Merge remote-tracking branch 'upstream/master' into dotnet-5

21 files changed, 161 insertions, 354 deletions

diff --git a/Jellyfin.Api/Controllers/AlbumsController.cs b/Jellyfin.Api/Controllers/AlbumsController.cs
deleted file mode 100644
index 357f646a2..000000000
--- a/Jellyfin.Api/Controllers/AlbumsController.cs
+++ /dev/null
@@ -1,135 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
-using System.Linq;
-using Jellyfin.Api.Extensions;
-using Jellyfin.Api.Helpers;
-using MediaBrowser.Controller.Dto;
-using MediaBrowser.Controller.Entities;
-using MediaBrowser.Controller.Entities.Audio;
-using MediaBrowser.Controller.Library;
-using MediaBrowser.Model.Dto;
-using MediaBrowser.Model.Querying;
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Mvc;
-
-namespace Jellyfin.Api.Controllers
-{
-    /// <summary>
-    /// The albums controller.
-    /// </summary>
-    [Route("")]
-    public class AlbumsController : BaseJellyfinApiController
-    {
-        private readonly IUserManager _userManager;
-        private readonly ILibraryManager _libraryManager;
-        private readonly IDtoService _dtoService;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="AlbumsController"/> class.
-        /// </summary>
-        /// <param name="userManager">Instance of the <see cref="IUserManager"/> interface.</param>
-        /// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param>
-        /// <param name="dtoService">Instance of the <see cref="IDtoService"/> interface.</param>
-        public AlbumsController(
-            IUserManager userManager,
-            ILibraryManager libraryManager,
-            IDtoService dtoService)
-        {
-            _userManager = userManager;
-            _libraryManager = libraryManager;
-            _dtoService = dtoService;
-        }
-
-        /// <summary>
-        /// Finds albums similar to a given album.
-        /// </summary>
-        /// <param name="albumId">The album id.</param>
-        /// <param name="userId">Optional. Filter by user id, and attach user data.</param>
-        /// <param name="excludeArtistIds">Optional. Ids of artists to exclude.</param>
-        /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <response code="200">Similar albums returned.</response>
-        /// <returns>A <see cref="QueryResult{BaseItemDto}"/> with similar albums.</returns>
-        [HttpGet("Albums/{albumId}/Similar")]
-        [ProducesResponseType(StatusCodes.Status200OK)]
-        public ActionResult<QueryResult<BaseItemDto>> GetSimilarAlbums(
-            [FromRoute, Required] string albumId,
-            [FromQuery] Guid? userId,
-            [FromQuery] string? excludeArtistIds,
-            [FromQuery] int? limit)
-        {
-            var dtoOptions = new DtoOptions().AddClientFields(Request);
-
-            return SimilarItemsHelper.GetSimilarItemsResult(
-                dtoOptions,
-                _userManager,
-                _libraryManager,
-                _dtoService,
-                userId,
-                albumId,
-                excludeArtistIds,
-                limit,
-                new[] { typeof(MusicAlbum) },
-                GetAlbumSimilarityScore);
-        }
-
-        /// <summary>
-        /// Finds artists similar to a given artist.
-        /// </summary>
-        /// <param name="artistId">The artist id.</param>
-        /// <param name="userId">Optional. Filter by user id, and attach user data.</param>
-        /// <param name="excludeArtistIds">Optional. Ids of artists to exclude.</param>
-        /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <response code="200">Similar artists returned.</response>
-        /// <returns>A <see cref="QueryResult{BaseItemDto}"/> with similar artists.</returns>
-        [HttpGet("Artists/{artistId}/Similar")]
-        [ProducesResponseType(StatusCodes.Status200OK)]
-        public ActionResult<QueryResult<BaseItemDto>> GetSimilarArtists(
-            [FromRoute, Required] string artistId,
-            [FromQuery] Guid? userId,
-            [FromQuery] string? excludeArtistIds,
-            [FromQuery] int? limit)
-        {
-            var dtoOptions = new DtoOptions().AddClientFields(Request);
-
-            return SimilarItemsHelper.GetSimilarItemsResult(
-                dtoOptions,
-                _userManager,
-                _libraryManager,
-                _dtoService,
-                userId,
-                artistId,
-                excludeArtistIds,
-                limit,
-                new[] { typeof(MusicArtist) },
-                SimilarItemsHelper.GetSimiliarityScore);
-        }
-
-        /// <summary>
-        /// Gets a similairty score of two albums.
-        /// </summary>
-        /// <param name="item1">The first item.</param>
-        /// <param name="item1People">The item1 people.</param>
-        /// <param name="allPeople">All people.</param>
-        /// <param name="item2">The second item.</param>
-        /// <returns>System.Int32.</returns>
