager.GetItemById).Where(i => i != null).OrderBy(i => i.SortName);
         }
 
-        public IEnumerable<BaseItem> GetExtras(ExtraType[] extraTypes)
+        public IEnumerable<BaseItem> GetExtras(IReadOnlyCollection<ExtraType> extraTypes)
         {
-            return ExtraIds.Select(LibraryManager.GetItemById).Where(i => i != null && extraTypes.Contains(i.ExtraType.Value)).OrderBy(i => i.SortName);
+            return ExtraIds.Select(LibraryManager.GetItemById).Where(i => i != null && extraTypes.Contains(i.ExtraType.Value));
+        }
+
+        public IEnumerable<BaseItem> GetTrailers()
+        {
+            if (this is IHasTrailers)
+                return ((IHasTrailers)this).LocalTrailerIds.Select(LibraryManager.GetItemById).Where(i => i != null).OrderBy(i => i.SortName);
+            else
+                return Array.Empty<BaseItem>();
         }
 
         public IEnumerable<BaseItem> GetDisplayExtras()
@@ -2900,7 +2915,7 @@ namespace MediaBrowser.Controller.Entities
         }
 
         // Possible types of extra videos
-        public static ExtraType[] DisplayExtraTypes = new[] { Model.Entities.ExtraType.BehindTheScenes, Model.Entities.ExtraType.Clip, Model.Entities.ExtraType.DeletedScene, Model.Entities.ExtraType.Interview, Model.Entities.ExtraType.Sample, Model.Entities.ExtraType.Scene };
+        public static readonly IReadOnlyCollection<ExtraType> DisplayExtraTypes = new[] { Model.Entities.ExtraType.BehindTheScenes, Model.Entities.ExtraType.Clip, Model.Entities.ExtraType.DeletedScene, Model.Entities.ExtraType.Interview, Model.Entities.ExtraType.Sample, Model.Entities.ExtraType.Scene };
 
         public virtual bool SupportsExternalTransfer => false;
     }
diff --git a/MediaBrowser.Controller/Entities/BasePluginFolder.cs b/MediaBrowser.Controller/Entities/BasePluginFolder.cs
index 8cdb9695c..62d172fcc 100644
--- a/MediaBrowser.Controller/Entities/BasePluginFolder.cs
+++ b/MediaBrowser.Controller/Entities/BasePluginFolder.cs
@@ -1,4 +1,4 @@
-using MediaBrowser.Model.Serialization;
+using System.Text.Json.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
@@ -8,7 +8,7 @@ namespace MediaBrowser.Controller.Entities
     /// </summary>
     public abstract class BasePluginFolder : Folder, ICollectionFolder
     {
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual string CollectionType => null;
 
         public override bool CanDelete()
@@ -21,10 +21,10 @@ namespace MediaBrowser.Controller.Entities
             return true;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
 
         //public override double? GetDefaultPrimaryImageAspectRatio()
diff --git a/MediaBrowser.Controller/Entities/Book.cs b/MediaBrowser.Controller/Entities/Book.cs
index 7a23d9a66..44c35374d 100644
--- a/MediaBrowser.Controller/Entities/Book.cs
+++ b/MediaBrowser.Controller/Entities/Book.cs
@@ -1,21 +1,21 @@
 using System;
 using System.Linq;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
     public class Book : BaseItem, IHasLookupInfo<BookInfo>, IHasSeries
     {
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string MediaType => Model.Entities.MediaType.Book;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SeriesPresentationUniqueKey { get; set; }
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SeriesName { get; set; }
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid SeriesId { get; set; }
 
         public string FindSeriesSortName()
diff --git a/MediaBrowser.Controller/Entities/CollectionFolder.cs b/MediaBrowser.Controller/Entities/CollectionFolder.cs
index 275052d48..bc5e7467e 100644
--- a/MediaBrowser.Controller/Entities/CollectionFolder.cs
+++ b/MediaBrowser.Controller/Entities/CollectionFolder.cs
@@ -2,14 +2,13 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
-
 using MediaBrowser.Controller.IO;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
-using MediaBrowser.Model.Extensions;
 using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Serialization;
 
@@ -33,10 +32,10 @@ namespace MediaBrowser.Controller.Entities
             PhysicalFolderIds = Array.Empty<Guid>();
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => false;
 
         public override bool CanDelete()
@@ -144,10 +143,10 @@ namespace MediaBrowser.Controller.Entities
         /// Allow different display preferences for each collection folder
         /// </summary>
         /// <value>The display prefs id.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override Guid DisplayPreferencesId => Id;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string[] PhysicalLocations => PhysicalLocationsList;
 
         public override bool IsSaveLocalMetadataEnabled()
@@ -311,7 +310,7 @@ namespace MediaBrowser.Controller.Entities
         /// Our children are actually just references to the ones in the physical root...
         /// </summary>
         /// <value>The actual children.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override IEnumerable<BaseItem> Children => GetActualChildren();
 
         public IEnumerable<BaseItem> GetActualChildren()
@@ -361,7 +360,7 @@ namespace MediaBrowser.Controller.Entities
             return result;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
     }
 }
diff --git a/MediaBrowser.Controller/Entities/Extensions.cs b/MediaBrowser.Controller/Entities/Extensions.cs
index f3bddd29c..d2ca11740 100644
--- a/MediaBrowser.Controller/Entities/Extensions.cs
+++ b/MediaBrowser.Controller/Entities/Extensions.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Linq;
+using MediaBrowser.Common.Extensions;
 using MediaBrowser.Model.Entities;
 
 namespace MediaBrowser.Controller.Entities
@@ -28,13 +29,17 @@ namespace MediaBrowser.Controller.Entities
                     Url = url
                 };
 
-                if (item.RemoteTrailers.Length == 0)
+                if (item.RemoteTrailers.Count == 0)
                 {
                     item.RemoteTrailers = new[] { mediaUrl };
                 }
                 else
                 {
-                    item.RemoteTrailers = item.RemoteTrailers.Concat(new[] { mediaUrl }).ToArray();
+                    var oldIds = item.RemoteTrailers;
+                    var newIds = new MediaUrl[oldIds.Count + 1];
+                    oldIds.CopyTo(newIds);
+                    newIds[oldIds.Count] = mediaUrl;
+                    item.RemoteTrailers = newIds;
                 }
             }
         }
diff --git a/MediaBrowser.Controller/Entities/Folder.cs b/MediaBrowser.Controller/Entities/Folder.cs
index c056bc0b4..61cc208d7 100644
--- a/MediaBrowser.Controller/Entities/Folder.cs
+++ b/MediaBrowser.Controller/Entities/Folder.cs
@@ -1,7 +1,9 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Common.Progress;
@@ -17,7 +19,6 @@ using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Querying;
-using MediaBrowser.Model.Serialization;
 using Microsoft.Extensions.Logging;
 
 namespace MediaBrowser.Controller.Entities
@@ -38,7 +39,7 @@ namespace MediaBrowser.Controller.Entities
 
         public LinkedChild[] LinkedChildren { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public DateTime? DateLastMediaAdded { get; set; }
 
         public Folder()
@@ -46,35 +47,35 @@ namespace MediaBrowser.Controller.Entities
             LinkedChildren = Array.Empty<LinkedChild>();
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsThemeMedia => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool IsPreSorted => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool IsPhysicalRoot => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => true;
 
         /// <summary>
         /// Gets a value indicating whether this instance is folder.
         /// </summary>
         /// <value><c>true</c> if this instance is folder; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsFolder => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsDisplayedAsFolder => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsCumulativeRunTimeTicks => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsDateLastMediaAdded => false;
 
         public override bool CanDelete()
@@ -99,7 +100,7 @@ namespace MediaBrowser.Controller.Entities
             return baseResult;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string FileNameWithoutExtension
         {
             get
@@ -126,7 +127,7 @@ namespace MediaBrowser.Controller.Entities
             return true;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         protected virtual bool SupportsShortcutChildren => false;
 
         /// <summary>
@@ -161,14 +162,14 @@ namespace MediaBrowser.Controller.Entities
         /// Gets the actual children.
         /// </summary>
         /// <value>The actual children.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual IEnumerable<BaseItem> Children => LoadChildren();
 
         /// <summary>
         /// thread-safe access to all recursive children of this folder - without regard to user
         /// </summary>
         /// <value>The recursive children.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public IEnumerable<BaseItem> RecursiveChildren => GetRecursiveChildren();
 
         public override bool IsVisible(User user)
@@ -177,7 +178,7 @@ namespace MediaBrowser.Controller.Entities
             {
                 if (user.Policy.BlockedMediaFolders != null)
                 {
-                    if (user.Policy.BlockedMediaFolders.Contains(Id.ToString("N"), StringComparer.OrdinalIgnoreCase) ||
+                    if (user.Policy.BlockedMediaFolders.Contains(Id.ToString("N", CultureInfo.InvariantCulture), StringComparer.OrdinalIgnoreCase) ||
 
                         // Backwards compatibility
                         user.Policy.BlockedMediaFolders.Contains(Name, StringComparer.OrdinalIgnoreCase))
@@ -187,7 +188,7 @@ namespace MediaBrowser.Controller.Entities
                 }
                 else
                 {
-                    if (!user.Policy.EnableAllFolders && !user.Policy.EnabledFolders.Contains(Id.ToString("N"), StringComparer.OrdinalIgnoreCase))
+                    if (!user.Policy.EnableAllFolders && !user.Policy.EnabledFolders.Contains(Id.ToString("N", CultureInfo.InvariantCulture), StringComparer.OrdinalIgnoreCase))
                     {
                         return false;
                     }
@@ -665,36 +666,36 @@ namespace MediaBrowser.Controller.Entities
             query.StartIndex = null;
             query.Limit = null;
 
-            var itemsList = LibraryManager.GetItemList(query);
+            IEnumerable<BaseItem> itemsList = LibraryManager.GetItemList(query);
             var user = query.User;
 
             if (user != null)
             {
                 // needed for boxsets
-                itemsList = itemsList.Where(i => i.IsVisibleStandalone(query.User)).ToList();
+                itemsList = itemsList.Where(i => i.IsVisibleStandalone(query.User));
             }
 
-            BaseItem[] returnItems;
+            IEnumerable<BaseItem> returnItems;
             int totalCount = 0;
 
             if (query.EnableTotalRecordCount)
             {
-                var itemsArray = itemsList.ToArray();
-                totalCount = itemsArray.Length;
-                returnItems = itemsArray;
+                var itemArray = itemsList.ToArray();
+                totalCount = itemArray.Length;
+                returnItems = itemArray;
             }
             else
             {
-                returnItems = itemsList.ToArray();
+                returnItems = itemsList;
             }
 
             if (limit.HasValue)
             {
-                returnItems = returnItems.Skip(startIndex ?? 0).Take(limit.Value).ToArray();
+                returnItems = returnItems.Skip(startIndex ?? 0).Take(limit.Value);
             }
             else if (startIndex.HasValue)
             {
-                returnItems = returnItems.Skip(startIndex.Value).ToArray();
+                returnItems = returnItems.Skip(startIndex.Value);
             }
 
             return new QueryResult<BaseItem>
@@ -1427,7 +1428,7 @@ namespace MediaBrowser.Controller.Entities
                 .Where(i => i.Item2 != null);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         protected override bool SupportsOwnedItems => base.SupportsOwnedItems || SupportsShortcutChildren;
 
         protected override async Task<bool> RefreshedOwnedItems(MetadataRefreshOptions options, List<FileSystemMetadata> fileSystemChildren, CancellationToken cancellationToken)
@@ -1594,7 +1595,7 @@ namespace MediaBrowser.Controller.Entities
             return !IsPlayed(user);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public virtual bool SupportsUserDataFromChildren
         {
             get
diff --git a/MediaBrowser.Controller/Entities/Genre.cs b/MediaBrowser.Controller/Entities/Genre.cs
index 44cb62d22..773c7df34 100644
--- a/MediaBrowser.Controller/Entities/Genre.cs
+++ b/MediaBrowser.Controller/Entities/Genre.cs
@@ -1,8 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.Extensions;
-using MediaBrowser.Model.Serialization;
 using Microsoft.Extensions.Logging;
 
 namespace MediaBrowser.Controller.Entities
@@ -34,13 +34,13 @@ namespace MediaBrowser.Controller.Entities
         /// If the item is a folder, it returns the folder itself
         /// </summary>
         /// <value>The containing folder path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string ContainingFolderPath => Path;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsDisplayedAsFolder => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAncestors => false;
 
         public override bool IsSaveLocalMetadataEnabled()
@@ -61,7 +61,7 @@ namespace MediaBrowser.Controller.Entities
             return LibraryManager.GetItemList(query);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
 
         public static string GetPath(string name)
diff --git a/MediaBrowser.Controller/Entities/IHasTrailers.cs b/MediaBrowser.Controller/Entities/IHasTrailers.cs
index 3bdb9b64a..dd8e3c45f 100644
--- a/MediaBrowser.Controller/Entities/IHasTrailers.cs
+++ b/MediaBrowser.Controller/Entities/IHasTrailers.cs
@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using MediaBrowser.Model.Entities;
 
 namespace MediaBrowser.Controller.Entities
@@ -11,29 +10,82 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the remote trailers.
         /// </summary>
         /// <value>The remote trailers.</value>
-        MediaUrl[] RemoteTrailers { get; set; }
+        IReadOnlyList<MediaUrl> RemoteTrailers { get; set; }
 
         /// <summary>
         /// Gets or sets the local trailer ids.
         /// </summary>
         /// <value>The local trailer ids.</value>
-        Guid[] LocalTrailerIds { get; set; }
-        Guid[] RemoteTrailerIds { get; set; }
+        IReadOnlyList<Guid> LocalTrailerIds { get; set; }
+
+        /// <summary>
+        /// Gets or sets the remote trailer ids.
+        /// </summary>
+        /// <value>The remote trailer ids.</value>
+        IReadOnlyList<Guid> RemoteTrailerIds { get; set; }
+
         Guid Id { get; set; }
     }
 
+    /// <summary>
+    /// Class providing extension methods for working with <see cref="IHasTrailers" />.
+    /// </summary>
     public static class HasTrailerExtensions
     {
         /// <summary>
+        /// Gets the trailer count.
+        /// </summary>
+        /// <returns><see cref="IReadOnlyList{Guid}" />.</returns>
+        public static int GetTrailerCount(this IHasTrailers item)
+            => item.LocalTrailerIds.Count + item.RemoteTrailerIds.Count;
+
+        /// <summary>
         /// Gets the trailer ids.
         /// </summary>
-        /// <returns>List&lt;Guid&gt;.</returns>
-        public static List<Guid> GetTrailerIds(this IHasTrailers item)
+        /// <returns><see cref="IReadOnlyList{Guid}" />.</returns>
+        public static IReadOnlyList<Guid> GetTrailerIds(this IHasTrailers item)
         {
-            var list = item.LocalTrailerIds.ToList();
-            list.AddRange(item.RemoteTrailerIds);
-            return list;
+            var localIds = item.LocalTrailerIds;
+            var remoteIds = item.RemoteTrailerIds;
+
+            var all = new Guid[localIds.Count + remoteIds.Count];
+            var index = 0;
+            foreach (var id in localIds)
+            {
+                all[index++] = id;
+            }
+
+            foreach (var id in remoteIds)
+            {
+                all[index++] = id;
+            }
+
+            return all;
         }
 
+        /// <summary>
+        /// Gets the trailers.
+        /// </summary>
+        /// <returns><see cref="IReadOnlyList{BaseItem}" />.</returns>
+        public static IReadOnlyList<BaseItem> GetTrailers(this IHasTrailers item)
+        {
+            var localIds = item.LocalTrailerIds;
+            var remoteIds = item.RemoteTrailerIds;
+            var libraryManager = BaseItem.LibraryManager;
+
+            var all = new BaseItem[localIds.Count + remoteIds.Count];
+            var index = 0;
+            foreach (var id in localIds)
+            {
+                all[index++] = libraryManager.GetItemById(id);
+            }
+
+            foreach (var id in remoteIds)
+            {
+                all[index++] = libraryManager.GetItemById(id);
+            }
+
+            return all;
+        }
     }
 }
diff --git a/MediaBrowser.Controller/Entities/ItemImageInfo.cs b/MediaBrowser.Controller/Entities/ItemImageInfo.cs
index 848493864..fc46dec2e 100644
--- a/MediaBrowser.Controller/Entities/ItemImageInfo.cs
+++ b/MediaBrowser.Controller/Entities/ItemImageInfo.cs
@@ -1,6 +1,6 @@
 using System;
+using System.Text.Json.Serialization;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
@@ -28,7 +28,7 @@ namespace MediaBrowser.Controller.Entities
 
         public int Height { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsLocalFile => Path == null || !Path.StartsWith("http", StringComparison.OrdinalIgnoreCase);
     }
 }
diff --git a/MediaBrowser.Controller/Entities/LinkedChild.cs b/MediaBrowser.Controller/Entities/LinkedChild.cs
index bb2d03246..d88c31007 100644
--- a/MediaBrowser.Controller/Entities/LinkedChild.cs
+++ b/MediaBrowser.Controller/Entities/LinkedChild.cs
@@ -1,7 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
+using System.Text.Json.Serialization;
 using MediaBrowser.Model.IO;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
@@ -11,7 +12,7 @@ namespace MediaBrowser.Controller.Entities
         public LinkedChildType Type { get; set; }
         public string LibraryItemId { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string Id { get; set; }
 
         /// <summary>
@@ -29,7 +30,7 @@ namespace MediaBrowser.Controller.Entities
 
             if (string.IsNullOrEmpty(child.Path))
             {
-                child.LibraryItemId = item.Id.ToString("N");
+                child.LibraryItemId = item.Id.ToString("N", CultureInfo.InvariantCulture);
             }
 
             return child;
@@ -37,7 +38,7 @@ namespace MediaBrowser.Controller.Entities
 
         public LinkedChild()
         {
-            Id = Guid.NewGuid().ToString("N");
+            Id = Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture);
         }
     }
 
diff --git a/MediaBrowser.Controller/Entities/Movies/BoxSet.cs b/MediaBrowser.Controller/Entities/Movies/BoxSet.cs
index a532b5ee9..feaf8c45a 100644
--- a/MediaBrowser.Controller/Entities/Movies/BoxSet.cs
+++ b/MediaBrowser.Controller/Entities/Movies/BoxSet.cs
@@ -1,11 +1,11 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Querying;
-using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Users;
 
 namespace MediaBrowser.Controller.Entities.Movies
@@ -24,17 +24,20 @@ namespace MediaBrowser.Controller.Entities.Movies
             DisplayOrder = ItemSortBy.PremiereDate;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         protected override bool FilterLinkedChildrenPerUser => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => true;
 
-        public Guid[] LocalTrailerIds { get; set; }
-        public Guid[] RemoteTrailerIds { get; set; }
+        /// <inheritdoc />
+        public IReadOnlyList<Guid> LocalTrailerIds { get; set; }
+
+        /// <inheritdoc />
+        public IReadOnlyList<Guid> RemoteTrailerIds { get; set; }
 
         /// <summary>
         /// Gets or sets the display order.
@@ -61,7 +64,8 @@ namespace MediaBrowser.Controller.Entities.Movies
             {
                 return base.GetNonCachedChildren(directoryService);
             }
-            return new List<BaseItem>();
+
+            return Enumerable.Empty<BaseItem>();
         }
 
         protected override List<BaseItem> LoadChildren()
@@ -75,7 +79,7 @@ namespace MediaBrowser.Controller.Entities.Movies
             return new List<BaseItem>();
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         private bool IsLegacyBoxSet
         {
             get
@@ -94,7 +98,7 @@ namespace MediaBrowser.Controller.Entities.Movies
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsPreSorted => true;
 
         public override bool IsAuthorizedToDelete(User user, List<Folder> allCollectionFolders)
diff --git a/MediaBrowser.Controller/Entities/Movies/Movie.cs b/MediaBrowser.Controller/Entities/Movies/Movie.cs
index 20c5b3521..11dc472b6 100644
--- a/MediaBrowser.Controller/Entities/Movies/Movie.cs
+++ b/MediaBrowser.Controller/Entities/Movies/Movie.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Controller.Providers;
@@ -8,7 +9,6 @@ using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Providers;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities.Movies
 {
@@ -27,8 +27,11 @@ namespace MediaBrowser.Controller.Entities.Movies
             RemoteTrailerIds = Array.Empty<Guid>();
         }
 
-        public Guid[] LocalTrailerIds { get; set; }
-        public Guid[] RemoteTrailerIds { get; set; }
+        /// <inheritdoc />
+        public IReadOnlyList<Guid> LocalTrailerIds { get; set; }
+
+        /// <inheritdoc />
+        public IReadOnlyList<Guid> RemoteTrailerIds { get; set; }
 
         /// <summary>
         /// Gets or sets the name of the TMDB collection.
@@ -36,7 +39,7 @@ namespace MediaBrowser.Controller.Entities.Movies
         /// <value>The name of the TMDB collection.</value>
         public string TmdbCollectionName { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string CollectionName
         {
             get => TmdbCollectionName;
@@ -183,7 +186,7 @@ namespace MediaBrowser.Controller.Entities.Movies
             return list;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool StopRefreshIfLocalMetadataFound => false;
     }
 }
diff --git a/MediaBrowser.Controller/Entities/MusicVideo.cs b/MediaBrowser.Controller/Entities/MusicVideo.cs
index 5bf082b7e..603242063 100644
--- a/MediaBrowser.Controller/Entities/MusicVideo.cs
+++ b/MediaBrowser.Controller/Entities/MusicVideo.cs
@@ -1,24 +1,23 @@
 using System;
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
     public class MusicVideo : Video, IHasArtist, IHasMusicGenres, IHasLookupInfo<MusicVideoInfo>
     {
-        [IgnoreDataMember]
-        public string[] Artists { get; set; }
+        /// <inheritdoc />
+        [JsonIgnore]
+        public IReadOnlyList<string> Artists { get; set; }
 
         public MusicVideo()
         {
             Artists = Array.Empty<string>();
         }
 
-        [IgnoreDataMember]
-        public string[] AllArtists => Artists;
-
         public override UnratedItem GetBlockUnratedType()
         {
             return UnratedItem.Music;
diff --git a/MediaBrowser.Controller/Entities/Person.cs b/MediaBrowser.Controller/Entities/Person.cs
index dd0183489..d9b4b2206 100644
--- a/MediaBrowser.Controller/Entities/Person.cs
+++ b/MediaBrowser.Controller/Entities/Person.cs
@@ -1,9 +1,9 @@
 using System;
 using System.Collections.Generic;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Extensions;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.Serialization;
 using Microsoft.Extensions.Logging;
 
 namespace MediaBrowser.Controller.Entities
@@ -50,7 +50,7 @@ namespace MediaBrowser.Controller.Entities
         /// If the item is a folder, it returns the folder itself
         /// </summary>
         /// <value>The containing folder path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string ContainingFolderPath => Path;
 
         public override bool CanDelete()
@@ -63,13 +63,13 @@ namespace MediaBrowser.Controller.Entities
             return true;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool EnableAlphaNumericSorting => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAncestors => false;
 
         public static string GetPath(string name)
diff --git a/MediaBrowser.Controller/Entities/Photo.cs b/MediaBrowser.Controller/Entities/Photo.cs
index 60c832189..86d62add9 100644
--- a/MediaBrowser.Controller/Entities/Photo.cs
+++ b/MediaBrowser.Controller/Entities/Photo.cs
@@ -1,21 +1,21 @@
+using System.Text.Json.Serialization;
 using MediaBrowser.Model.Drawing;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
     public class Photo : BaseItem
     {
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsLocalMetadata => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string MediaType => Model.Entities.MediaType.Photo;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override Folder LatestItemsIndexContainer => AlbumEntity;
 
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public PhotoAlbum AlbumEntity
         {
             get
diff --git a/MediaBrowser.Controller/Entities/PhotoAlbum.cs b/MediaBrowser.Controller/Entities/PhotoAlbum.cs
index 4cd0c8b66..b86f1ac2a 100644
--- a/MediaBrowser.Controller/Entities/PhotoAlbum.cs
+++ b/MediaBrowser.Controller/Entities/PhotoAlbum.cs
@@ -1,16 +1,16 @@
-using MediaBrowser.Model.Serialization;
+using System.Text.Json.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
     public class PhotoAlbum : Folder
     {
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool AlwaysScanInternalMetadataPath => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => false;
     }
 }
diff --git a/MediaBrowser.Controller/Entities/Studio.cs b/MediaBrowser.Controller/Entities/Studio.cs
index d6da0d48c..068032317 100644
--- a/MediaBrowser.Controller/Entities/Studio.cs
+++ b/MediaBrowser.Controller/Entities/Studio.cs
@@ -1,7 +1,7 @@
 using System;
 using System.Collections.Generic;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Extensions;
-using MediaBrowser.Model.Serialization;
 using Microsoft.Extensions.Logging;
 
 namespace MediaBrowser.Controller.Entities
@@ -28,13 +28,13 @@ namespace MediaBrowser.Controller.Entities
         /// If the item is a folder, it returns the folder itself
         /// </summary>
         /// <value>The containing folder path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string ContainingFolderPath => Path;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsDisplayedAsFolder => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAncestors => false;
 
         public override double GetDefaultPrimaryImageAspectRatio()
@@ -62,7 +62,7 @@ namespace MediaBrowser.Controller.Entities
             return LibraryManager.GetItemList(query);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
 
         public static string GetPath(string name)
diff --git a/MediaBrowser.Controller/Entities/TV/Episode.cs b/MediaBrowser.Controller/Entities/TV/Episode.cs
index fb29c07b0..49229fa4b 100644
--- a/MediaBrowser.Controller/Entities/TV/Episode.cs
+++ b/MediaBrowser.Controller/Entities/TV/Episode.cs
@@ -2,11 +2,11 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.IO;
-using MediaBrowser.Model.Serialization;
 using Microsoft.Extensions.Logging;
 
 namespace MediaBrowser.Controller.Entities.TV
@@ -23,8 +23,11 @@ namespace MediaBrowser.Controller.Entities.TV
             RemoteTrailerIds = Array.Empty<Guid>();
         }
 
-        public Guid[] LocalTrailerIds { get; set; }
-        public Guid[] RemoteTrailerIds { get; set; }
+        /// <inheritdoc />
+        public IReadOnlyList<Guid> LocalTrailerIds { get; set; }
+
+        /// <inheritdoc />
+        public IReadOnlyList<Guid> RemoteTrailerIds { get; set; }
 
         /// <summary>
         /// Gets the season in which it aired.
@@ -46,25 +49,25 @@ namespace MediaBrowser.Controller.Entities.TV
             return series == null ? SeriesName : series.SortName;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         protected override bool SupportsOwnedItems => IsStacked || MediaSourceCount > 1;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public int? AiredSeasonNumber => AirsAfterSeasonNumber ?? AirsBeforeSeasonNumber ?? ParentIndexNumber;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override Folder LatestItemsIndexContainer => Series;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override Guid DisplayParentId => SeasonId;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         protected override bool EnableDefaultVideoUserDataKeys => false;
 
         public override double GetDefaultPrimaryImageAspectRatio()
@@ -101,7 +104,7 @@ namespace MediaBrowser.Controller.Entities.TV
         /// This Episode's Series Instance
         /// </summary>
         /// <value>The series.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Series Series
         {
             get
@@ -115,7 +118,7 @@ namespace MediaBrowser.Controller.Entities.TV
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Season Season
         {
             get
@@ -129,16 +132,16 @@ namespace MediaBrowser.Controller.Entities.TV
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsInSeasonFolder => FindParent<Season>() != null;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SeriesPresentationUniqueKey { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SeriesName { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SeasonName { get; set; }
 
         public string FindSeriesPresentationUniqueKey()
@@ -221,7 +224,7 @@ namespace MediaBrowser.Controller.Entities.TV
             return false;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsRemoteImageDownloading
         {
             get
@@ -235,12 +238,12 @@ namespace MediaBrowser.Controller.Entities.TV
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsMissingEpisode => LocationType == LocationType.Virtual;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid SeasonId { get; set; }
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid SeriesId { get; set; }
 
         public Guid FindSeriesId()
diff --git a/MediaBrowser.Controller/Entities/TV/Season.cs b/MediaBrowser.Controller/Entities/TV/Season.cs
index 5d7c260d1..9c8a469e2 100644
--- a/MediaBrowser.Controller/Entities/TV/Season.cs
+++ b/MediaBrowser.Controller/Entities/TV/Season.cs
@@ -1,11 +1,11 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Querying;
-using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Users;
 
 namespace MediaBrowser.Controller.Entities.TV
@@ -15,22 +15,22 @@ namespace MediaBrowser.Controller.Entities.TV
     /// </summary>
     public class Season : Folder, IHasSeries, IHasLookupInfo<SeasonInfo>
     {
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAddingToPlaylist => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsPreSorted => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsDateLastMediaAdded => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override Guid DisplayParentId => SeriesId;
 
         public override double GetDefaultPrimaryImageAspectRatio()
@@ -71,7 +71,7 @@ namespace MediaBrowser.Controller.Entities.TV
         /// This Episode's Series Instance
         /// </summary>
         /// <value>The series.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Series Series
         {
             get
@@ -85,7 +85,7 @@ namespace MediaBrowser.Controller.Entities.TV
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SeriesPath
         {
             get
@@ -179,13 +179,13 @@ namespace MediaBrowser.Controller.Entities.TV
             return UnratedItem.Series;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SeriesPresentationUniqueKey { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string SeriesName { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Guid SeriesId { get; set; }
 
         public string FindSeriesPresentationUniqueKey()
diff --git a/MediaBrowser.Controller/Entities/TV/Series.cs b/MediaBrowser.Controller/Entities/TV/Series.cs
index eae834f6f..76cb9a651 100644
--- a/MediaBrowser.Controller/Entities/TV/Series.cs
+++ b/MediaBrowser.Controller/Entities/TV/Series.cs
@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Controller.Dto;
@@ -9,7 +11,6 @@ using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Providers;
 using MediaBrowser.Model.Querying;
-using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Users;
 
 namespace MediaBrowser.Controller.Entities.TV
@@ -30,23 +31,26 @@ namespace MediaBrowser.Controller.Entities.TV
         public DayOfWeek[] AirDays { get; set; }
         public string AirTime { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAddingToPlaylist => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsPreSorted => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsDateLastMediaAdded => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => true;
 
-        public Guid[] LocalTrailerIds { get; set; }
-        public Guid[] RemoteTrailerIds { get; set; }
+        /// <inheritdoc />
+        public IReadOnlyList<Guid> LocalTrailerIds { get; set; }
+
+        /// <inheritdoc />
+        public IReadOnlyList<Guid> RemoteTrailerIds { get; set; }
 
         /// <summary>
         /// airdate, dvd or absolute
@@ -91,7 +95,7 @@ namespace MediaBrowser.Controller.Entities.TV
             }
 
             var folders = LibraryManager.GetCollectionFolders(this)
-                .Select(i => i.Id.ToString("N"))
+                .Select(i => i.Id.ToString("N", CultureInfo.InvariantCulture))
                 .ToArray();
 
             if (folders.Length == 0)
@@ -500,7 +504,7 @@ namespace MediaBrowser.Controller.Entities.TV
             return list;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool StopRefreshIfLocalMetadataFound => false;
     }
 }
diff --git a/MediaBrowser.Controller/Entities/Trailer.cs b/MediaBrowser.Controller/Entities/Trailer.cs
index 5bf22d7bc..0b8be90cd 100644
--- a/MediaBrowser.Controller/Entities/Trailer.cs
+++ b/MediaBrowser.Controller/Entities/Trailer.cs
@@ -1,10 +1,10 @@
 using System;
 using System.Collections.Generic;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Providers;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
@@ -93,7 +93,7 @@ namespace MediaBrowser.Controller.Entities
             return list;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool StopRefreshIfLocalMetadataFound => false;
     }
 }
diff --git a/MediaBrowser.Controller/Entities/User.cs b/MediaBrowser.Controller/Entities/User.cs
index 9952ba418..c70ecccf1 100644
--- a/MediaBrowser.Controller/Entities/User.cs
+++ b/MediaBrowser.Controller/Entities/User.cs
@@ -1,11 +1,12 @@
 using System;
+using System.Globalization;
 using System.IO;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
-using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Users;
 
 namespace MediaBrowser.Controller.Entities
@@ -16,13 +17,6 @@ namespace MediaBrowser.Controller.Entities
     public class User : BaseItem
     {
         public static IUserManager UserManager { get; set; }
-        public static IXmlSerializer XmlSerializer { get; set; }
-
-        /// <summary>
-        /// From now on all user paths will be Id-based.
-        /// This is for backwards compatibility.
-        /// </summary>
-        public bool UsesIdForConfigurationPath { get; set; }
 
         /// <summary>
         /// Gets or sets the password.
@@ -30,9 +24,8 @@ namespace MediaBrowser.Controller.Entities
         /// <value>The password.</value>
         public string Password { get; set; }
         public string EasyPassword { get; set; }
-        public string Salt { get; set; }
 
-        // Strictly to remove IgnoreDataMember
+        // Strictly to remove JsonIgnore
         public override ItemImageInfo[] ImageInfos
         {
             get => base.ImageInfos;
@@ -43,7 +36,7 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the path.
         /// </summary>
         /// <value>The path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string Path
         {
             get => ConfigurationDirectoryPath;
@@ -72,14 +65,14 @@ namespace MediaBrowser.Controller.Entities
         /// If the item is a folder, it returns the folder itself
         /// </summary>
         /// <value>The containing folder path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string ContainingFolderPath => Path;
 
         /// <summary>
         /// Gets the root folder.
         /// </summary>
         /// <value>The root folder.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public Folder RootFolder => LibraryManager.GetUserRootFolder();
 
         /// <summary>
@@ -95,7 +88,7 @@ namespace MediaBrowser.Controller.Entities
 
         private volatile UserConfiguration _config;
         private readonly object _configSyncLock = new object();
-        [IgnoreDataMember]
+        [JsonIgnore]
         public UserConfiguration Configuration
         {
             get
@@ -118,7 +111,7 @@ namespace MediaBrowser.Controller.Entities
 
         private volatile UserPolicy _policy;
         private readonly object _policySyncLock = new object();
-        [IgnoreDataMember]
+        [JsonIgnore]
         public UserPolicy Policy
         {
             get
@@ -147,46 +140,23 @@ namespace MediaBrowser.Controller.Entities
         /// <exception cref="ArgumentNullException"></exception>
         public Task Rename(string newName)
         {
-            if (string.IsNullOrEmpty(newName))
-            {
-                throw new ArgumentNullException(nameof(newName));
-            }
-
-            // If only the casing is changing, leave the file system alone
-            if (!UsesIdForConfigurationPath && !string.Equals(newName, Name, StringComparison.OrdinalIgnoreCase))
+            if (string.IsNullOrWhiteSpace(newName))
             {
-                UsesIdForConfigurationPath = true;
-
-                // Move configuration
-                var newConfigDirectory = GetConfigurationDirectoryPath(newName);
-                var oldConfigurationDirectory = ConfigurationDirectoryPath;
-
-                // Exceptions will be thrown if these paths already exist
-                if (Directory.Exists(newConfigDirectory))
-                {
-                    Directory.Delete(newConfigDirectory, true);
-                }
-
-                if (Directory.Exists(oldConfigurationDirectory))
-                {
-                    Directory.Move(oldConfigurationDirectory, newConfigDirectory);
-                }
-                else
-                {
-                    Directory.CreateDirectory(newConfigDirectory);
-                }
+                throw new ArgumentException("Username can't be empty", nameof(newName));
             }
 