-        private int GetAlbumSimilarityScore(BaseItem item1, List<PersonInfo> item1People, List<PersonInfo> allPeople, BaseItem item2)
-        {
-            var points = SimilarItemsHelper.GetSimiliarityScore(item1, item1People, allPeople, item2);
-
-            var album1 = (MusicAlbum)item1;
-            var album2 = (MusicAlbum)item2;
-
-            var artists1 = album1
-                .GetAllArtists()
-                .DistinctNames()
-                .ToList();
-
-            var artists2 = new HashSet<string>(
-                album2.GetAllArtists().DistinctNames(),
-                StringComparer.OrdinalIgnoreCase);
-
-            return points + artists1.Where(artists2.Contains).Sum(i => 5);
-        }
-    }
-}
diff --git a/Jellyfin.Api/Controllers/ArtistsController.cs b/Jellyfin.Api/Controllers/ArtistsController.cs
index a35d7a556..9bad206e0 100644
--- a/Jellyfin.Api/Controllers/ArtistsController.cs
+++ b/Jellyfin.Api/Controllers/ArtistsController.cs
@@ -53,7 +53,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="limit">Optional. The maximum number of records to return.</param>
         /// <param name="searchTerm">Optional. Search term.</param>
         /// <param name="parentId">Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="excludeItemTypes">Optional. If specified, results will be filtered out based on item type. This allows multiple, comma delimited.</param>
         /// <param name="includeItemTypes">Optional. If specified, results will be filtered based on item type. This allows multiple, comma delimited.</param>
         /// <param name="filters">Optional. Specify additional filters to apply.</param>
@@ -88,7 +88,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? limit,
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? excludeItemTypes,
             [FromQuery] string? includeItemTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
@@ -114,8 +114,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableImages = true,
             [FromQuery] bool enableTotalRecordCount = true)
         {
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
@@ -262,7 +261,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="limit">Optional. The maximum number of records to return.</param>
         /// <param name="searchTerm">Optional. Search term.</param>
         /// <param name="parentId">Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="excludeItemTypes">Optional. If specified, results will be filtered out based on item type. This allows multiple, comma delimited.</param>
         /// <param name="includeItemTypes">Optional. If specified, results will be filtered based on item type. This allows multiple, comma delimited.</param>
         /// <param name="filters">Optional. Specify additional filters to apply.</param>
@@ -297,7 +296,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? limit,
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? excludeItemTypes,
             [FromQuery] string? includeItemTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
@@ -323,8 +322,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableImages = true,
             [FromQuery] bool enableTotalRecordCount = true)
         {
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
diff --git a/Jellyfin.Api/Controllers/ChannelsController.cs b/Jellyfin.Api/Controllers/ChannelsController.cs
index 20fc96ba8..ec9d7cdce 100644
--- a/Jellyfin.Api/Controllers/ChannelsController.cs
+++ b/Jellyfin.Api/Controllers/ChannelsController.cs
@@ -108,7 +108,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="sortOrder">Optional. Sort Order - Ascending,Descending.</param>
         /// <param name="filters">Optional. Specify additional filters to apply.</param>
         /// <param name="sortBy">Optional. Specify one or more sort orders, comma delimited. Options: Album, AlbumArtist, Artist, Budget, CommunityRating, CriticRating, DateCreated, DatePlayed, PlayCount, PremiereDate, ProductionYear, SortName, Random, Revenue, Runtime.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <response code="200">Channel items returned.</response>
         /// <returns>
         /// A <see cref="Task"/> representing the request to get the channel items.
@@ -124,7 +124,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? sortOrder,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
             [FromQuery] string? sortBy,
-            [FromQuery] string? fields)
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields)
         {
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
@@ -137,8 +137,7 @@ namespace Jellyfin.Api.Controllers
                 ChannelIds = new[] { channelId },
                 ParentId = folderId ?? Guid.Empty,
                 OrderBy = RequestHelpers.GetOrderBy(sortBy, sortOrder),
-                DtoOptions = new DtoOptions()
-                    .AddItemFields(fields)
+                DtoOptions = new DtoOptions { Fields = fields }
             };
 