             Name = newName;
 
-            return RefreshMetadata(new MetadataRefreshOptions(new DirectoryService(Logger, FileSystem))
-            {
-                ReplaceAllMetadata = true,
-                ImageRefreshMode = MetadataRefreshMode.FullRefresh,
-                MetadataRefreshMode = MetadataRefreshMode.FullRefresh,
-                ForceSave = true
+            return RefreshMetadata(
+                new MetadataRefreshOptions(new DirectoryService(Logger, FileSystem))
+                {
+                    ReplaceAllMetadata = true,
+                    ImageRefreshMode = MetadataRefreshMode.FullRefresh,
+                    MetadataRefreshMode = MetadataRefreshMode.FullRefresh,
+                    ForceSave = true
 
-            }, CancellationToken.None);
+                },
+                CancellationToken.None);
         }
 
         public override void UpdateToRepository(ItemUpdateType updateReason, CancellationToken cancellationToken)
@@ -198,7 +168,7 @@ namespace MediaBrowser.Controller.Entities
         /// Gets the path to the user's configuration directory
         /// </summary>
         /// <value>The configuration directory path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string ConfigurationDirectoryPath => GetConfigurationDirectoryPath(Name);
 
         public override double GetDefaultPrimaryImageAspectRatio()
@@ -215,22 +185,9 @@ namespace MediaBrowser.Controller.Entities
         {
             var parentPath = ConfigurationManager.ApplicationPaths.UserConfigurationDirectoryPath;
 
-            // Legacy
-            if (!UsesIdForConfigurationPath)
-            {
-                if (string.IsNullOrEmpty(username))
-                {
-                    throw new ArgumentNullException(nameof(username));
-                }
-
-                var safeFolderName = FileSystem.GetValidFilename(username);
-
-                return System.IO.Path.Combine(ConfigurationManager.ApplicationPaths.UserConfigurationDirectoryPath, safeFolderName);
-            }
-
             // TODO: Remove idPath and just use usernamePath for future releases
             var usernamePath = System.IO.Path.Combine(parentPath, username);
-            var idPath = System.IO.Path.Combine(parentPath, Id.ToString("N"));
+            var idPath = System.IO.Path.Combine(parentPath, Id.ToString("N", CultureInfo.InvariantCulture));
             if (!Directory.Exists(usernamePath) && Directory.Exists(idPath))
             {
                 Directory.Move(idPath, usernamePath);
@@ -295,7 +252,7 @@ namespace MediaBrowser.Controller.Entities
             return false;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
 
         public long InternalId { get; set; }
diff --git a/MediaBrowser.Controller/Entities/UserItemData.cs b/MediaBrowser.Controller/Entities/UserItemData.cs
index f7136bdf2..ab425ee0f 100644
--- a/MediaBrowser.Controller/Entities/UserItemData.cs
+++ b/MediaBrowser.Controller/Entities/UserItemData.cs
@@ -1,5 +1,5 @@
 using System;
-using MediaBrowser.Model.Serialization;
+using System.Text.Json.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
@@ -93,7 +93,7 @@ namespace MediaBrowser.Controller.Entities
         /// This should never be serialized.
         /// </summary>
         /// <value><c>null</c> if [likes] contains no value, <c>true</c> if [likes]; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool? Likes
         {
             get
diff --git a/MediaBrowser.Controller/Entities/UserRootFolder.cs b/MediaBrowser.Controller/Entities/UserRootFolder.cs
index 7fe8df8af..7fcf48a48 100644
--- a/MediaBrowser.Controller/Entities/UserRootFolder.cs
+++ b/MediaBrowser.Controller/Entities/UserRootFolder.cs
@@ -1,12 +1,12 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Library;
 using MediaBrowser.Model.Querying;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
@@ -33,10 +33,10 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => false;
 
         private void ClearCache()
@@ -75,10 +75,10 @@ namespace MediaBrowser.Controller.Entities
             return GetChildren(user, true).Count;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         protected override bool SupportsShortcutChildren => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsPreSorted => true;
 
         protected override IEnumerable<BaseItem> GetEligibleChildrenForRecursiveChildren(User user)
diff --git a/MediaBrowser.Controller/Entities/UserView.cs b/MediaBrowser.Controller/Entities/UserView.cs
index 4a6d32dce..fd045f0dd 100644
--- a/MediaBrowser.Controller/Entities/UserView.cs
+++ b/MediaBrowser.Controller/Entities/UserView.cs
@@ -1,10 +1,10 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading.Tasks;
 using MediaBrowser.Controller.TV;
 using MediaBrowser.Model.Querying;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
@@ -17,7 +17,7 @@ namespace MediaBrowser.Controller.Entities
 
         public static ITVSeriesManager TVSeriesManager;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string CollectionType => ViewType;
 
         public override IEnumerable<Guid> GetIdsForAncestorQuery()
@@ -40,10 +40,10 @@ namespace MediaBrowser.Controller.Entities
             return list;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => false;
 
         public override int GetChildCount(User user)
@@ -167,7 +167,7 @@ namespace MediaBrowser.Controller.Entities
             return Task.CompletedTask;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
     }
 }
diff --git a/MediaBrowser.Controller/Entities/UserViewBuilder.cs b/MediaBrowser.Controller/Entities/UserViewBuilder.cs
index e483c8f34..454bdc4ae 100644
--- a/MediaBrowser.Controller/Entities/UserViewBuilder.cs
+++ b/MediaBrowser.Controller/Entities/UserViewBuilder.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities.Movies;
@@ -987,7 +988,7 @@ namespace MediaBrowser.Controller.Entities
 
         private UserView GetUserViewWithName(string name, string type, string sortName, BaseItem parent)
         {
-            return _userViewManager.GetUserSubView(parent.Id, parent.Id.ToString("N"), type, sortName);
+            return _userViewManager.GetUserSubView(parent.Id, parent.Id.ToString("N", CultureInfo.InvariantCulture), type, sortName);
         }
 
         private UserView GetUserView(string type, string localizationKey, string sortName, BaseItem parent)
diff --git a/MediaBrowser.Controller/Entities/Video.cs b/MediaBrowser.Controller/Entities/Video.cs
index 8379dcc09..60906bdb0 100644
--- a/MediaBrowser.Controller/Entities/Video.cs
+++ b/MediaBrowser.Controller/Entities/Video.cs
@@ -2,6 +2,7 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Controller.Library;
@@ -13,7 +14,6 @@ using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.IO;
 using MediaBrowser.Model.MediaInfo;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Entities
 {
@@ -25,23 +25,23 @@ namespace MediaBrowser.Controller.Entities
         ISupportsPlaceHolders,
         IHasMediaSources
     {
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string PrimaryVersionId { get; set; }
 
         public string[] AdditionalParts { get; set; }
         public string[] LocalAlternateVersions { get; set; }
         public LinkedChild[] LinkedAlternateVersions { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPositionTicksResume
         {
             get
@@ -90,7 +90,7 @@ namespace MediaBrowser.Controller.Entities
             return base.CreatePresentationUniqueKey();
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsThemeMedia => true;
 
         /// <summary>
@@ -180,10 +180,10 @@ namespace MediaBrowser.Controller.Entities
             return IsFileProtocol;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAddingToPlaylist => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public int MediaSourceCount
         {
             get
@@ -200,10 +200,10 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsStacked => AdditionalParts.Length > 0;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool HasLocalAlternateVersions => LocalAlternateVersions.Length > 0;
 
         public IEnumerable<Guid> GetAdditionalPartIds()
@@ -218,7 +218,7 @@ namespace MediaBrowser.Controller.Entities
 
         public static ILiveTvManager LiveTvManager { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override SourceType SourceType
         {
             get
@@ -247,7 +247,7 @@ namespace MediaBrowser.Controller.Entities
             return base.CanDelete();
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsCompleteMedia
         {
             get
@@ -261,7 +261,7 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         protected virtual bool EnableDefaultVideoUserDataKeys => true;
 
         public override List<string> GetUserDataKeys()
@@ -338,7 +338,7 @@ namespace MediaBrowser.Controller.Entities
                 .OrderBy(i => i.SortName);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string ContainingFolderPath
         {
             get
@@ -360,7 +360,7 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string FileNameWithoutExtension
         {
             get
@@ -432,14 +432,14 @@ namespace MediaBrowser.Controller.Entities
         /// Gets a value indicating whether [is3 D].
         /// </summary>
         /// <value><c>true</c> if [is3 D]; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool Is3D => Video3DFormat.HasValue;
 
         /// <summary>
         /// Gets the type of the media.
         /// </summary>
         /// <value>The type of the media.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string MediaType => Model.Entities.MediaType.Video;
 
         protected override async Task<bool> RefreshedOwnedItems(MetadataRefreshOptions options, List<FileSystemMetadata> fileSystemChildren, CancellationToken cancellationToken)
diff --git a/MediaBrowser.Controller/Entities/Year.cs b/MediaBrowser.Controller/Entities/Year.cs
index 13e82fada..a01ef5c31 100644
--- a/MediaBrowser.Controller/Entities/Year.cs
+++ b/MediaBrowser.Controller/Entities/Year.cs
@@ -1,7 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Globalization;
-using MediaBrowser.Model.Serialization;
+using System.Text.Json.Serialization;
 using Microsoft.Extensions.Logging;
 
 namespace MediaBrowser.Controller.Entities
@@ -24,7 +24,7 @@ namespace MediaBrowser.Controller.Entities
         /// If the item is a folder, it returns the folder itself
         /// </summary>
         /// <value>The containing folder path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string ContainingFolderPath => Path;
 
         public override double GetDefaultPrimaryImageAspectRatio()
@@ -35,7 +35,7 @@ namespace MediaBrowser.Controller.Entities
             return value;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAncestors => false;
 
         public override bool CanDelete()
@@ -72,7 +72,7 @@ namespace MediaBrowser.Controller.Entities
             return null;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople => false;
 
         public static string GetPath(string name)
diff --git a/MediaBrowser.Controller/IServerApplicationHost.cs b/MediaBrowser.Controller/IServerApplicationHost.cs
index 3f8cc0b83..61b2c15ae 100644
--- a/MediaBrowser.Controller/IServerApplicationHost.cs
+++ b/MediaBrowser.Controller/IServerApplicationHost.cs
@@ -83,7 +83,7 @@ namespace MediaBrowser.Controller
 
         void EnableLoopback(string appName);
 
-        WakeOnLanInfo[] GetWakeOnLanInfo();
+        IEnumerable<WakeOnLanInfo> GetWakeOnLanInfo();
 
         string ExpandVirtualPath(string path);
         string ReverseVirtualPath(string path);
diff --git a/MediaBrowser.Controller/Library/IUserManager.cs b/MediaBrowser.Controller/Library/IUserManager.cs
index 7f7370893..bbedc0442 100644
--- a/MediaBrowser.Controller/Library/IUserManager.cs
+++ b/MediaBrowser.Controller/Library/IUserManager.cs
@@ -23,6 +23,12 @@ namespace MediaBrowser.Controller.Library
         IEnumerable<User> Users { get; }
 
         /// <summary>
+        /// Gets the user ids.
+        /// </summary>
+        /// <value>The users ids.</value>
+        IEnumerable<Guid> UsersIds { get; }
+
+        /// <summary>
         /// Occurs when [user updated].
         /// </summary>
         event EventHandler<GenericEventArgs<User>> UserUpdated;
@@ -92,7 +98,7 @@ namespace MediaBrowser.Controller.Library
         /// <returns>User.</returns>
         /// <exception cref="ArgumentNullException">name</exception>
         /// <exception cref="ArgumentException"></exception>
-        Task<User> CreateUser(string name);
+        User CreateUser(string name);
 
         /// <summary>
         /// Deletes the user.
@@ -101,7 +107,7 @@ namespace MediaBrowser.Controller.Library
         /// <returns>Task.</returns>
         /// <exception cref="ArgumentNullException">user</exception>
         /// <exception cref="ArgumentException"></exception>
-        Task DeleteUser(User user);
+        void DeleteUser(User user);
 
         /// <summary>
         /// Resets the password.
diff --git a/MediaBrowser.Controller/LiveTv/IListingsProvider.cs b/MediaBrowser.Controller/LiveTv/IListingsProvider.cs
index c719ad81c..2ea0a748e 100644
--- a/MediaBrowser.Controller/LiveTv/IListingsProvider.cs
+++ b/MediaBrowser.Controller/LiveTv/IListingsProvider.cs
@@ -10,10 +10,15 @@ namespace MediaBrowser.Controller.LiveTv
     public interface IListingsProvider
     {
         string Name { get; }
+
         string Type { get; }
+
         Task<IEnumerable<ProgramInfo>> GetProgramsAsync(ListingsProviderInfo info, string channelId, DateTime startDateUtc, DateTime endDateUtc, CancellationToken cancellationToken);
+
         Task Validate(ListingsProviderInfo info, bool validateLogin, bool validateListings);
+
         Task<List<NameIdPair>> GetLineups(ListingsProviderInfo info, string country, string location);
+
         Task<List<ChannelInfo>> GetChannels(ListingsProviderInfo info, CancellationToken cancellationToken);
     }
 }
diff --git a/MediaBrowser.Controller/LiveTv/ILiveTvManager.cs b/MediaBrowser.Controller/LiveTv/ILiveTvManager.cs
index f99df6c7c..e02c387e4 100644
--- a/MediaBrowser.Controller/LiveTv/ILiveTvManager.cs
+++ b/MediaBrowser.Controller/LiveTv/ILiveTvManager.cs
@@ -221,7 +221,7 @@ namespace MediaBrowser.Controller.LiveTv
         /// <param name="fields">The fields.</param>
         /// <param name="user">The user.</param>
         /// <returns>Task.</returns>
-        Task AddInfoToProgramDto(List<Tuple<BaseItem, BaseItemDto>> programs, ItemFields[] fields, User user = null);
+        Task AddInfoToProgramDto(IReadOnlyCollection<(BaseItem, BaseItemDto)> programs, ItemFields[] fields, User user = null);
 
         /// <summary>
         /// Saves the tuner host.
@@ -258,7 +258,7 @@ namespace MediaBrowser.Controller.LiveTv
         /// <param name="items">The items.</param>
         /// <param name="options">The options.</param>
         /// <param name="user">The user.</param>
-        void AddChannelInfo(List<Tuple<BaseItemDto, LiveTvChannel>> items, DtoOptions options, User user);
+        void AddChannelInfo(IReadOnlyCollection<(BaseItemDto, LiveTvChannel)> items, DtoOptions options, User user);
 
         Task<List<ChannelInfo>> GetChannelsForListingsProvider(string id, CancellationToken cancellationToken);
         Task<List<ChannelInfo>> GetChannelsFromListingsProviderData(string id, CancellationToken cancellationToken);
diff --git a/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs b/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs
index 55f47aae9..60391bb83 100644
--- a/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs
+++ b/MediaBrowser.Controller/LiveTv/LiveTvChannel.cs
@@ -2,13 +2,13 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
+using System.Text.Json.Serialization;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.LiveTv;
 using MediaBrowser.Model.MediaInfo;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.LiveTv
 {
@@ -31,13 +31,13 @@ namespace MediaBrowser.Controller.LiveTv
             return UnratedItem.LiveTvChannel;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPositionTicksResume => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override SourceType SourceType => SourceType.LiveTV;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool EnableRememberingTrackSelections => false;
 
         /// <summary>
@@ -52,7 +52,7 @@ namespace MediaBrowser.Controller.LiveTv
         /// <value>The type of the channel.</value>
         public ChannelType ChannelType { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override LocationType LocationType => LocationType.Remote;
 
         protected override string CreateSortName()
@@ -70,7 +70,7 @@ namespace MediaBrowser.Controller.LiveTv
             return (Number ?? string.Empty) + "-" + (Name ?? string.Empty);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string MediaType => ChannelType == ChannelType.Radio ? Model.Entities.MediaType.Audio : Model.Entities.MediaType.Video;
 
         public override string GetClientTypeName()
@@ -89,7 +89,7 @@ namespace MediaBrowser.Controller.LiveTv
 
             var info = new MediaSourceInfo
             {
-                Id = Id.ToString("N"),
+                Id = Id.ToString("N", CultureInfo.InvariantCulture),
                 Protocol = PathProtocol ?? MediaProtocol.File,
                 MediaStreams = new List<MediaStream>(),
                 Name = Name,
@@ -111,7 +111,7 @@ namespace MediaBrowser.Controller.LiveTv
 
         protected override string GetInternalMetadataPath(string basePath)
         {
-            return System.IO.Path.Combine(basePath, "livetv", Id.ToString("N"), "metadata");
+            return System.IO.Path.Combine(basePath, "livetv", Id.ToString("N", CultureInfo.InvariantCulture), "metadata");
         }
 
         public override bool CanDelete()
@@ -119,45 +119,45 @@ namespace MediaBrowser.Controller.LiveTv
             return false;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsMovie { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is sports.
         /// </summary>
         /// <value><c>true</c> if this instance is sports; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsSports { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is series.
         /// </summary>
         /// <value><c>true</c> if this instance is series; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsSeries { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is news.
         /// </summary>
         /// <value><c>true</c> if this instance is news; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsNews { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is kids.
         /// </summary>
         /// <value><c>true</c> if this instance is kids; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsKids => Tags.Contains("Kids", StringComparer.OrdinalIgnoreCase);
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsRepeat { get; set; }
 
         /// <summary>
         /// Gets or sets the episode title.
         /// </summary>
         /// <value>The episode title.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string EpisodeTitle { get; set; }
     }
 }
diff --git a/MediaBrowser.Controller/LiveTv/LiveTvProgram.cs b/MediaBrowser.Controller/LiveTv/LiveTvProgram.cs
index 8bde6a5da..13df85aed 100644
--- a/MediaBrowser.Controller/LiveTv/LiveTvProgram.cs
+++ b/MediaBrowser.Controller/LiveTv/LiveTvProgram.cs
@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
+using System.Text.Json.Serialization;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Providers;
@@ -8,7 +10,6 @@ using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.LiveTv;
 using MediaBrowser.Model.Providers;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.LiveTv
 {
@@ -62,79 +63,79 @@ namespace MediaBrowser.Controller.LiveTv
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override SourceType SourceType => SourceType.LiveTV;
 
         /// <summary>
         /// The start date of the program, in UTC.
         /// </summary>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public DateTime StartDate { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is repeat.
         /// </summary>
         /// <value><c>true</c> if this instance is repeat; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsRepeat { get; set; }
 
         /// <summary>
         /// Gets or sets the episode title.
         /// </summary>
         /// <value>The episode title.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string EpisodeTitle { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public string ShowId { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is movie.
         /// </summary>
         /// <value><c>true</c> if this instance is movie; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsMovie { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is sports.
         /// </summary>
         /// <value><c>true</c> if this instance is sports; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsSports => Tags.Contains("Sports", StringComparer.OrdinalIgnoreCase);
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is series.
         /// </summary>
         /// <value><c>true</c> if this instance is series; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsSeries { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is live.
         /// </summary>
         /// <value><c>true</c> if this instance is live; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsLive => Tags.Contains("Live", StringComparer.OrdinalIgnoreCase);
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is news.
         /// </summary>
         /// <value><c>true</c> if this instance is news; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsNews => Tags.Contains("News", StringComparer.OrdinalIgnoreCase);
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is kids.
         /// </summary>
         /// <value><c>true</c> if this instance is kids; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsKids => Tags.Contains("Kids", StringComparer.OrdinalIgnoreCase);
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is premiere.
         /// </summary>
         /// <value><c>true</c> if this instance is premiere; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsPremiere => Tags.Contains("Premiere", StringComparer.OrdinalIgnoreCase);
 
         /// <summary>
@@ -142,10 +143,10 @@ namespace MediaBrowser.Controller.LiveTv
         /// If the item is a folder, it returns the folder itself
         /// </summary>
         /// <value>The containing folder path.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string ContainingFolderPath => Path;
 
-        //[IgnoreDataMember]
+        //[JsonIgnore]
         //public override string MediaType
         //{
         //    get
@@ -154,7 +155,7 @@ namespace MediaBrowser.Controller.LiveTv
         //    }
         //}
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsAiring
         {
             get
@@ -165,7 +166,7 @@ namespace MediaBrowser.Controller.LiveTv
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool HasAired
         {
             get
@@ -188,7 +189,7 @@ namespace MediaBrowser.Controller.LiveTv
 
         protected override string GetInternalMetadataPath(string basePath)
         {
-            return System.IO.Path.Combine(basePath, "livetv", Id.ToString("N"));
+            return System.IO.Path.Combine(basePath, "livetv", Id.ToString("N", CultureInfo.InvariantCulture));
         }
 
         public override bool CanDelete()
@@ -196,7 +197,7 @@ namespace MediaBrowser.Controller.LiveTv
             return false;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPeople
         {
             get
@@ -211,7 +212,7 @@ namespace MediaBrowser.Controller.LiveTv
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsAncestors => false;
 
         private LiveTvOptions GetConfiguration()
diff --git a/MediaBrowser.Controller/LiveTv/TimerInfo.cs b/MediaBrowser.Controller/LiveTv/TimerInfo.cs
index 2fea6a8cb..46774b2b7 100644
--- a/MediaBrowser.Controller/LiveTv/TimerInfo.cs
+++ b/MediaBrowser.Controller/LiveTv/TimerInfo.cs
@@ -1,8 +1,8 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.Json.Serialization;
 using MediaBrowser.Model.LiveTv;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.LiveTv
 {
@@ -129,10 +129,10 @@ namespace MediaBrowser.Controller.LiveTv
         /// Gets or sets a value indicating whether this instance is live.
         /// </summary>
         /// <value><c>true</c> if this instance is live; otherwise, <c>false</c>.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsLive => Tags.Contains("Live", StringComparer.OrdinalIgnoreCase);
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsPremiere => Tags.Contains("Premiere", StringComparer.OrdinalIgnoreCase);
 
         public int? ProductionYear { get; set; }
diff --git a/MediaBrowser.Controller/MediaBrowser.Controller.csproj b/MediaBrowser.Controller/MediaBrowser.Controller.csproj
index 01893f1b5..c6bca2518 100644
--- a/MediaBrowser.Controller/MediaBrowser.Controller.csproj
+++ b/MediaBrowser.Controller/MediaBrowser.Controller.csproj
@@ -19,6 +19,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
 
 </Project>
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index b9ccc93ef..d896a7aef 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Text;
 using System.Threading;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Model.Configuration;
@@ -22,8 +23,17 @@ namespace MediaBrowser.Controller.MediaEncoding
         private readonly IMediaEncoder _mediaEncoder;
         private readonly IFileSystem _fileSystem;
         private readonly ISubtitleEncoder _subtitleEncoder;
-        // private readonly IApplicationPaths _appPaths;
-        // private readonly IAssemblyInfo _assemblyInfo;
+
+        private static readonly string[] _videoProfiles = new[]
+        {
+            "ConstrainedBaseline",
+            "Baseline",
+            "Extended",
+            "Main",
+            "High",
+            "ProgressiveHigh",
+            "ConstrainedHigh"
+        };
 
         public EncodingHelper(IMediaEncoder mediaEncoder, IFileSystem fileSystem, ISubtitleEncoder subtitleEncoder)
         {
@@ -33,9 +43,13 @@ namespace MediaBrowser.Controller.MediaEncoding
         }
 
         public string GetH264Encoder(EncodingJobInfo state, EncodingOptions encodingOptions)
-        {
-            var defaultEncoder = "libx264";
+            => GetH264OrH265Encoder("libx264", "h264", state, encodingOptions);
+
+        public string GetH265Encoder(EncodingJobInfo state, EncodingOptions encodingOptions)
+            => GetH264OrH265Encoder("libx265", "hevc", state, encodingOptions);
 
+        private string GetH264OrH265Encoder(string defaultEncoder, string hwEncoder, EncodingJobInfo state, EncodingOptions encodingOptions)
+        {
             // Only use alternative encoders for video files.
             // When using concat with folder rips, if the mfx session fails to initialize, ffmpeg will be stuck retrying and will not exit gracefully
             // Since transcoding of folder rips is expiremental anyway, it's not worth adding additional variables such as this.
@@ -45,35 +59,30 @@ namespace MediaBrowser.Controller.MediaEncoding
 
                 var codecMap = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
                 {
-                    {"qsv",          "h264_qsv"},
-                    {"h264_qsv",     "h264_qsv"},
-                    {"nvenc",        "h264_nvenc"},
-                    {"amf",          "h264_amf"},
-                    {"omx",          "h264_omx"},
-                    {"h264_v4l2m2m", "h264_v4l2m2m"},
-                    {"mediacodec",   "h264_mediacodec"},
-                    {"vaapi",        "h264_vaapi"}
+                    {"qsv",                  hwEncoder + "_qsv"},
+                    {hwEncoder + "_qsv",     hwEncoder + "_qsv"},
+                    {"nvenc",                hwEncoder + "_nvenc"},
+                    {"amf",                  hwEncoder + "_amf"},
+                    {"omx",                  hwEncoder + "_omx"},
+                    {hwEncoder + "_v4l2m2m", hwEncoder + "_v4l2m2m"},
+                    {"mediacodec",           hwEncoder + "_mediacodec"},
+                    {"vaapi",                hwEncoder + "_vaapi"}
                 };
 
                 if (!string.IsNullOrEmpty(hwType)
-                    && encodingOptions.EnableHardwareEncoding && codecMap.ContainsKey(hwType))
+                    && encodingOptions.EnableHardwareEncoding
+                    && codecMap.ContainsKey(hwType)
+                    && CheckVaapi(state, hwType, encodingOptions))
                 {
-                    if (CheckVaapi(state, hwType, encodingOptions))
-                    {
-                        var preferredEncoder = codecMap[hwType];
+                    var preferredEncoder = codecMap[hwType];
 
-                        if (_mediaEncoder.SupportsEncoder(preferredEncoder))
-                        {
-                            return preferredEncoder;
-                        }
+                    if (_mediaEncoder.SupportsEncoder(preferredEncoder))
+                    {
+                        return preferredEncoder;
                     }
                 }
-
             }
 
-            // Avoid performing a second attempt when the first one
-            // hasn't tried hardware encoding anyway.
-            encodingOptions.EnableHardwareEncoding = false;
             return defaultEncoder;
         }
 
@@ -98,15 +107,13 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             var videoStream = state.VideoStream;
 
-            if (videoStream != null)
+            // vaapi will throw an error with this input
+            // [vaapi @ 0x7faed8000960] No VAAPI support for codec mpeg4 profile -99.
+            if (string.Equals(videoStream?.Codec, "mpeg4", StringComparison.OrdinalIgnoreCase))
             {
-                // vaapi will throw an error with this input
-                // [vaapi @ 0x7faed8000960] No VAAPI support for codec mpeg4 profile -99.
-                if (string.Equals(videoStream.Codec, "mpeg4", StringComparison.OrdinalIgnoreCase))
-                {
-                    return false;
-                }
+                return false;
             }
+
             return true;
         }
 
@@ -119,18 +126,27 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (!string.IsNullOrEmpty(codec))
             {
+                if (string.Equals(codec, "h265", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(codec, "hevc", StringComparison.OrdinalIgnoreCase))
+                {
+                    return GetH265Encoder(state, encodingOptions);
+                }
+
                 if (string.Equals(codec, "h264", StringComparison.OrdinalIgnoreCase))
                 {
                     return GetH264Encoder(state, encodingOptions);
                 }
+
                 if (string.Equals(codec, "vpx", StringComparison.OrdinalIgnoreCase))
                 {
                     return "libvpx";
                 }
+
                 if (string.Equals(codec, "wmv", StringComparison.OrdinalIgnoreCase))
                 {
                     return "wmv2";
                 }
+
                 if (string.Equals(codec, "theora", StringComparison.OrdinalIgnoreCase))
                 {
                     return "libtheora";
@@ -149,11 +165,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// <returns>System.String.</returns>
         public string GetUserAgentParam(EncodingJobInfo state)
         {
-            string useragent = null;
-
-            state.RemoteHttpHeaders.TryGetValue("User-Agent", out useragent);
-
-            if (!string.IsNullOrEmpty(useragent))
+            if (state.RemoteHttpHeaders.TryGetValue("User-Agent", out string useragent))
             {
                 return "-user_agent \"" + useragent + "\"";
             }
@@ -180,50 +192,62 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 return null;
             }
+
             if (string.Equals(container, "wmv", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "mts", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "vob", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "mpg", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "mpeg", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "rec", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "dvr-ms", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "ogm", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "divx", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "tp", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "rmvb", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(container, "rtp", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
@@ -251,10 +275,12 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 return null;
             }
+
             if (string.Equals(codec, "aac_latm", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
             }
+
             if (string.Equals(codec, "eac3", StringComparison.OrdinalIgnoreCase))
             {
                 return null;
@@ -279,30 +305,37 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 return "mp3";
             }
+
             if (string.Equals(ext, ".aac", StringComparison.OrdinalIgnoreCase))
             {
                 return "aac";
             }
+
             if (string.Equals(ext, ".wma", StringComparison.OrdinalIgnoreCase))
             {
                 return "wma";
             }
+
             if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase))
             {
                 return "vorbis";
             }
+
             if (string.Equals(ext, ".oga", StringComparison.OrdinalIgnoreCase))
             {
                 return "vorbis";
             }
+
             if (string.Equals(ext, ".ogv", StringComparison.OrdinalIgnoreCase))
             {
                 return "vorbis";
             }
+
             if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
             {
                 return "vorbis";
             }
+
             if (string.Equals(ext, ".webma", StringComparison.OrdinalIgnoreCase))
             {
                 return "vorbis";
@@ -324,14 +357,17 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 return "wmv";
             }
+
             if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
             {
                 return "vpx";
             }
+
             if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase) || string.Equals(ext, ".ogv", StringComparison.OrdinalIgnoreCase))
             {
                 return "theora";
             }
+
             if (string.Equals(ext, ".m3u8", StringComparison.OrdinalIgnoreCase) || string.Equals(ext, ".ts", StringComparison.OrdinalIgnoreCase))
             {
                 return "h264";
@@ -342,19 +378,9 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         public int GetVideoProfileScore(string profile)
         {
-            var list = new[]
-            {
-                "ConstrainedBaseline",
-                "Baseline",
-                "Extended",
-                "Main",
-                "High",
-                "ProgressiveHigh",
-                "ConstrainedHigh"
-            };
-
             // strip spaces because they may be stripped out on the query string
-            return Array.FindIndex(list, t => string.Equals(t, profile.Replace(" ", ""), StringComparison.OrdinalIgnoreCase));
+            profile = profile.Replace(" ", "");
+            return Array.FindIndex(_videoProfiles, x => string.Equals(x, profile, StringComparison.OrdinalIgnoreCase));
         }
 
         public string GetInputPathArgument(EncodingJobInfo state)
@@ -362,14 +388,19 @@ namespace MediaBrowser.Controller.MediaEncoding
             var protocol = state.InputProtocol;
             var mediaPath = state.MediaPath ?? string.Empty;
 
-            var inputPath = new[] { mediaPath };
-
-            if (state.IsInputVideo)
+            string[] inputPath;
+            if (state.IsInputVideo
+                && !(state.VideoType == VideoType.Iso && state.IsoMount == null))
             {
-                if (!(state.VideoType == VideoType.Iso && state.IsoMount == null))
-                {
-                    inputPath = MediaEncoderHelpers.GetInputArgument(_fileSystem, mediaPath, state.InputProtocol, state.IsoMount, state.PlayableStreamFileNames);
-                }
+                inputPath = MediaEncoderHelpers.GetInputArgument(
+                    _fileSystem,
+                    mediaPath,
+                    state.IsoMount,
+                    state.PlayableStreamFileNames);
+            }
+            else
+            {
+                inputPath = new[] { mediaPath };
             }
 
             return _mediaEncoder.GetInputArgument(inputPath, protocol);
@@ -388,18 +419,22 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 return "aac -strict experimental";
             }
+
             if (string.Equals(codec, "mp3", StringComparison.OrdinalIgnoreCase))
             {
                 return "libmp3lame";
             }
+
             if (string.Equals(codec, "vorbis", StringComparison.OrdinalIgnoreCase))
             {
                 return "libvorbis";
             }
+
             if (string.Equals(codec, "wma", StringComparison.OrdinalIgnoreCase))
             {
                 return "wmav2";
             }
+
             if (string.Equals(codec, "opus", StringComparison.OrdinalIgnoreCase))
             {
                 return "libopus";
@@ -413,54 +448,59 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// </summary>
         public string GetInputArgument(EncodingJobInfo state, EncodingOptions encodingOptions)
         {
-            var request = state.BaseRequest;
+            var arg = new StringBuilder();
 
-            var arg = string.Format("-i {0}", GetInputPathArgument(state));
-
-            if (state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
+            if (state.IsVideoRequest
+                && string.Equals(encodingOptions.HardwareAccelerationType, "vaapi", StringComparison.OrdinalIgnoreCase))
             {
-                if (state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream)
+                var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+                var hwOutputFormat = "vaapi";
+
+                if (hasGraphicalSubs)
                 {
-                    if (state.VideoStream != null && state.VideoStream.Width.HasValue)
-                    {
-                        // This is hacky but not sure how to get the exact subtitle resolution
-                        int height = Convert.ToInt32((double)state.VideoStream.Width.Value / 16.0 * 9.0);
+                    hwOutputFormat = "yuv420p";
+                }
 
-                        arg += string.Format(" -canvas_size {0}:{1}", state.VideoStream.Width.Value.ToString(CultureInfo.InvariantCulture), height.ToString(CultureInfo.InvariantCulture));
-                    }
+                arg.Append("-hwaccel vaapi -hwaccel_output_format ")
+                    .Append(hwOutputFormat)
+                    .Append(" -vaapi_device ")
+                    .Append(encodingOptions.VaapiDevice)
+                    .Append(' ');
+            }
 
-                    var subtitlePath = state.SubtitleStream.Path;
+            arg.Append("-i ")
+                .Append(GetInputPathArgument(state));
 
-                    if (string.Equals(Path.GetExtension(subtitlePath), ".sub", StringComparison.OrdinalIgnoreCase))
-                    {
-                        var idxFile = Path.ChangeExtension(subtitlePath, ".idx");
-                        if (File.Exists(idxFile))
-                        {
-                            subtitlePath = idxFile;
-                        }
-                    }
+            if (state.SubtitleStream != null
+                && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode
+                && state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream)
+            {
+                if (state.VideoStream != null && state.VideoStream.Width.HasValue)
+                {
+                    // This is hacky but not sure how to get the exact subtitle resolution
+                    int height = Convert.ToInt32(state.VideoStream.Width.Value / 16.0 * 9.0);
 