             foreach (var filter in filters)
@@ -185,7 +184,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="startIndex">Optional. The record index to start at. All items with a lower index will be dropped from the results.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
         /// <param name="filters">Optional. Specify additional filters to apply.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="channelIds">Optional. Specify one or more channel id's, comma delimited.</param>
         /// <response code="200">Latest channel items returned.</response>
         /// <returns>
@@ -198,7 +197,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? startIndex,
             [FromQuery] int? limit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? channelIds)
         {
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
@@ -214,8 +213,7 @@ namespace Jellyfin.Api.Controllers
                     .Where(i => !string.IsNullOrWhiteSpace(i))
                     .Select(i => new Guid(i))
                     .ToArray(),
-                DtoOptions = new DtoOptions()
-                    .AddItemFields(fields)
+                DtoOptions = new DtoOptions { Fields = fields }
             };
 
             foreach (var filter in filters)
diff --git a/Jellyfin.Api/Controllers/FilterController.cs b/Jellyfin.Api/Controllers/FilterController.cs
index 2a567c846..008bb58d1 100644
--- a/Jellyfin.Api/Controllers/FilterController.cs
+++ b/Jellyfin.Api/Controllers/FilterController.cs
@@ -78,8 +78,8 @@ namespace Jellyfin.Api.Controllers
             var query = new InternalItemsQuery
             {
                 User = user,
-                MediaTypes = (mediaTypes ?? string.Empty).Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries),
-                IncludeItemTypes = (includeItemTypes ?? string.Empty).Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries),
+                MediaTypes = (mediaTypes ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries),
+                IncludeItemTypes = (includeItemTypes ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries),
                 Recursive = true,
                 EnableTotalRecordCount = false,
                 DtoOptions = new DtoOptions
@@ -168,7 +168,7 @@ namespace Jellyfin.Api.Controllers
             var genreQuery = new InternalItemsQuery(user)
             {
                 IncludeItemTypes =
-                    (includeItemTypes ?? string.Empty).Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries),
+                    (includeItemTypes ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries),
                 DtoOptions = new DtoOptions
                 {
                     Fields = Array.Empty<ItemFields>(),
diff --git a/Jellyfin.Api/Controllers/GenresController.cs b/Jellyfin.Api/Controllers/GenresController.cs
index 9c009d784..9c222135d 100644
--- a/Jellyfin.Api/Controllers/GenresController.cs
+++ b/Jellyfin.Api/Controllers/GenresController.cs
@@ -52,7 +52,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="limit">Optional. The maximum number of records to return.</param>
         /// <param name="searchTerm">The search term.</param>
         /// <param name="parentId">Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="excludeItemTypes">Optional. If specified, results will be filtered out based on item type. This allows multiple, comma delimited.</param>
         /// <param name="includeItemTypes">Optional. If specified, results will be filtered in based on item type. This allows multiple, comma delimited.</param>
         /// <param name="isFavorite">Optional filter by items that are marked as favorite, or not.</param>
@@ -73,7 +73,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? limit,
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? excludeItemTypes,
             [FromQuery] string? includeItemTypes,
             [FromQuery] bool? isFavorite,
@@ -86,8 +86,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableImages = true,
             [FromQuery] bool enableTotalRecordCount = true)
         {
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, false, imageTypeLimit, enableImageTypes);
 