-                    arg += " -i \"" + subtitlePath + "\"";
+                    arg.Append(" -canvas_size ")
+                        .Append(state.VideoStream.Width.Value.ToString(CultureInfo.InvariantCulture))
+                        .Append(':')
+                        .Append(height.ToString(CultureInfo.InvariantCulture));
                 }
-            }
 
-            if (state.IsVideoRequest)
-            {
-                if (GetVideoEncoder(state, encodingOptions).IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1)
-                {
-                    var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
-                    var hwOutputFormat = "vaapi";
+                var subtitlePath = state.SubtitleStream.Path;
 
-                    if (hasGraphicalSubs)
+                if (string.Equals(Path.GetExtension(subtitlePath), ".sub", StringComparison.OrdinalIgnoreCase))
+                {
+                    var idxFile = Path.ChangeExtension(subtitlePath, ".idx");
+                    if (File.Exists(idxFile))
                     {
-                        hwOutputFormat = "yuv420p";
+                        subtitlePath = idxFile;
                     }
-
-                    arg = "-hwaccel vaapi -hwaccel_output_format " + hwOutputFormat + " -vaapi_device " + encodingOptions.VaapiDevice + " " + arg;
                 }
+
+                arg.Append(" -i \"").Append(subtitlePath).Append('\"');
             }
 
-            return arg.Trim();
+            return arg.ToString();
         }
 
         /// <summary>
@@ -472,8 +512,32 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             var codec = stream.Codec ?? string.Empty;
 
-            return codec.IndexOf("264", StringComparison.OrdinalIgnoreCase) != -1 ||
-                   codec.IndexOf("avc", StringComparison.OrdinalIgnoreCase) != -1;
+            return codec.IndexOf("264", StringComparison.OrdinalIgnoreCase) != -1
+                    || codec.IndexOf("avc", StringComparison.OrdinalIgnoreCase) != -1;
+        }
+
+        public bool IsH265(MediaStream stream)
+        {
+            var codec = stream.Codec ?? string.Empty;
+
+            return codec.IndexOf("265", StringComparison.OrdinalIgnoreCase) != -1
+                || codec.IndexOf("hevc", StringComparison.OrdinalIgnoreCase) != -1;
+        }
+
+        public string GetBitStreamArgs(MediaStream stream)
+        {
+            if (IsH264(stream))
+            {
+                return "-bsf:v h264_mp4toannexb";
+            }
+            else if (IsH265(stream))
+            {
+                return "-bsf:v hevc_mp4toannexb";
+            }
+            else
+            {
+                return null;
+            }
         }
 
         public string GetVideoBitrateParam(EncodingJobInfo state, string videoCodec)
@@ -486,26 +550,38 @@ namespace MediaBrowser.Controller.MediaEncoding
                 {
                     // With vpx when crf is used, b:v becomes a max rate
                     // https://trac.ffmpeg.org/wiki/vpxEncodingGuide.
-                    return string.Format(" -maxrate:v {0} -bufsize:v {1} -b:v {0}", bitrate.Value.ToString(_usCulture), (bitrate.Value * 2).ToString(_usCulture));
+                    return string.Format(
+                        CultureInfo.InvariantCulture,
+                        " -maxrate:v {0} -bufsize:v {1} -b:v {0}",
+                        bitrate.Value,
+                        bitrate.Value * 2);
                 }
 
                 if (string.Equals(videoCodec, "msmpeg4", StringComparison.OrdinalIgnoreCase))
                 {
-                    return string.Format(" -b:v {0}", bitrate.Value.ToString(_usCulture));
+                    return string.Format(
+                        CultureInfo.InvariantCulture,
+                        " -b:v {0}",
+                        bitrate.Value);
                 }
 
-                if (string.Equals(videoCodec, "libx264", StringComparison.OrdinalIgnoreCase))
+                if (string.Equals(videoCodec, "libx264", StringComparison.OrdinalIgnoreCase) ||
+                    string.Equals(videoCodec, "libx265", StringComparison.OrdinalIgnoreCase))
                 {
                     // h264
-                    return string.Format(" -maxrate {0} -bufsize {1}",
-                        bitrate.Value.ToString(_usCulture),
-                        (bitrate.Value * 2).ToString(_usCulture));
+                    return string.Format(
+                        CultureInfo.InvariantCulture,
+                        " -maxrate {0} -bufsize {1}",
+                        bitrate.Value,
+                        bitrate.Value * 2);
                 }
 
                 // h264
-                return string.Format(" -b:v {0} -maxrate {0} -bufsize {1}",
-                    bitrate.Value.ToString(_usCulture),
-                    (bitrate.Value * 2).ToString(_usCulture));
+                return string.Format(
+                    CultureInfo.InvariantCulture,
+                    " -b:v {0} -maxrate {0} -bufsize {1}",
+                    bitrate.Value,
+                    bitrate.Value * 2);
             }
 
             return string.Empty;
@@ -515,8 +591,10 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             // Clients may direct play higher than level 41, but there's no reason to transcode higher
             if (double.TryParse(level, NumberStyles.Any, _usCulture, out double requestLevel)
-                && string.Equals(videoCodec, "h264", StringComparison.OrdinalIgnoreCase)
-                && requestLevel > 41)
+                && requestLevel > 41
+                && (string.Equals(videoCodec, "h264", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(videoCodec, "h265", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(videoCodec, "hevc", StringComparison.OrdinalIgnoreCase)))
             {
                 return "41";
             }
@@ -536,7 +614,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             // hls always copies timestamps
             var setPtsParam = state.CopyTimestamps || state.TranscodingType != TranscodingJobType.Progressive
                 ? string.Empty
-                : string.Format(",setpts=PTS -{0}/TB", seconds.ToString(_usCulture));
+                : string.Format(CultureInfo.InvariantCulture, ",setpts=PTS -{0}/TB", seconds);
 
             // TODO
             // var fallbackFontPath = Path.Combine(_appPaths.ProgramDataPath, "fonts", "DroidSansFallback.ttf");
@@ -620,49 +698,53 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// <summary>
         /// Gets the video bitrate to specify on the command line
         /// </summary>
-        public string GetVideoQualityParam(EncodingJobInfo state, string videoEncoder, EncodingOptions encodingOptions, string defaultH264Preset)
+        public string GetVideoQualityParam(EncodingJobInfo state, string videoEncoder, EncodingOptions encodingOptions, string defaultPreset)
         {
             var param = string.Empty;
 
             var isVc1 = state.VideoStream != null &&
                 string.Equals(state.VideoStream.Codec, "vc1", StringComparison.OrdinalIgnoreCase);
+            var isLibX265 = string.Equals(videoEncoder, "libx265", StringComparison.OrdinalIgnoreCase);
 
-            if (string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase))
+            if (string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase) || isLibX265)
             {
-                if (!string.IsNullOrEmpty(encodingOptions.H264Preset))
+                if (!string.IsNullOrEmpty(encodingOptions.EncoderPreset))
                 {
-                    param += "-preset " + encodingOptions.H264Preset;
+                    param += "-preset " + encodingOptions.EncoderPreset;
                 }
                 else
                 {
-                    param += "-preset " + defaultH264Preset;
+                    param += "-preset " + defaultPreset;
                 }
 
-                if (encodingOptions.H264Crf >= 0 && encodingOptions.H264Crf <= 51)
+                int encodeCrf = encodingOptions.H264Crf;
+                if (isLibX265)
                 {
-                    param += " -crf " + encodingOptions.H264Crf.ToString(CultureInfo.InvariantCulture);
+                    encodeCrf = encodingOptions.H265Crf;
                 }
-                else
+
+                if (encodeCrf >= 0 && encodeCrf <= 51)
                 {
-                    param += " -crf 23";
+                    param += " -crf " + encodeCrf.ToString(CultureInfo.InvariantCulture);
                 }
-            }
-
-            else if (string.Equals(videoEncoder, "libx265", StringComparison.OrdinalIgnoreCase))
-            {
-                param += "-preset fast";
+                else
+                {
+                    string defaultCrf = "23";
+                    if (isLibX265)
+                    {
+                        defaultCrf = "28";
+                    }
 
-                param += " -crf 28";
+                    param += " -crf " + defaultCrf;
+                }
             }
-
-            // h264 (h264_qsv)
-            else if (string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase))
+            else if (string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase)) // h264 (h264_qsv)
             {
                 string[] valid_h264_qsv = { "veryslow", "slower", "slow", "medium", "fast", "faster", "veryfast" };
 
-                if (valid_h264_qsv.Contains(encodingOptions.H264Preset, StringComparer.OrdinalIgnoreCase))
+                if (valid_h264_qsv.Contains(encodingOptions.EncoderPreset, StringComparer.OrdinalIgnoreCase))
                 {
-                    param += "-preset " + encodingOptions.H264Preset;
+                    param += "-preset " + encodingOptions.EncoderPreset;
                 }
                 else
                 {
@@ -672,11 +754,10 @@ namespace MediaBrowser.Controller.MediaEncoding
                 param += " -look_ahead 0";
 
             }
-
-            // h264 (h264_nvenc)
-            else if (string.Equals(videoEncoder, "h264_nvenc", StringComparison.OrdinalIgnoreCase))
+            else if (string.Equals(videoEncoder, "h264_nvenc", StringComparison.OrdinalIgnoreCase) // h264 (h264_nvenc)
+                || string.Equals(videoEncoder, "hevc_nvenc", StringComparison.OrdinalIgnoreCase))
             {
-                switch (encodingOptions.H264Preset)
+                switch (encodingOptions.EncoderPreset)
                 {
                     case "veryslow":
 
@@ -705,9 +786,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                         break;
                 }
             }
-
-            // webm
-            else if (string.Equals(videoEncoder, "libvpx", StringComparison.OrdinalIgnoreCase))
+            else if (string.Equals(videoEncoder, "libvpx", StringComparison.OrdinalIgnoreCase)) // webm
             {
                 // Values 0-3, 0 being highest quality but slower
                 var profileScore = 0;
@@ -733,18 +812,14 @@ namespace MediaBrowser.Controller.MediaEncoding
                     qmin,
                     qmax);
             }
-
             else if (string.Equals(videoEncoder, "mpeg4", StringComparison.OrdinalIgnoreCase))
             {
                 param += "-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -bf 2";
             }
-
-            // asf/wmv
-            else if (string.Equals(videoEncoder, "wmv2", StringComparison.OrdinalIgnoreCase))
+            else if (string.Equals(videoEncoder, "wmv2", StringComparison.OrdinalIgnoreCase)) // asf/wmv
             {
                 param += "-qmin 2";
             }
-
             else if (string.Equals(videoEncoder, "msmpeg4", StringComparison.OrdinalIgnoreCase))
             {
                 param += "-mbd 2";
@@ -760,21 +835,21 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             var targetVideoCodec = state.ActualOutputVideoCodec;
 
-            var request = state.BaseRequest;
             var profile = state.GetRequestedProfiles(targetVideoCodec).FirstOrDefault();
 
             // vaapi does not support Baseline profile, force Constrained Baseline in this case,
             // which is compatible (and ugly)
-            if (string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase) &&
-                profile != null && profile.ToLowerInvariant().Contains("baseline"))
+            if (string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase)
+                && profile != null
+                && profile.IndexOf("baseline", StringComparison.OrdinalIgnoreCase) != -1)
             {
-                    profile = "constrained_baseline";
+                profile = "constrained_baseline";
             }
 
             if (!string.IsNullOrEmpty(profile))
             {
-                if (!string.Equals(videoEncoder, "h264_omx", StringComparison.OrdinalIgnoreCase) &&
-                    !string.Equals(videoEncoder, "h264_v4l2m2m", StringComparison.OrdinalIgnoreCase))
+                if (!string.Equals(videoEncoder, "h264_omx", StringComparison.OrdinalIgnoreCase)
+                    && !string.Equals(videoEncoder, "h264_v4l2m2m", StringComparison.OrdinalIgnoreCase))
                 {
                     // not supported by h264_omx
                     param += " -profile:v " + profile;
@@ -789,8 +864,9 @@ namespace MediaBrowser.Controller.MediaEncoding
 
                 // h264_qsv and h264_nvenc expect levels to be expressed as a decimal. libx264 supports decimal and non-decimal format
                 // also needed for libx264 due to https://trac.ffmpeg.org/ticket/3307
-                if (string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase) ||
-                    string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase))
+                if (string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(videoEncoder, "libx265", StringComparison.OrdinalIgnoreCase))
                 {
                     switch (level)
                     {
@@ -826,10 +902,11 @@ namespace MediaBrowser.Controller.MediaEncoding
                             break;
                     }
                 }
-                // nvenc doesn't decode with param -level set ?!
-                else if (string.Equals(videoEncoder, "h264_nvenc", StringComparison.OrdinalIgnoreCase))
+                else if (string.Equals(videoEncoder, "h264_nvenc", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(videoEncoder, "hevc_nvenc", StringComparison.OrdinalIgnoreCase))
                 {
-                    //param += "";
+                    // nvenc doesn't decode with param -level set ?!
+                    // TODO:
                 }
                 else if (!string.Equals(videoEncoder, "h264_omx", StringComparison.OrdinalIgnoreCase))
                 {
@@ -842,10 +919,15 @@ namespace MediaBrowser.Controller.MediaEncoding
                 param += " -x264opts:0 subme=0:me_range=4:rc_lookahead=10:me=dia:no_chroma_me:8x8dct=0:partitions=none";
             }
 
-            if (!string.Equals(videoEncoder, "h264_omx", StringComparison.OrdinalIgnoreCase) &&
-                !string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase) &&
-                !string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase) &&
-                !string.Equals(videoEncoder, "h264_v4l2m2m", StringComparison.OrdinalIgnoreCase))
+            if (string.Equals(videoEncoder, "libx265", StringComparison.OrdinalIgnoreCase))
+            {
+                // todo
+            }
+
+            if (!string.Equals(videoEncoder, "h264_omx", StringComparison.OrdinalIgnoreCase)
+                && !string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase)
+                && !string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase)
+                && !string.Equals(videoEncoder, "h264_v4l2m2m", StringComparison.OrdinalIgnoreCase))
             {
                 param = "-pix_fmt yuv420p " + param;
             }
@@ -867,12 +949,10 @@ namespace MediaBrowser.Controller.MediaEncoding
                 return false;
             }
 
-            if (videoStream.IsInterlaced)
+            if (videoStream.IsInterlaced
+                && state.DeInterlace(videoStream.Codec, false))
             {
-                if (state.DeInterlace(videoStream.Codec, false))
-                {
-                    return false;
-                }
+                return false;
             }
 
             if (videoStream.IsAnamorphic ?? false)
@@ -884,24 +964,23 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             // Can't stream copy if we're burning in subtitles
-            if (request.SubtitleStreamIndex.HasValue)
+            if (request.SubtitleStreamIndex.HasValue
+                && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
             {
-                if (state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
-                {
-                    return false;
-                }
+                return false;
             }
 
-            if (string.Equals("h264", videoStream.Codec, StringComparison.OrdinalIgnoreCase))
+            if (string.Equals("h264", videoStream.Codec, StringComparison.OrdinalIgnoreCase)
+                && videoStream.IsAVC.HasValue
+                && !videoStream.IsAVC.Value
+                && request.RequireAvc)
             {
-                if (videoStream.IsAVC.HasValue && !videoStream.IsAVC.Value && request.RequireAvc)
-                {
-                    return false;
-                }
+                return false;
             }
 
             // Source and target codecs must match
-            if (string.IsNullOrEmpty(videoStream.Codec) || !state.SupportedVideoCodecs.Contains(videoStream.Codec, StringComparer.OrdinalIgnoreCase))
+            if (string.IsNullOrEmpty(videoStream.Codec)
+                || !state.SupportedVideoCodecs.Contains(videoStream.Codec, StringComparer.OrdinalIgnoreCase))
             {
                 return false;
             }
@@ -931,21 +1010,17 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             // Video width must fall within requested value
-            if (request.MaxWidth.HasValue)
+            if (request.MaxWidth.HasValue
+                && (!videoStream.Width.HasValue || videoStream.Width.Value > request.MaxWidth.Value))
             {
-                if (!videoStream.Width.HasValue || videoStream.Width.Value > request.MaxWidth.Value)
-                {
-                    return false;
-                }
+                return false;
             }
 
             // Video height must fall within requested value
-            if (request.MaxHeight.HasValue)
+            if (request.MaxHeight.HasValue
+                && (!videoStream.Height.HasValue || videoStream.Height.Value > request.MaxHeight.Value))
             {
-                if (!videoStream.Height.HasValue || videoStream.Height.Value > request.MaxHeight.Value)
-                {
-                    return false;
-                }
+                return false;
             }
 
             // Video framerate must fall within requested value
@@ -961,12 +1036,10 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             // Video bitrate must fall within requested value
-            if (request.VideoBitRate.HasValue)
+            if (request.VideoBitRate.HasValue
+                && (!videoStream.BitRate.HasValue || videoStream.BitRate.Value > request.VideoBitRate.Value))
             {
-                if (!videoStream.BitRate.HasValue || videoStream.BitRate.Value > request.VideoBitRate.Value)
-                {
-                    return false;
-                }
+                return false;
             }
 
             var maxBitDepth = state.GetRequestedVideoBitDepth(videoStream.Codec);
@@ -979,35 +1052,31 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             var maxRefFrames = state.GetRequestedMaxRefFrames(videoStream.Codec);
-            if (maxRefFrames.HasValue)
+            if (maxRefFrames.HasValue
+                && videoStream.RefFrames.HasValue && videoStream.RefFrames.Value > maxRefFrames.Value)
             {
-                if (videoStream.RefFrames.HasValue && videoStream.RefFrames.Value > maxRefFrames.Value)
-                {
-                    return false;
-                }
+                return false;
             }
 
             // If a specific level was requested, the source must match or be less than
             var level = state.GetRequestedLevel(videoStream.Codec);
-            if (!string.IsNullOrEmpty(level))
+            if (!string.IsNullOrEmpty(level)
+                && double.TryParse(level, NumberStyles.Any, _usCulture, out var requestLevel))
             {
-                if (double.TryParse(level, NumberStyles.Any, _usCulture, out var requestLevel))
+                if (!videoStream.Level.HasValue)
                 {
-                    if (!videoStream.Level.HasValue)
-                    {
-                        //return false;
-                    }
+                    //return false;
+                }
 
-                    if (videoStream.Level.HasValue && videoStream.Level.Value > requestLevel)
-                    {
-                        return false;
-                    }
+                if (videoStream.Level.HasValue && videoStream.Level.Value > requestLevel)
+                {
+                    return false;
                 }
             }
 
-            if (string.Equals(state.InputContainer, "avi", StringComparison.OrdinalIgnoreCase) &&
-                string.Equals(videoStream.Codec, "h264", StringComparison.OrdinalIgnoreCase) &&
-                !(videoStream.IsAVC ?? false))
+            if (string.Equals(state.InputContainer, "avi", StringComparison.OrdinalIgnoreCase)
+                && string.Equals(videoStream.Codec, "h264", StringComparison.OrdinalIgnoreCase)
+                && !(videoStream.IsAVC ?? false))
             {
                 // see Coach S01E01 - Kelly and the Professor(0).avi
                 return false;
@@ -1016,7 +1085,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             return request.EnableAutoStreamCopy;
         }
 
-        public bool CanStreamCopyAudio(EncodingJobInfo state, MediaStream audioStream, string[] supportedAudioCodecs)
+        public bool CanStreamCopyAudio(EncodingJobInfo state, MediaStream audioStream, IEnumerable<string> supportedAudioCodecs)
         {
             var request = state.BaseRequest;
 
@@ -1026,16 +1095,16 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             var maxBitDepth = state.GetRequestedAudioBitDepth(audioStream.Codec);
-            if (maxBitDepth.HasValue)
+            if (maxBitDepth.HasValue
+                && audioStream.BitDepth.HasValue
+                && audioStream.BitDepth.Value > maxBitDepth.Value)
             {
-                if (audioStream.BitDepth.HasValue && audioStream.BitDepth.Value > maxBitDepth.Value)
-                {
-                    return false;
-                }
+                return false;
             }
 
             // Source and target codecs must match
-            if (string.IsNullOrEmpty(audioStream.Codec) || !supportedAudioCodecs.Contains(audioStream.Codec, StringComparer.OrdinalIgnoreCase))
+            if (string.IsNullOrEmpty(audioStream.Codec)
+                || !supportedAudioCodecs.Contains(audioStream.Codec, StringComparer.OrdinalIgnoreCase))
             {
                 return false;
             }
@@ -1048,6 +1117,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 {
                     return false;
                 }
+
                 if (audioStream.Channels.Value > channels.Value)
                 {
                     return false;
@@ -1061,6 +1131,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 {
                     return false;
                 }
+
                 if (audioStream.SampleRate.Value > request.AudioSampleRate.Value)
                 {
                     return false;
@@ -1074,6 +1145,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 {
                     return false;
                 }
+
                 if (audioStream.BitRate.Value > request.AudioBitRate.Value)
                 {
                     return false;
@@ -1089,29 +1161,29 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (videoStream != null)
             {
-                var isUpscaling = request.Height.HasValue && videoStream.Height.HasValue &&
-                    request.Height.Value > videoStream.Height.Value && request.Width.HasValue && videoStream.Width.HasValue &&
-                    request.Width.Value > videoStream.Width.Value;
+                var isUpscaling = request.Height.HasValue
+                    && videoStream.Height.HasValue
+                    && request.Height.Value > videoStream.Height.Value
+                    && request.Width.HasValue
+                    && videoStream.Width.HasValue
+                    && request.Width.Value > videoStream.Width.Value;
 
                 // Don't allow bitrate increases unless upscaling
-                if (!isUpscaling)
+                if (!isUpscaling && bitrate.HasValue && videoStream.BitRate.HasValue)
                 {
-                    if (bitrate.HasValue && videoStream.BitRate.HasValue)
-                    {
-                        bitrate = GetMinBitrate(videoStream.BitRate.Value, bitrate.Value);
-                    }
+                    bitrate = GetMinBitrate(videoStream.BitRate.Value, bitrate.Value);
                 }
-            }
-
-            if (bitrate.HasValue)
-            {
-                var inputVideoCodec = videoStream.Codec;
-                bitrate = ScaleBitrate(bitrate.Value, inputVideoCodec, outputVideoCodec);
 
-                // If a max bitrate was requested, don't let the scaled bitrate exceed it
-                if (request.VideoBitRate.HasValue)
+                if (bitrate.HasValue)
                 {
-                    bitrate = Math.Min(bitrate.Value, request.VideoBitRate.Value);
+                    var inputVideoCodec = videoStream.Codec;
+                    bitrate = ScaleBitrate(bitrate.Value, inputVideoCodec, outputVideoCodec);
+
+                    // If a max bitrate was requested, don't let the scaled bitrate exceed it
+                    if (request.VideoBitRate.HasValue)
+                    {
+                        bitrate = Math.Min(bitrate.Value, request.VideoBitRate.Value);
+                    }
                 }
             }
 
@@ -1127,7 +1199,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
             else if (sourceBitrate <= 3000000)
             {
-                sourceBitrate = Convert.ToInt32(sourceBitrate * 2);
+                sourceBitrate *= 2;
             }
 
             var bitrate = Math.Min(sourceBitrate, requestedBitrate);
@@ -1137,12 +1209,13 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         private static double GetVideoBitrateScaleFactor(string codec)
         {
-            if (StringHelper.EqualsIgnoreCase(codec, "h265") ||
-                StringHelper.EqualsIgnoreCase(codec, "hevc") ||
-                StringHelper.EqualsIgnoreCase(codec, "vp9"))
+            if (string.Equals(codec, "h265", StringComparison.OrdinalIgnoreCase)
+                || string.Equals(codec, "hevc", StringComparison.OrdinalIgnoreCase)
+                || string.Equals(codec, "vp9", StringComparison.OrdinalIgnoreCase))
             {
                 return .5;
             }
+
             return 1;
         }
 
@@ -1169,21 +1242,15 @@ namespace MediaBrowser.Controller.MediaEncoding
                 scaleFactor = Math.Max(scaleFactor, 2);
             }
 
-            var newBitrate = scaleFactor * bitrate;
-
-            return Convert.ToInt32(newBitrate);
+            return Convert.ToInt32(scaleFactor * bitrate);
         }
 
         public int? GetAudioBitrateParam(BaseEncodingJobOptions request, MediaStream audioStream)
         {
             if (request.AudioBitRate.HasValue)
             {
-                // Make sure we don't request a bitrate higher than the source
-                var currentBitrate = audioStream == null ? request.AudioBitRate.Value : audioStream.BitRate ?? request.AudioBitRate.Value;
-
                 // Don't encode any higher than this
                 return Math.Min(384000, request.AudioBitRate.Value);
-                //return Math.Min(currentBitrate, request.AudioBitRate.Value);
             }
 
             return null;
@@ -1196,12 +1263,14 @@ namespace MediaBrowser.Controller.MediaEncoding
             var filters = new List<string>();
 
             // Boost volume to 200% when downsampling from 6ch to 2ch
-            if (channels.HasValue && channels.Value <= 2)
+            if (channels.HasValue
+                && channels.Value <= 2
+                && state.AudioStream != null
+                && state.AudioStream.Channels.HasValue
+                && state.AudioStream.Channels.Value > 5
+                && !encodingOptions.DownMixAudioBoost.Equals(1))
             {
-                if (state.AudioStream != null && state.AudioStream.Channels.HasValue && state.AudioStream.Channels.Value > 5 && !encodingOptions.DownMixAudioBoost.Equals(1))
-                {
-                    filters.Add("volume=" + encodingOptions.DownMixAudioBoost.ToString(_usCulture));
-                }
+                filters.Add("volume=" + encodingOptions.DownMixAudioBoost.ToString(_usCulture));
             }
 
             var isCopyingTimestamps = state.CopyTimestamps || state.TranscodingType != TranscodingJobType.Progressive;
@@ -1209,12 +1278,16 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 var seconds = TimeSpan.FromTicks(state.StartTimeTicks ?? 0).TotalSeconds;
 
-                filters.Add(string.Format("asetpts=PTS-{0}/TB", Math.Round(seconds).ToString(_usCulture)));
+                filters.Add(
+                    string.Format(
+                        CultureInfo.InvariantCulture,
+                        "asetpts=PTS-{0}/TB",
+                        Math.Round(seconds)));
             }
 
             if (filters.Count > 0)
             {
-                return "-af \"" + string.Join(",", filters.ToArray()) + "\"";
+                return "-af \"" + string.Join(",", filters) + "\"";
             }
 
             return string.Empty;
@@ -1231,18 +1304,17 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             var request = state.BaseRequest;
 
-            var inputChannels = audioStream == null
-                ? null
-                : audioStream.Channels;
+            var inputChannels = audioStream?.Channels;
 
             if (inputChannels <= 0)
             {
                 inputChannels = null;
             }
 
-            int? transcoderChannelLimit = null;
             var codec = outputAudioCodec ?? string.Empty;
 
+
+            int? transcoderChannelLimit;
             if (codec.IndexOf("wma", StringComparison.OrdinalIgnoreCase) != -1)
             {
                 // wmav2 currently only supports two channel output
@@ -1291,6 +1363,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 return val2;
             }
+
             if (!val2.HasValue)
             {
                 return val1;
@@ -1364,7 +1437,10 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (state.VideoStream != null)
             {
-                args += string.Format("-map 0:{0}", state.VideoStream.Index);
+                args += string.Format(
+                    CultureInfo.InvariantCulture,
+                    "-map 0:{0}",
+                    state.VideoStream.Index);
             }
             else
             {
@@ -1374,7 +1450,10 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (state.AudioStream != null)
             {
-                args += string.Format(" -map 0:{0}", state.AudioStream.Index);
+                args += string.Format(
+                    CultureInfo.InvariantCulture,
+                    " -map 0:{0}",
+                    state.AudioStream.Index);
             }
 
             else
@@ -1389,7 +1468,10 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
             else if (subtitleMethod == SubtitleDeliveryMethod.Embed)
             {
-                args += string.Format(" -map 0:{0}", state.SubtitleStream.Index);
+                args += string.Format(
+                    CultureInfo.InvariantCulture,
+                    " -map 0:{0}",
+                    state.SubtitleStream.Index);
             }
             else if (state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream)
             {
@@ -1441,7 +1523,10 @@ namespace MediaBrowser.Controller.MediaEncoding
             var request = state.BaseRequest;
 
             // Add resolution params, if specified
-            if (request.Width.HasValue || request.Height.HasValue || request.MaxHeight.HasValue || request.MaxWidth.HasValue)
+            if (request.Width.HasValue
+                || request.Height.HasValue
+                || request.MaxHeight.HasValue
+                || request.MaxWidth.HasValue)
             {
                 outputSizeParam = GetOutputSizeParam(state, options, outputVideoCodec).TrimEnd('"');
 
@@ -1463,12 +1548,15 @@ namespace MediaBrowser.Controller.MediaEncoding
                 }
             }
 
-            if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase) && outputSizeParam.Length == 0)
+            if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase)
+                && outputSizeParam.Length == 0)
             {
                 outputSizeParam = ",format=nv12|vaapi,hwupload";
 
                 // Add parameters to use VAAPI with burn-in subttiles (GH issue #642)
-                if (state.SubtitleStream != null && state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode) {
+                if (state.SubtitleStream != null
+                    && state.SubtitleStream.IsTextSubtitleStream
+                    && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode) {
                     outputSizeParam += ",hwmap=mode=read+write+direct";
                 }
             }
@@ -1477,7 +1565,11 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (state.VideoStream != null && state.VideoStream.Width.HasValue && state.VideoStream.Height.HasValue)
             {
-                videoSizeParam = string.Format("scale={0}:{1}", state.VideoStream.Width.Value.ToString(_usCulture), state.VideoStream.Height.Value.ToString(_usCulture));
+                videoSizeParam = string.Format(
+                    CultureInfo.InvariantCulture,
+                    "scale={0}:{1}",
+                    state.VideoStream.Width.Value,
+                    state.VideoStream.Height.Value);
 
                 videoSizeParam += ":force_original_aspect_ratio=decrease";
             }
@@ -1490,15 +1582,18 @@ namespace MediaBrowser.Controller.MediaEncoding
                 ? 0
                 : state.SubtitleStream.Index;
 
-            return string.Format(" -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}][sub]overlay{3}\"",
-                mapPrefix.ToString(_usCulture),
-                subtitleStreamIndex.ToString(_usCulture),
-                state.VideoStream.Index.ToString(_usCulture),
+            return string.Format(
+                CultureInfo.InvariantCulture,
+                " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}][sub]overlay{3}\"",
+                mapPrefix,
+                subtitleStreamIndex,
+                state.VideoStream.Index,
                 outputSizeParam,
                 videoSizeParam);
         }
 
-        private ValueTuple<int?, int?> GetFixedOutputSize(int? videoWidth,
+        private (int? width, int? height) GetFixedOutputSize(
+            int? videoWidth,
             int? videoHeight,
             int? requestedWidth,
             int? requestedHeight,
@@ -1507,11 +1602,11 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             if (!videoWidth.HasValue && !requestedWidth.HasValue)
             {
-                return new ValueTuple<int?, int?>(null, null);
+                return (null, null);
             }
             if (!videoHeight.HasValue && !requestedHeight.HasValue)
             {
-                return new ValueTuple<int?, int?>(null, null);
+                return (null, null);
             }
 
             decimal inputWidth = Convert.ToDecimal(videoWidth ?? requestedWidth);
@@ -1531,7 +1626,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             outputWidth = 2 * Math.Truncate(outputWidth / 2);
             outputHeight = 2 * Math.Truncate(outputHeight / 2);
 
-            return new ValueTuple<int?, int?>(Convert.ToInt32(outputWidth), Convert.ToInt32(outputHeight));
+            return (Convert.ToInt32(outputWidth), Convert.ToInt32(outputHeight));
         }
 
         public List<string> GetScalingFilters(int? videoWidth,
@@ -1545,9 +1640,17 @@ namespace MediaBrowser.Controller.MediaEncoding
             int? requestedMaxHeight)
         {
             var filters = new List<string>();
-            var fixedOutputSize = GetFixedOutputSize(videoWidth, videoHeight, requestedWidth, requestedHeight, requestedMaxWidth, requestedMaxHeight);
-
-            if (string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase) && fixedOutputSize.Item1.HasValue && fixedOutputSize.Item2.HasValue)
+            var (width, height) = GetFixedOutputSize(
+                videoWidth,
+                videoHeight,
+                requestedWidth,
+                requestedHeight,
+                requestedMaxWidth,
+                requestedMaxHeight);
+
+            if (string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase)
+                && width.HasValue
+                && height.HasValue)
             {
                 // Work around vaapi's reduced scaling features
                 var scaler = "scale_vaapi";
@@ -1555,15 +1658,26 @@ namespace MediaBrowser.Controller.MediaEncoding
                 // Given the input dimensions (inputWidth, inputHeight), determine the output dimensions
                 // (outputWidth, outputHeight). The user may request precise output dimensions or maximum
                 // output dimensions. Output dimensions are guaranteed to be even.
-                var outputWidth = fixedOutputSize.Item1.Value;
-                var outputHeight = fixedOutputSize.Item2.Value;
+                var outputWidth = width.Value;
+                var outputHeight = height.Value;
 
-                if (!videoWidth.HasValue || outputWidth != videoWidth.Value || !videoHeight.HasValue || outputHeight != videoHeight.Value)
+                if (!videoWidth.HasValue
+                    || outputWidth != videoWidth.Value
+                    || !videoHeight.HasValue
+                    || outputHeight != videoHeight.Value)
                 {
-                    filters.Add(string.Format("{0}=w={1}:h={2}", scaler, outputWidth.ToString(_usCulture), outputHeight.ToString(_usCulture)));
+                    filters.Add(
+                        string.Format(
+                            CultureInfo.InvariantCulture,
+                            "{0}=w={1}:h={2}",
+                            scaler,
+                            outputWidth,
+                            outputHeight));
                 }
             }
-            else if ((videoDecoder ?? string.Empty).IndexOf("_cuvid", StringComparison.OrdinalIgnoreCase) != -1 && fixedOutputSize.Item1.HasValue && fixedOutputSize.Item2.HasValue)
+            else if ((videoDecoder ?? string.Empty).IndexOf("_cuvid", StringComparison.OrdinalIgnoreCase) != -1
+                && width.HasValue
+                && height.HasValue)
             {
                 // Nothing to do, it's handled as an input resize filter
             }
@@ -1579,7 +1693,12 @@ namespace MediaBrowser.Controller.MediaEncoding
                         var widthParam = requestedWidth.Value.ToString(_usCulture);
                         var heightParam = requestedHeight.Value.ToString(_usCulture);
 