diff --git a/Jellyfin.Api/Controllers/InstantMixController.cs b/Jellyfin.Api/Controllers/InstantMixController.cs
index 2f342d0a8..d17a26db4 100644
--- a/Jellyfin.Api/Controllers/InstantMixController.cs
+++ b/Jellyfin.Api/Controllers/InstantMixController.cs
@@ -56,7 +56,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="id">The item id.</param>
         /// <param name="userId">Optional. Filter by user id, and attach user data.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines, TrailerUrls.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
@@ -69,7 +69,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] Guid id,
             [FromQuery] Guid? userId,
             [FromQuery] int? limit,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableImages,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -79,8 +79,7 @@ namespace Jellyfin.Api.Controllers
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
                 : null;
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes!);
             var items = _musicManager.GetInstantMixFromItem(item, user, dtoOptions);
@@ -93,7 +92,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="id">The item id.</param>
         /// <param name="userId">Optional. Filter by user id, and attach user data.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines, TrailerUrls.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
@@ -106,7 +105,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] Guid id,
             [FromQuery] Guid? userId,
             [FromQuery] int? limit,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableImages,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -116,8 +115,7 @@ namespace Jellyfin.Api.Controllers
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
                 : null;
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes!);
             var items = _musicManager.GetInstantMixFromItem(album, user, dtoOptions);
@@ -130,7 +128,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="id">The item id.</param>
         /// <param name="userId">Optional. Filter by user id, and attach user data.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines, TrailerUrls.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
@@ -143,7 +141,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] Guid id,
             [FromQuery] Guid? userId,
             [FromQuery] int? limit,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableImages,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -153,8 +151,7 @@ namespace Jellyfin.Api.Controllers
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
                 : null;
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes!);
             var items = _musicManager.GetInstantMixFromItem(playlist, user, dtoOptions);
@@ -167,7 +164,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="name">The genre name.</param>
         /// <param name="userId">Optional. Filter by user id, and attach user data.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines, TrailerUrls.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
@@ -180,7 +177,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] string name,
             [FromQuery] Guid? userId,
             [FromQuery] int? limit,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableImages,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -189,8 +186,7 @@ namespace Jellyfin.Api.Controllers
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
                 : null;
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes!);
             var items = _musicManager.GetInstantMixFromGenres(new[] { name }, user, dtoOptions);
@@ -203,7 +199,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="id">The item id.</param>
         /// <param name="userId">Optional. Filter by user id, and attach user data.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines, TrailerUrls.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
@@ -216,7 +212,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] Guid id,
             [FromQuery] Guid? userId,
             [FromQuery] int? limit,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableImages,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -226,8 +222,7 @@ namespace Jellyfin.Api.Controllers
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
                 : null;
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes!);
             var items = _musicManager.GetInstantMixFromItem(item, user, dtoOptions);
@@ -240,7 +235,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="id">The item id.</param>
         /// <param name="userId">Optional. Filter by user id, and attach user data.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines, TrailerUrls.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
@@ -253,7 +248,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] Guid id,
             [FromQuery] Guid? userId,
             [FromQuery] int? limit,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableImages,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -263,8 +258,7 @@ namespace Jellyfin.Api.Controllers
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
                 : null;
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes!);
             var items = _musicManager.GetInstantMixFromItem(item, user, dtoOptions);
@@ -277,7 +271,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="id">The item id.</param>
         /// <param name="userId">Optional. Filter by user id, and attach user data.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines, TrailerUrls.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
@@ -290,7 +284,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] Guid id,
             [FromQuery] Guid? userId,
             [FromQuery] int? limit,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableImages,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -300,8 +294,7 @@ namespace Jellyfin.Api.Controllers
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
                 : null;
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes!);
             var items = _musicManager.GetInstantMixFromItem(item, user, dtoOptions);
diff --git a/Jellyfin.Api/Controllers/ItemsController.cs b/Jellyfin.Api/Controllers/ItemsController.cs
index adc95f757..d8d371ebc 100644
--- a/Jellyfin.Api/Controllers/ItemsController.cs
+++ b/Jellyfin.Api/Controllers/ItemsController.cs
@@ -180,7 +180,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? searchTerm,
             [FromQuery] string? sortOrder,
             [FromQuery] string? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? excludeItemTypes,
             [FromQuery] string? includeItemTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
@@ -234,8 +234,7 @@ namespace Jellyfin.Api.Controllers
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
                 : null;
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
@@ -533,7 +532,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? limit,
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? mediaTypes,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -545,8 +544,7 @@ namespace Jellyfin.Api.Controllers
         {
             var user = _userManager.GetUserById(userId);
             var parentIdGuid = string.IsNullOrWhiteSpace(parentId) ? Guid.Empty : new Guid(parentId);
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
diff --git a/Jellyfin.Api/Controllers/LibraryController.cs b/Jellyfin.Api/Controllers/LibraryController.cs
index 60bbc5022..1b115d800 100644
--- a/Jellyfin.Api/Controllers/LibraryController.cs
+++ b/Jellyfin.Api/Controllers/LibraryController.cs
@@ -12,6 +12,7 @@ using Jellyfin.Api.Attributes;
 using Jellyfin.Api.Constants;
 using Jellyfin.Api.Extensions;
 using Jellyfin.Api.Helpers;
+using Jellyfin.Api.ModelBinders;
 using Jellyfin.Api.Models.LibraryDtos;
 using Jellyfin.Data.Entities;
 using MediaBrowser.Common.Progress;
@@ -680,12 +681,12 @@ namespace Jellyfin.Api.Controllers
         /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines, TrailerUrls.</param>
         /// <response code="200">Similar items returned.</response>
         /// <returns>A <see cref="QueryResult{BaseItemDto}"/> containing the similar items.</returns>
-        [HttpGet("Artists/{itemId}/Similar", Name = "GetSimilarArtists2")]
+        [HttpGet("Artists/{itemId}/Similar", Name = "GetSimilarArtists")]
         [HttpGet("Items/{itemId}/Similar")]
-        [HttpGet("Albums/{itemId}/Similar", Name = "GetSimilarAlbums2")]
-        [HttpGet("Shows/{itemId}/Similar", Name = "GetSimilarShows2")]
-        [HttpGet("Movies/{itemId}/Similar", Name = "GetSimilarMovies2")]
-        [HttpGet("Trailers/{itemId}/Similar", Name = "GetSimilarTrailers2")]
+        [HttpGet("Albums/{itemId}/Similar", Name = "GetSimilarAlbums")]
+        [HttpGet("Shows/{itemId}/Similar", Name = "GetSimilarShows")]
+        [HttpGet("Movies/{itemId}/Similar", Name = "GetSimilarMovies")]
+        [HttpGet("Trailers/{itemId}/Similar", Name = "GetSimilarTrailers")]
         [Authorize(Policy = Policies.DefaultAuthorization)]
         [ProducesResponseType(StatusCodes.Status200OK)]
         public ActionResult<QueryResult<BaseItemDto>> GetSimilarItems(
@@ -693,7 +694,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? excludeArtistIds,
             [FromQuery] Guid? userId,
             [FromQuery] int? limit,
-            [FromQuery] string? fields)
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields)
         {
             var item = itemId.Equals(Guid.Empty)
                 ? (!userId.Equals(Guid.Empty)
@@ -701,33 +702,71 @@ namespace Jellyfin.Api.Controllers
                     : _libraryManager.RootFolder)
                 : _libraryManager.GetItemById(itemId);
 