-                        filters.Add(string.Format("scale=trunc({0}/64)*64:trunc({1}/2)*2", widthParam, heightParam));
+                        filters.Add(
+                            string.Format(
+                                CultureInfo.InvariantCulture,
+                                "scale=trunc({0}/64)*64:trunc({1}/2)*2",
+                                widthParam,
+                                heightParam));
                     }
                     else
                     {
@@ -1595,11 +1714,21 @@ namespace MediaBrowser.Controller.MediaEncoding
 
                     if (isExynosV4L2)
                     {
-                        filters.Add(string.Format("scale=trunc(min(max(iw\\,ih*dar)\\,min({0}\\,{1}*dar))/64)*64:trunc(min(max(iw/dar\\,ih)\\,min({0}/dar\\,{1}))/2)*2", maxWidthParam, maxHeightParam));
+                        filters.Add(
+                            string.Format(
+                                CultureInfo.InvariantCulture,
+                                "scale=trunc(min(max(iw\\,ih*dar)\\,min({0}\\,{1}*dar))/64)*64:trunc(min(max(iw/dar\\,ih)\\,min({0}/dar\\,{1}))/2)*2",
+                                maxWidthParam,
+                                maxHeightParam));
                     }
                     else
                     {
-                        filters.Add(string.Format("scale=trunc(min(max(iw\\,ih*dar)\\,min({0}\\,{1}*dar))/2)*2:trunc(min(max(iw/dar\\,ih)\\,min({0}/dar\\,{1}))/2)*2", maxWidthParam, maxHeightParam));
+                        filters.Add(
+                            string.Format(
+                                CultureInfo.InvariantCulture,
+                                "scale=trunc(min(max(iw\\,ih*dar)\\,min({0}\\,{1}*dar))/2)*2:trunc(min(max(iw/dar\\,ih)\\,min({0}/dar\\,{1}))/2)*2",
+                                maxWidthParam,
+                                maxHeightParam));
                     }
                 }
 
@@ -1615,7 +1744,11 @@ namespace MediaBrowser.Controller.MediaEncoding
                     {
                         var widthParam = requestedWidth.Value.ToString(_usCulture);
 
-                        filters.Add(string.Format("scale={0}:trunc(ow/a/2)*2", widthParam));
+                        filters.Add(
+                            string.Format(
+                                CultureInfo.InvariantCulture,
+                                "scale={0}:trunc(ow/a/2)*2",
+                                widthParam));
                     }
                 }
 
@@ -1626,11 +1759,19 @@ namespace MediaBrowser.Controller.MediaEncoding
 
                     if (isExynosV4L2)
                     {
-                        filters.Add(string.Format("scale=trunc(oh*a/64)*64:{0}", heightParam));
+                        filters.Add(
+                            string.Format(
+                                CultureInfo.InvariantCulture,
+                                "scale=trunc(oh*a/64)*64:{0}",
+                                heightParam));
                     }
                     else
                     {
-                        filters.Add(string.Format("scale=trunc(oh*a/2)*2:{0}", heightParam));
+                        filters.Add(
+                            string.Format(
+                                CultureInfo.InvariantCulture,
+                                "scale=trunc(oh*a/2)*2:{0}",
+                                heightParam));
                     }
                 }
 
@@ -1641,11 +1782,19 @@ namespace MediaBrowser.Controller.MediaEncoding
 
                     if (isExynosV4L2)
                     {
-                        filters.Add(string.Format("scale=trunc(min(max(iw\\,ih*dar)\\,{0})/64)*64:trunc(ow/dar/2)*2", maxWidthParam));
+                        filters.Add(
+                            string.Format(
+                                CultureInfo.InvariantCulture,
+                                "scale=trunc(min(max(iw\\,ih*dar)\\,{0})/64)*64:trunc(ow/dar/2)*2",
+                                maxWidthParam));
                     }
                     else
                     {
-                        filters.Add(string.Format("scale=trunc(min(max(iw\\,ih*dar)\\,{0})/2)*2:trunc(ow/dar/2)*2", maxWidthParam));
+                        filters.Add(
+                            string.Format(
+                                CultureInfo.InvariantCulture,
+                                "scale=trunc(min(max(iw\\,ih*dar)\\,{0})/2)*2:trunc(ow/dar/2)*2",
+                                maxWidthParam));
                     }
                 }
 
@@ -1656,11 +1805,19 @@ namespace MediaBrowser.Controller.MediaEncoding
 
                     if (isExynosV4L2)
                     {
-                        filters.Add(string.Format("scale=trunc(oh*a/64)*64:min(max(iw/dar\\,ih)\\,{0})", maxHeightParam));
+                        filters.Add(
+                            string.Format(
+                                CultureInfo.InvariantCulture,
+                                "scale=trunc(oh*a/64)*64:min(max(iw/dar\\,ih)\\,{0})",
+                                maxHeightParam));
                     }
                     else
                     {
-                        filters.Add(string.Format("scale=trunc(oh*a/2)*2:min(max(iw/dar\\,ih)\\,{0})", maxHeightParam));
+                        filters.Add(
+                            string.Format(
+                                CultureInfo.InvariantCulture,
+                                "scale=trunc(oh*a/2)*2:min(max(iw/dar\\,ih)\\,{0})",
+                                maxHeightParam));
                     }
                 }
             }
@@ -1670,8 +1827,8 @@ namespace MediaBrowser.Controller.MediaEncoding
 
         private string GetFixedSizeScalingFilter(Video3DFormat? threedFormat, int requestedWidth, int requestedHeight)
         {
-            var widthParam = requestedWidth.ToString(_usCulture);
-            var heightParam = requestedHeight.ToString(_usCulture);
+            var widthParam = requestedWidth.ToString(CultureInfo.InvariantCulture);
+            var heightParam = requestedHeight.ToString(CultureInfo.InvariantCulture);
 
             string filter = null;
 
@@ -1713,13 +1870,14 @@ namespace MediaBrowser.Controller.MediaEncoding
                 }
             }
 
-            return string.Format(filter, widthParam, heightParam);
+            return string.Format(CultureInfo.InvariantCulture, filter, widthParam, heightParam);
         }
 
         /// <summary>
         /// If we're going to put a fixed size on the command line, this will calculate it
         /// </summary>
-        public string GetOutputSizeParam(EncodingJobInfo state,
+        public string GetOutputSizeParam(
+            EncodingJobInfo state,
             EncodingOptions options,
             string outputVideoCodec,
             bool allowTimeStampCopy = true)
@@ -1728,24 +1886,45 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             var request = state.BaseRequest;
 
+            var videoStream = state.VideoStream;
             var filters = new List<string>();
 
+            // If we're hardware VAAPI decoding and software encoding, download frames from the decoder first
+            var hwType = options.HardwareAccelerationType ?? string.Empty;
+            if (string.Equals(hwType, "vaapi", StringComparison.OrdinalIgnoreCase) && !options.EnableHardwareEncoding )
+            {
+                filters.Add("hwdownload");
+
+                // If transcoding from 10 bit, transform colour spaces too
+                if (!string.IsNullOrEmpty(videoStream.PixelFormat)
+                    && videoStream.PixelFormat.IndexOf("p10", StringComparison.OrdinalIgnoreCase) != -1
+                    && string.Equals(outputVideoCodec,"libx264", StringComparison.OrdinalIgnoreCase))
+                {
+                    filters.Add("format=p010le");
+                    filters.Add("format=nv12");
+                }
+                else
+                {
+                    filters.Add("format=nv12");
+                }
+            }
+
             if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
             {
                 filters.Add("format=nv12|vaapi");
                 filters.Add("hwupload");
             }
 
-            if (state.DeInterlace("h264", true) && string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
+            if (state.DeInterlace("h264", true)
+                && string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
             {
-                filters.Add(string.Format("deinterlace_vaapi"));
+                filters.Add(string.Format(CultureInfo.InvariantCulture, "deinterlace_vaapi"));
             }
 
-            var videoStream = state.VideoStream;
-
-            if (state.DeInterlace("h264", true) && !string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
+            if ((state.DeInterlace("h264", true) || state.DeInterlace("h265", true) || state.DeInterlace("hevc", true))
+                && !string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
             {
-                var inputFramerate = videoStream == null ? null : videoStream.RealFrameRate;
+                var inputFramerate = videoStream?.RealFrameRate;
 
                 // If it is already 60fps then it will create an output framerate that is much too high for roku and others to handle
                 if (string.Equals(options.DeinterlaceMethod, "bobandweave", StringComparison.OrdinalIgnoreCase) && (inputFramerate ?? 60) <= 30)
@@ -1758,11 +1937,11 @@ namespace MediaBrowser.Controller.MediaEncoding
                 }
             }
 
-            var inputWidth = videoStream == null ? null : videoStream.Width;
-            var inputHeight = videoStream == null ? null : videoStream.Height;
+            var inputWidth = videoStream?.Width;
+            var inputHeight = videoStream?.Height;
             var threeDFormat = state.MediaSource.Video3DFormat;
 
-            var videoDecoder = this.GetHardwareAcceleratedVideoDecoder(state, options);
+            var videoDecoder = GetHardwareAcceleratedVideoDecoder(state, options);
 
             filters.AddRange(GetScalingFilters(inputWidth, inputHeight, threeDFormat, videoDecoder, outputVideoCodec, request.Width, request.Height, request.MaxWidth, request.MaxHeight));
 
@@ -1780,6 +1959,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 {
                     filters.Add("hwmap");
                 }
+
                 if (allowTimeStampCopy)
                 {
                     output += " -copyts";
@@ -1788,7 +1968,10 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (filters.Count > 0)
             {
-                output += string.Format(" -vf \"{0}\"", string.Join(",", filters.ToArray()));
+                output += string.Format(
+                    CultureInfo.InvariantCulture,
+                    " -vf \"{0}\"",
+                    string.Join(",", filters));
             }
 
             return output;
@@ -1836,7 +2019,8 @@ namespace MediaBrowser.Controller.MediaEncoding
                 }
             }
 
-            if (state.AudioStream != null && CanStreamCopyAudio(state, state.AudioStream, state.SupportedAudioCodecs))
+            if (state.AudioStream != null
+                && CanStreamCopyAudio(state, state.AudioStream, state.SupportedAudioCodecs))
             {
                 state.OutputAudioCodec = "copy";
             }
@@ -1853,14 +2037,10 @@ namespace MediaBrowser.Controller.MediaEncoding
         }
 
         public static string GetProbeSizeArgument(int numInputFiles)
-        {
-            return numInputFiles > 1 ? "-probesize 1G" : "";
-        }
+            => numInputFiles > 1 ? "-probesize 1G" : "";
 
         public static string GetAnalyzeDurationArgument(int numInputFiles)
-        {
-            return numInputFiles > 1 ? "-analyzeduration 200M" : "";
-        }
+            => numInputFiles > 1 ? "-analyzeduration 200M" : "";
 
         public string GetInputModifier(EncodingJobInfo state, EncodingOptions encodingOptions)
         {
@@ -1928,18 +2108,22 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 flags.Add("+igndts");
             }
+
             if (state.IgnoreInputIndex)
             {
                 flags.Add("+ignidx");
             }
+
             if (state.GenPtsInput || string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
             {
                 flags.Add("+genpts");
             }
+
             if (state.DiscardCorruptFramesInput)
             {
                 flags.Add("+discardcorrupt");
             }
+
             if (state.EnableFastSeekInput)
             {
                 flags.Add("+fastseek");
@@ -1947,24 +2131,33 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (flags.Count > 0)
             {
-                inputModifier += " -fflags " + string.Join("", flags.ToArray());
+                inputModifier += " -fflags " + string.Join(string.Empty, flags);
             }
 
-            var videoDecoder = this.GetHardwareAcceleratedVideoDecoder(state, encodingOptions);
+            var videoDecoder = GetHardwareAcceleratedVideoDecoder(state, encodingOptions);
             if (!string.IsNullOrEmpty(videoDecoder))
             {
                 inputModifier += " " + videoDecoder;
 
-                var videoStream = state.VideoStream;
-                var inputWidth = videoStream == null ? null : videoStream.Width;
-                var inputHeight = videoStream == null ? null : videoStream.Height;
-                var request = state.BaseRequest;
+                if ((videoDecoder ?? string.Empty).IndexOf("_cuvid", StringComparison.OrdinalIgnoreCase) != -1)
+                {
+                    var videoStream = state.VideoStream;
+                    var inputWidth = videoStream?.Width;
+                    var inputHeight = videoStream?.Height;
+                    var request = state.BaseRequest;
 
-                var fixedOutputSize = GetFixedOutputSize(inputWidth, inputHeight, request.Width, request.Height, request.MaxWidth, request.MaxHeight);
+                    var (width, height) = GetFixedOutputSize(inputWidth, inputHeight, request.Width, request.Height, request.MaxWidth, request.MaxHeight);
 
-                if ((videoDecoder ?? string.Empty).IndexOf("_cuvid", StringComparison.OrdinalIgnoreCase) != -1 && fixedOutputSize.Item1.HasValue && fixedOutputSize.Item2.HasValue)
-                {
-                    inputModifier += string.Format(" -resize {0}x{1}", fixedOutputSize.Item1.Value.ToString(_usCulture), fixedOutputSize.Item2.Value.ToString(_usCulture));
+                    if ((videoDecoder ?? string.Empty).IndexOf("_cuvid", StringComparison.OrdinalIgnoreCase) != -1
+                        && width.HasValue
+                        && height.HasValue)
+                    {
+                        inputModifier += string.Format(
+                            CultureInfo.InvariantCulture,
+                            " -resize {0}x{1}",
+                            width.Value,
+                            height.Value);
+                    }
                 }
             }
 
@@ -1973,9 +2166,9 @@ namespace MediaBrowser.Controller.MediaEncoding
                 var outputVideoCodec = GetVideoEncoder(state, encodingOptions);
 
                 // Important: If this is ever re-enabled, make sure not to use it with wtv because it breaks seeking
-                if (!string.Equals(state.InputContainer, "wtv", StringComparison.OrdinalIgnoreCase) &&
-                    state.TranscodingType != TranscodingJobType.Progressive &&
-                    state.EnableBreakOnNonKeyFrames(outputVideoCodec))
+                if (!string.Equals(state.InputContainer, "wtv", StringComparison.OrdinalIgnoreCase)
+                    && state.TranscodingType != TranscodingJobType.Progressive
+                    && state.EnableBreakOnNonKeyFrames(outputVideoCodec))
                 {
                     inputModifier += " -noaccurate_seek";
                 }
@@ -1999,14 +2192,16 @@ namespace MediaBrowser.Controller.MediaEncoding
         }
 
 
-        public void AttachMediaSourceInfo(EncodingJobInfo state,
-          MediaSourceInfo mediaSource,
-          string requestedUrl)
+        public void AttachMediaSourceInfo(
+            EncodingJobInfo state,
+            MediaSourceInfo mediaSource,
+            string requestedUrl)
         {
             if (state == null)
             {
                 throw new ArgumentNullException(nameof(state));
             }
+
             if (mediaSource == null)
             {
                 throw new ArgumentNullException(nameof(mediaSource));
@@ -2064,15 +2259,16 @@ namespace MediaBrowser.Controller.MediaEncoding
             state.RemoteHttpHeaders = mediaSource.RequiredHttpHeaders;
             state.ReadInputAtNativeFramerate = mediaSource.ReadAtNativeFramerate;
 
-            if (state.ReadInputAtNativeFramerate ||
-                mediaSource.Protocol == MediaProtocol.File && string.Equals(mediaSource.Container, "wtv", StringComparison.OrdinalIgnoreCase))
+            if (state.ReadInputAtNativeFramerate
+                || mediaSource.Protocol == MediaProtocol.File
+                && string.Equals(mediaSource.Container, "wtv", StringComparison.OrdinalIgnoreCase))
             {
                 state.InputVideoSync = "-1";
                 state.InputAudioSync = "1";
             }
 
-            if (string.Equals(mediaSource.Container, "wma", StringComparison.OrdinalIgnoreCase) ||
-                string.Equals(mediaSource.Container, "asf", StringComparison.OrdinalIgnoreCase))
+            if (string.Equals(mediaSource.Container, "wma", StringComparison.OrdinalIgnoreCase)
+                || string.Equals(mediaSource.Container, "asf", StringComparison.OrdinalIgnoreCase))
             {
                 // Seeing some stuttering when transcoding wma to audio-only HLS
                 state.InputAudioSync = "1";
@@ -2184,7 +2380,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 return null;
             }
 
-            return this.GetHardwareAcceleratedVideoDecoder(state.MediaSource.VideoType ?? VideoType.VideoFile, state.VideoStream, encodingOptions);
+            return GetHardwareAcceleratedVideoDecoder(state.MediaSource.VideoType ?? VideoType.VideoFile, state.VideoStream, encodingOptions);
         }
 
         public string GetHardwareAcceleratedVideoDecoder(VideoType videoType, MediaStream videoStream, EncodingOptions encodingOptions)
@@ -2197,9 +2393,9 @@ namespace MediaBrowser.Controller.MediaEncoding
                 return null;
             }
 
-            if (videoStream != null &&
-                !string.IsNullOrEmpty(videoStream.Codec) &&
-                !string.IsNullOrEmpty(encodingOptions.HardwareAccelerationType))
+            if (videoStream != null
+                && !string.IsNullOrEmpty(videoStream.Codec)
+                && !string.IsNullOrEmpty(encodingOptions.HardwareAccelerationType))
             {
                 if (string.Equals(encodingOptions.HardwareAccelerationType, "qsv", StringComparison.OrdinalIgnoreCase))
                 {
@@ -2349,7 +2545,10 @@ namespace MediaBrowser.Controller.MediaEncoding
                 {
                     if (Environment.OSVersion.Platform == PlatformID.Win32NT)
                     {
-                        return "-hwaccel dxva2";
+                        if(Environment.OSVersion.Version.Major > 6 || (Environment.OSVersion.Version.Major == 6 && Environment.OSVersion.Version.Minor > 1))
+                            return "-hwaccel d3d11va";
+                        else
+                            return "-hwaccel dxva2";
                     }
 
                     switch (videoStream.Codec.ToLowerInvariant())
@@ -2397,14 +2596,10 @@ namespace MediaBrowser.Controller.MediaEncoding
                 codec = format;
             }
 
-            var args = " -codec:s:0 " + codec;
-
-            args += " -disposition:s:0 default";
-
-            return args;
+            return " -codec:s:0 " + codec + " -disposition:s:0 default";
         }
 
-        public string GetProgressiveVideoFullCommandLine(EncodingJobInfo state, EncodingOptions encodingOptions, string outputPath, string defaultH264Preset)
+        public string GetProgressiveVideoFullCommandLine(EncodingJobInfo state, EncodingOptions encodingOptions, string outputPath, string defaultPreset)
         {
             // Get the output codec name
             var videoCodec = GetVideoEncoder(state, encodingOptions);
@@ -2412,8 +2607,8 @@ namespace MediaBrowser.Controller.MediaEncoding
             var format = string.Empty;
             var keyFrame = string.Empty;
 
-            if (string.Equals(Path.GetExtension(outputPath), ".mp4", StringComparison.OrdinalIgnoreCase) &&
-                state.BaseRequest.Context == EncodingContext.Streaming)
+            if (string.Equals(Path.GetExtension(outputPath), ".mp4", StringComparison.OrdinalIgnoreCase)
+                && state.BaseRequest.Context == EncodingContext.Streaming)
             {
                 // Comparison: https://github.com/jansmolders86/mediacenterjs/blob/master/lib/transcoding/desktop.js
                 format = " -f mp4 -movflags frag_keyframe+empty_moov";
@@ -2423,18 +2618,19 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             var inputModifier = GetInputModifier(state, encodingOptions);
 
-            return string.Format("{0} {1}{2} {3} {4} -map_metadata -1 -map_chapters -1 -threads {5} {6}{7}{8} -y \"{9}\"",
+            return string.Format(
+                CultureInfo.InvariantCulture,
+                "{0} {1}{2} {3} {4} -map_metadata -1 -map_chapters -1 -threads {5} {6}{7}{8} -y \"{9}\"",
                 inputModifier,
                 GetInputArgument(state, encodingOptions),
                 keyFrame,
                 GetMapArgs(state),
-                GetProgressiveVideoArguments(state, encodingOptions, videoCodec, defaultH264Preset),
+                GetProgressiveVideoArguments(state, encodingOptions, videoCodec, defaultPreset),
                 threads,
                 GetProgressiveVideoAudioArguments(state, encodingOptions),
                 GetSubtitleEmbedArguments(state),
                 format,
-                outputPath
-                ).Trim();
+                outputPath).Trim();
         }
 
         public string GetOutputFFlags(EncodingJobInfo state)
@@ -2447,13 +2643,13 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (flags.Count > 0)
             {
-                return " -fflags " + string.Join("", flags.ToArray());
+                return " -fflags " + string.Join("", flags);
             }
 
             return string.Empty;
         }
 
-        public string GetProgressiveVideoArguments(EncodingJobInfo state, EncodingOptions encodingOptions, string videoCodec, string defaultH264Preset)
+        public string GetProgressiveVideoArguments(EncodingJobInfo state, EncodingOptions encodingOptions, string videoCodec, string defaultPreset)
         {
             var args = "-codec:v:0 " + videoCodec;
 
@@ -2464,11 +2660,15 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (string.Equals(videoCodec, "copy", StringComparison.OrdinalIgnoreCase))
             {
-                if (state.VideoStream != null && IsH264(state.VideoStream) &&
-                    string.Equals(state.OutputContainer, "ts", StringComparison.OrdinalIgnoreCase) &&
-                    !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
+                if (state.VideoStream != null
+                    && string.Equals(state.OutputContainer, "ts", StringComparison.OrdinalIgnoreCase)
+                    && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
                 {
-                    args += " -bsf:v h264_mp4toannexb";
+                    string bitStreamArgs = GetBitStreamArgs(state.VideoStream);
+                    if (!string.IsNullOrEmpty(bitStreamArgs))
+                    {
+                        args += " " + bitStreamArgs;
+                    }
                 }
 
                 if (state.RunTimeTicks.HasValue && state.BaseRequest.CopyTimestamps)
@@ -2483,8 +2683,10 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
             else
             {
-                var keyFrameArg = string.Format(" -force_key_frames \"expr:gte(t,n_forced*{0})\"",
-                    5.ToString(_usCulture));
+                var keyFrameArg = string.Format(
+                    CultureInfo.InvariantCulture,
+                    " -force_key_frames \"expr:gte(t,n_forced*{0})\"",
+                    5);
 
                 args += keyFrameArg;
 
@@ -2505,6 +2707,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                     {
                         args += " -copyts";
                     }
+
                     args += " -avoid_negative_ts disabled -start_at_zero";
                 }
 
@@ -2514,7 +2717,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                     args += GetGraphicalSubtitleParam(state, encodingOptions, videoCodec);
                 }
 
-                var qualityParam = GetVideoQualityParam(state, videoCodec, encodingOptions, defaultH264Preset);
+                var qualityParam = GetVideoQualityParam(state, videoCodec, encodingOptions, defaultPreset);
 
                 if (!string.IsNullOrEmpty(qualityParam))
                 {
@@ -2605,39 +2808,22 @@ namespace MediaBrowser.Controller.MediaEncoding
                 }
             }
 
-            var albumCoverInput = string.Empty;
-            var mapArgs = string.Empty;
-            var metadata = string.Empty;
-            var vn = string.Empty;
-
-            var hasArt = !string.IsNullOrEmpty(state.AlbumCoverPath);
-            hasArt = false;
-
-            if (hasArt)
-            {
-                albumCoverInput = " -i \"" + state.AlbumCoverPath + "\"";
-                mapArgs = " -map 0:a -map 1:v -c:1:v copy";
-                metadata = " -metadata:s:v title=\"Album cover\" -metadata:s:v comment=\"Cover(Front)\"";
-            }
-            else
-            {
-                vn = " -vn";
-            }
-
             var threads = GetNumberOfThreads(state, encodingOptions, null);
 
             var inputModifier = GetInputModifier(state, encodingOptions);
 
-            return string.Format("{0} {1}{7}{8} -threads {2}{3} {4} -id3v2_version 3 -write_id3v1 1{6} -y \"{5}\"",
+            return string.Format(
+                CultureInfo.InvariantCulture,
+                "{0} {1}{7}{8} -threads {2}{3} {4} -id3v2_version 3 -write_id3v1 1{6} -y \"{5}\"",
                 inputModifier,
                 GetInputArgument(state, encodingOptions),
                 threads,
-                vn,
-                string.Join(" ", audioTranscodeParams.ToArray()),
+                " -vn",
+                string.Join(" ", audioTranscodeParams),
                 outputPath,
-                metadata,
-                albumCoverInput,
-                mapArgs).Trim();
+                string.Empty,
+                string.Empty,
+                string.Empty).Trim();
         }
 
     }
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingJobOptions.cs b/MediaBrowser.Controller/MediaEncoding/EncodingJobOptions.cs
index be97c75a2..d64feb2f7 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingJobOptions.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingJobOptions.cs
@@ -118,14 +118,14 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// Gets or sets the profile.
         /// </summary>
         /// <value>The profile.</value>
-        [ApiMember(Name = "Profile", Description = "Optional. Specify a specific h264 profile, e.g. main, baseline, high.", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
+        [ApiMember(Name = "Profile", Description = "Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
         public string Profile { get; set; }
 
         /// <summary>
         /// Gets or sets the level.
         /// </summary>
         /// <value>The level.</value>
-        [ApiMember(Name = "Level", Description = "Optional. Specify a level for the h264 profile, e.g. 3, 3.1.", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
+        [ApiMember(Name = "Level", Description = "Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
         public string Level { get; set; }
 
         /// <summary>
@@ -212,7 +212,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// Gets or sets the video codec.
         /// </summary>
         /// <value>The video codec.</value>
-        [ApiMember(Name = "VideoCodec", Description = "Optional. Specify a video codec to encode to, e.g. h264. If omitted the server will auto-select using the url's extension. Options: h264, mpeg4, theora, vpx, wmv.", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
+        [ApiMember(Name = "VideoCodec", Description = "Optional. Specify a video codec to encode to, e.g. h264. If omitted the server will auto-select using the url's extension. Options: h265, h264, mpeg4, theora, vpx, wmv.", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
         public string VideoCodec { get; set; }
 
         public string SubtitleCodec { get; set; }
diff --git a/MediaBrowser.Controller/MediaEncoding/MediaEncoderHelpers.cs b/MediaBrowser.Controller/MediaEncoding/MediaEncoderHelpers.cs
index 7f842c1d0..5cedc3d57 100644
--- a/MediaBrowser.Controller/MediaEncoding/MediaEncoderHelpers.cs
+++ b/MediaBrowser.Controller/MediaEncoding/MediaEncoderHelpers.cs
@@ -1,8 +1,8 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using MediaBrowser.Model.IO;
-using MediaBrowser.Model.MediaInfo;
 
 namespace MediaBrowser.Controller.MediaEncoding
 {
@@ -16,31 +16,26 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// </summary>
         /// <param name="fileSystem">The file system.</param>
         /// <param name="videoPath">The video path.</param>
-        /// <param name="protocol">The protocol.</param>
         /// <param name="isoMount">The iso mount.</param>
         /// <param name="playableStreamFileNames">The playable stream file names.</param>
-        /// <returns>System.String[][].</returns>
-        public static string[] GetInputArgument(IFileSystem fileSystem, string videoPath, MediaProtocol protocol, IIsoMount isoMount, string[] playableStreamFileNames)
+        /// <returns>string[].</returns>
+        public static string[] GetInputArgument(IFileSystem fileSystem, string videoPath, IIsoMount isoMount, IReadOnlyCollection<string> playableStreamFileNames)
         {
-            if (playableStreamFileNames.Length > 0)
+            if (playableStreamFileNames.Count > 0)
             {
                 if (isoMount == null)
                 {
                     return GetPlayableStreamFiles(fileSystem, videoPath, playableStreamFileNames);
                 }
+
                 return GetPlayableStreamFiles(fileSystem, isoMount.MountedPath, playableStreamFileNames);
             }
 
             return new[] { videoPath };
         }
 
-        private static string[] GetPlayableStreamFiles(IFileSystem fileSystem, string rootPath, string[] filenames)
+        private static string[] GetPlayableStreamFiles(IFileSystem fileSystem, string rootPath, IEnumerable<string> filenames)
         {
-            if (filenames.Length == 0)
-            {
-                return new string[] { };
-            }
-
             var allFiles = fileSystem
                 .GetFilePaths(rootPath, true)
                 .ToArray();
diff --git a/MediaBrowser.Controller/Net/AuthenticatedAttribute.cs b/MediaBrowser.Controller/Net/AuthenticatedAttribute.cs
index 64c2294e3..29fb81e32 100644
--- a/MediaBrowser.Controller/Net/AuthenticatedAttribute.cs
+++ b/MediaBrowser.Controller/Net/AuthenticatedAttribute.cs
@@ -1,5 +1,6 @@
 using System;
 using MediaBrowser.Model.Services;
+using Microsoft.AspNetCore.Http;
 
 namespace MediaBrowser.Controller.Net
 {
@@ -33,7 +34,7 @@ namespace MediaBrowser.Controller.Net
         /// <param name="request">The http request wrapper</param>
         /// <param name="response">The http response wrapper</param>
         /// <param name="requestDto">The request DTO</param>
-        public void RequestFilter(IRequest request, IResponse response, object requestDto)
+        public void RequestFilter(IRequest request, HttpResponse response, object requestDto)
         {
             AuthService.Authenticate(request, this);
         }
diff --git a/MediaBrowser.Controller/Playlists/Playlist.cs b/MediaBrowser.Controller/Playlists/Playlist.cs
index e83260725..b45043f92 100644
--- a/MediaBrowser.Controller/Playlists/Playlist.cs
+++ b/MediaBrowser.Controller/Playlists/Playlist.cs
@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Controller.Dto;
@@ -9,7 +11,6 @@ using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Querying;
-using MediaBrowser.Model.Serialization;
 
 namespace MediaBrowser.Controller.Playlists
 {
@@ -33,7 +34,7 @@ namespace MediaBrowser.Controller.Playlists
             Shares = Array.Empty<Share>();
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public bool IsFile => IsPlaylistFile(Path);
 
         public static bool IsPlaylistFile(string path)
@@ -41,7 +42,7 @@ namespace MediaBrowser.Controller.Playlists
             return System.IO.Path.HasExtension(path);
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string ContainingFolderPath
         {
             get
@@ -57,19 +58,19 @@ namespace MediaBrowser.Controller.Playlists
             }
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         protected override bool FilterLinkedChildrenPerUser => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsInheritedParentImages => false;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsPlayedStatus => string.Equals(MediaType, "Video", StringComparison.OrdinalIgnoreCase);
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool AlwaysScanInternalMetadataPath => true;
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool SupportsCumulativeRunTimeTicks => true;
 
         public override double GetDefaultPrimaryImageAspectRatio()
@@ -192,12 +193,12 @@ namespace MediaBrowser.Controller.Playlists
             return new[] { item };
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override bool IsPreSorted => true;
 
         public string PlaylistMediaType { get; set; }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         public override string MediaType => PlaylistMediaType;
 
         public void SetMediaType(string value)
@@ -205,7 +206,7 @@ namespace MediaBrowser.Controller.Playlists
             PlaylistMediaType = value;
         }
 
-        [IgnoreDataMember]
+        [JsonIgnore]
         private bool IsSharedItem
         {
             get
@@ -239,7 +240,7 @@ namespace MediaBrowser.Controller.Playlists
                 return base.IsVisible(user);
             }
 
-            var userId = user.Id.ToString("N");
+            var userId = user.Id.ToString("N", CultureInfo.InvariantCulture);
             foreach (var share in shares)
             {
                 if (string.Equals(share.UserId, userId, StringComparison.OrdinalIgnoreCase))
diff --git a/MediaBrowser.Controller/Providers/AlbumInfo.cs b/MediaBrowser.Controller/Providers/AlbumInfo.cs
index b0b443fc0..ac6b86c1d 100644
--- a/MediaBrowser.Controller/Providers/AlbumInfo.cs
+++ b/MediaBrowser.Controller/Providers/AlbumInfo.cs
@@ -9,7 +9,7 @@ namespace MediaBrowser.Controller.Providers
         /// Gets or sets the album artist.
         /// </summary>
         /// <value>The album artist.</value>
-        public string[] AlbumArtists { get; set; }
+        public IReadOnlyList<string> AlbumArtists { get; set; }
 
         /// <summary>
         /// Gets or sets the artist provider ids.
diff --git a/MediaBrowser.Controller/Providers/MetadataResult.cs b/MediaBrowser.Controller/Providers/MetadataResult.cs
index f4b915c06..ebff81b7f 100644
--- a/MediaBrowser.Controller/Providers/MetadataResult.cs
+++ b/MediaBrowser.Controller/Providers/MetadataResult.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using MediaBrowser.Controller.Entities;
 
 namespace MediaBrowser.Controller.Providers
@@ -55,7 +56,7 @@ namespace MediaBrowser.Controller.Providers
 
             foreach (var i in UserDataList)
             {
-                if (string.Equals(userId, i.UserId.ToString("N"), StringComparison.OrdinalIgnoreCase))
+                if (string.Equals(userId, i.UserId.ToString("N", CultureInfo.InvariantCulture), StringComparison.OrdinalIgnoreCase))
                 {
                     userData = i;
                 }
diff --git a/MediaBrowser.Controller/Providers/MusicVideoInfo.cs b/MediaBrowser.Controller/Providers/MusicVideoInfo.cs
index 194b26484..9835351fc 100644
--- a/MediaBrowser.Controller/Providers/MusicVideoInfo.cs
+++ b/MediaBrowser.Controller/Providers/MusicVideoInfo.cs
@@ -1,7 +1,9 @@
+using System.Collections.Generic;
+
 namespace MediaBrowser.Controller.Providers
 {
     public class MusicVideoInfo : ItemLookupInfo
     {
-        public string[] Artists { get; set; }
+        public IReadOnlyList<string> Artists { get; set; }
     }
 }
diff --git a/MediaBrowser.Controller/Providers/SongInfo.cs b/MediaBrowser.Controller/Providers/SongInfo.cs
index 61e950130..50615b0bd 100644
--- a/MediaBrowser.Controller/Providers/SongInfo.cs
+++ b/MediaBrowser.Controller/Providers/SongInfo.cs
@@ -1,12 +1,15 @@
 using System;
+using System.Collections.Generic;
 
 namespace MediaBrowser.Controller.Providers
 {
     public class SongInfo : ItemLookupInfo
     {
-        public string[] AlbumArtists { get; set; }
+        public IReadOnlyList<string> AlbumArtists { get; set; }
+
         public string Album { get; set; }
-        public string[] Artists { get; set; }
+
+        public IReadOnlyList<string> Artists { get; set; }
 
         public SongInfo()
         {
diff --git a/MediaBrowser.Controller/Session/SessionInfo.cs b/MediaBrowser.Controller/Session/SessionInfo.cs
index f0e81e8e7..acda6a416 100644
--- a/MediaBrowser.Controller/Session/SessionInfo.cs
+++ b/MediaBrowser.Controller/Session/SessionInfo.cs
@@ -1,9 +1,9 @@
 using System;
 using System.Linq;
+using System.Text.Json.Serialization;
 using System.Threading;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Model.Dto;
-using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Session;
 using Microsoft.Extensions.Logging;
 
@@ -123,7 +123,7 @@ namespace MediaBrowser.Controller.Session
         /// Gets or sets the session controller.
         /// </summary>
         /// <value>The session controller.</value>
-        [IgnoreDataMember]
+        [JsonIgnore]
         public ISessionController[] SessionControllers { get; set; }
 
         /// <summary>