+            if (item is Episode || (item is IItemByName && !(item is MusicArtist)))
+            {
+                return new QueryResult<BaseItemDto>();
+            }
+
+            var user = userId.HasValue && !userId.Equals(Guid.Empty)
+                ? _userManager.GetUserById(userId.Value)
+                : null;
+            var dtoOptions = new DtoOptions { Fields = fields }
+                .AddClientFields(Request);
+
             var program = item as IHasProgramAttributes;
-            var isMovie = item is MediaBrowser.Controller.Entities.Movies.Movie || (program != null && program.IsMovie) || item is Trailer;
-            if (program != null && program.IsSeries)
+            bool? isMovie = item is Movie || (program != null && program.IsMovie) || item is Trailer;
+            bool? isSeries = item is Series || (program != null && program.IsSeries);
+
+            var includeItemTypes = new List<string>();
+            if (isMovie.Value)
             {
-                return GetSimilarItemsResult(
-                    item,
-                    excludeArtistIds,
-                    userId,
-                    limit,
-                    fields,
-                    new[] { nameof(Series) },
-                    false);
+                includeItemTypes.Add(nameof(Movie));
+                if (_serverConfigurationManager.Configuration.EnableExternalContentInSuggestions)
+                {
+                    includeItemTypes.Add(nameof(Trailer));
+                    includeItemTypes.Add(nameof(LiveTvProgram));
+                }
+            }
+            else if (isSeries.Value)
+            {
+                includeItemTypes.Add(nameof(Series));
+            }
+            else
+            {
+                // For non series and movie types these columns are typically null
+                isSeries = null;
+                isMovie = null;
+                includeItemTypes.Add(item.GetType().Name);
             }
 
-            if (item is MediaBrowser.Controller.Entities.TV.Episode || (item is IItemByName && !(item is MusicArtist)))
+            var query = new InternalItemsQuery(user)
             {
-                return new QueryResult<BaseItemDto>();
+                Limit = limit,
+                IncludeItemTypes = includeItemTypes.ToArray(),
+                IsMovie = isMovie,
+                IsSeries = isSeries,
+                SimilarTo = item,
+                DtoOptions = dtoOptions,
+                EnableTotalRecordCount = !isMovie ?? true,
+                EnableGroupByMetadataKey = isMovie ?? false,
+                MinSimilarityScore = 2 // A remnant from album/artist scoring
+            };
+
+            // ExcludeArtistIds
+            if (!string.IsNullOrEmpty(excludeArtistIds))
+            {
+                query.ExcludeArtistIds = RequestHelpers.GetGuids(excludeArtistIds);
             }
 
-            return GetSimilarItemsResult(
-                item,
-                excludeArtistIds,
-                userId,
-                limit,
-                fields,
-                new[] { item.GetType().Name },
-                isMovie);
+            List<BaseItem> itemsResult = _libraryManager.GetItemList(query);
+
+            var returnList = _dtoService.GetBaseItemDtos(itemsResult, dtoOptions, user);
+
+            return new QueryResult<BaseItemDto>
+            {
+                Items = returnList,
+                TotalRecordCount = itemsResult.Count
+            };
         }
 
         /// <summary>
@@ -880,75 +919,6 @@ namespace Jellyfin.Api.Controllers
             }
         }
 
-        private QueryResult<BaseItemDto> GetSimilarItemsResult(
-            BaseItem item,
-            string? excludeArtistIds,
-            Guid? userId,
-            int? limit,
-            string? fields,
-            string[] includeItemTypes,
-            bool isMovie)
-        {
-            var user = userId.HasValue && !userId.Equals(Guid.Empty)
-                ? _userManager.GetUserById(userId.Value)
-                : null;
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
-                .AddClientFields(Request);
-
-            var query = new InternalItemsQuery(user)
-            {
-                Limit = limit,
-                IncludeItemTypes = includeItemTypes,
-                IsMovie = isMovie,
-                SimilarTo = item,
-                DtoOptions = dtoOptions,
-                EnableTotalRecordCount = !isMovie,
-                EnableGroupByMetadataKey = isMovie
-            };
-
-            // ExcludeArtistIds
-            if (!string.IsNullOrEmpty(excludeArtistIds))
-            {
-                query.ExcludeArtistIds = RequestHelpers.GetGuids(excludeArtistIds);
-            }
-
-            List<BaseItem> itemsResult;
-
-            if (isMovie)
-            {
-                var itemTypes = new List<string> { nameof(MediaBrowser.Controller.Entities.Movies.Movie) };
-                if (_serverConfigurationManager.Configuration.EnableExternalContentInSuggestions)
-                {
-                    itemTypes.Add(nameof(Trailer));
-                    itemTypes.Add(nameof(LiveTvProgram));
-                }
-
-                query.IncludeItemTypes = itemTypes.ToArray();
-                itemsResult = _libraryManager.GetArtists(query).Items.Select(i => i.Item1).ToList();
-            }
-            else if (item is MusicArtist)
-            {
-                query.IncludeItemTypes = Array.Empty<string>();
-
-                itemsResult = _libraryManager.GetArtists(query).Items.Select(i => i.Item1).ToList();
-            }
-            else
-            {
-                itemsResult = _libraryManager.GetItemList(query);
-            }
-
-            var returnList = _dtoService.GetBaseItemDtos(itemsResult, dtoOptions, user);
-
-            var result = new QueryResult<BaseItemDto>
-            {
-                Items = returnList,
-                TotalRecordCount = itemsResult.Count
-            };
-
-            return result;
-        }
-
         private static string[] GetRepresentativeItemTypes(string? contentType)
         {
             return contentType switch
diff --git a/Jellyfin.Api/Controllers/LiveTvController.cs b/Jellyfin.Api/Controllers/LiveTvController.cs
index 384a48705..29c0f1df4 100644
--- a/Jellyfin.Api/Controllers/LiveTvController.cs
+++ b/Jellyfin.Api/Controllers/LiveTvController.cs
@@ -119,7 +119,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
         /// <param name="enableImageTypes">"Optional. The image types to include in the output.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="sortBy">Optional. Key to sort by.</param>
         /// <param name="sortOrder">Optional. Sort order.</param>
@@ -148,15 +148,14 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableImages,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableUserData,
             [FromQuery] string? sortBy,
             [FromQuery] SortOrder? sortOrder,
             [FromQuery] bool enableFavoriteSorting = false,
             [FromQuery] bool addCurrentProgram = true)
         {
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
@@ -240,7 +239,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
         /// <param name="enableImageTypes">Optional. The image types to include in the output.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="isMovie">Optional. Filter for movies.</param>
         /// <param name="isSeries">Optional. Filter for series.</param>
@@ -265,7 +264,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableImages,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableUserData,
             [FromQuery] bool? isMovie,
             [FromQuery] bool? isSeries,
@@ -275,8 +274,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? isLibraryItem,
             [FromQuery] bool enableTotalRecordCount = true)
         {
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
@@ -297,7 +295,7 @@ namespace Jellyfin.Api.Controllers
                 IsKids = isKids,
                 IsSports = isSports,
                 IsLibraryItem = isLibraryItem,
-                Fields = RequestHelpers.GetItemFields(fields),
+                Fields = fields,
                 ImageTypeLimit = imageTypeLimit,
                 EnableImages = enableImages
             }, dtoOptions);
@@ -317,7 +315,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
         /// <param name="enableImageTypes">Optional. The image types to include in the output.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="enableTotalRecordCount">Optional. Return total record count.</param>
         /// <response code="200">Live tv recordings returned.</response>
@@ -352,7 +350,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableImages,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableUserData,
             [FromQuery] bool enableTotalRecordCount = true)
         {
@@ -531,7 +529,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="seriesTimerId">Optional. Filter by series timer id.</param>
         /// <param name="librarySeriesId">Optional. Filter by library series id.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableTotalRecordCount">Retrieve total record count.</param>
         /// <response code="200">Live tv epgs returned.</response>
         /// <returns>
@@ -566,7 +564,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableUserData,
             [FromQuery] string? seriesTimerId,
             [FromQuery] Guid? librarySeriesId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool enableTotalRecordCount = true)
         {
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
@@ -607,8 +605,7 @@ namespace Jellyfin.Api.Controllers
                 }
             }
 
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
             return await _liveTvManager.GetPrograms(query, dtoOptions, CancellationToken.None).ConfigureAwait(false);
@@ -663,8 +660,7 @@ namespace Jellyfin.Api.Controllers
                 }
             }
 
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(body.Fields)
+            var dtoOptions = new DtoOptions { Fields = body.Fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(body.EnableImages, body.EnableUserData, body.ImageTypeLimit, body.EnableImageTypes);
             return await _liveTvManager.GetPrograms(query, dtoOptions, CancellationToken.None).ConfigureAwait(false);
@@ -686,7 +682,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
         /// <param name="enableImageTypes">Optional. The image types to include in the output.</param>
         /// <param name="genreIds">The genres to return guide information for.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableUserData">Optional. include user data.</param>
         /// <param name="enableTotalRecordCount">Retrieve total record count.</param>
         /// <response code="200">Recommended epgs returned.</response>
@@ -708,7 +704,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
             [FromQuery] string? genreIds,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableUserData,
             [FromQuery] bool enableTotalRecordCount = true)
         {
@@ -730,8 +726,7 @@ namespace Jellyfin.Api.Controllers
                 GenreIds = RequestHelpers.GetGuids(genreIds)
             };
 
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
             return _liveTvManager.GetRecommendedPrograms(query, dtoOptions, CancellationToken.None);
diff --git a/Jellyfin.Api/Controllers/MoviesController.cs b/Jellyfin.Api/Controllers/MoviesController.cs
index afb536e74..ebc148fe5 100644
--- a/Jellyfin.Api/Controllers/MoviesController.cs
+++ b/Jellyfin.Api/Controllers/MoviesController.cs
@@ -4,6 +4,7 @@ using System.Globalization;
 using System.Linq;
 using Jellyfin.Api.Constants;
 using Jellyfin.Api.Extensions;
+using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
 using MediaBrowser.Common.Extensions;
@@ -65,15 +66,14 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<IEnumerable<RecommendationDto>> GetMovieRecommendations(
             [FromQuery] Guid? userId,
             [FromQuery] string? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] int categoryLimit = 5,
             [FromQuery] int itemLimit = 8)
         {
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
                 : null;
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request);
 
             var categories = new List<RecommendationDto>();
diff --git a/Jellyfin.Api/Controllers/MusicGenresController.cs b/Jellyfin.Api/Controllers/MusicGenresController.cs
index 989c383fd..229d9ff02 100644
--- a/Jellyfin.Api/Controllers/MusicGenresController.cs
+++ b/Jellyfin.Api/Controllers/MusicGenresController.cs
@@ -52,7 +52,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="limit">Optional. The maximum number of records to return.</param>
         /// <param name="searchTerm">The search term.</param>
         /// <param name="parentId">Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="excludeItemTypes">Optional. If specified, results will be filtered out based on item type. This allows multiple, comma delimited.</param>
         /// <param name="includeItemTypes">Optional. If specified, results will be filtered in based on item type. This allows multiple, comma delimited.</param>
         /// <param name="isFavorite">Optional filter by items that are marked as favorite, or not.</param>
@@ -73,7 +73,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? limit,
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? excludeItemTypes,
             [FromQuery] string? includeItemTypes,
             [FromQuery] bool? isFavorite,
@@ -86,8 +86,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableImages = true,
             [FromQuery] bool enableTotalRecordCount = true)
         {
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, false, imageTypeLimit, enableImageTypes);
 
diff --git a/Jellyfin.Api/Controllers/PackageController.cs b/Jellyfin.Api/Controllers/PackageController.cs
index a104af4e6..1f797d6bc 100644
--- a/Jellyfin.Api/Controllers/PackageController.cs
+++ b/Jellyfin.Api/Controllers/PackageController.cs
@@ -154,12 +154,13 @@ namespace Jellyfin.Api.Controllers
         /// <param name="repositoryInfos">The list of package repositories.</param>
         /// <response code="204">Package repositories saved.</response>
         /// <returns>A <see cref="NoContentResult"/>.</returns>
-        [HttpOptions("Repositories")]
+        [HttpPost("Repositories")]
         [Authorize(Policy = Policies.DefaultAuthorization)]
         [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult SetRepositories([FromBody] List<RepositoryInfo> repositoryInfos)
         {
             _serverConfigurationManager.Configuration.PluginRepositories = repositoryInfos;
+            _serverConfigurationManager.SaveConfiguration();
             return NoContent();
         }
     }
diff --git a/Jellyfin.Api/Controllers/PersonsController.cs b/Jellyfin.Api/Controllers/PersonsController.cs
index 80395950c..6ac3e6417 100644
--- a/Jellyfin.Api/Controllers/PersonsController.cs
+++ b/Jellyfin.Api/Controllers/PersonsController.cs
@@ -53,8 +53,8 @@ namespace Jellyfin.Api.Controllers
         /// </summary>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
         /// <param name="searchTerm">The search term.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
-        /// <param name="filters">Optional. Specify additional filters to apply. This allows multiple, comma delimited. Options: IsFolder, IsNotFolder, IsUnplayed, IsPlayed, IsFavorite, IsResumable, Likes, Dislikes.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
+        /// <param name="filters">Optional. Specify additional filters to apply.</param>
         /// <param name="isFavorite">Optional filter by items that are marked as favorite, or not. userId is required.</param>
         /// <param name="enableUserData">Optional, include user data.</param>
         /// <param name="imageTypeLimit">Optional, the max number of images to return, per image type.</param>
@@ -71,7 +71,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<QueryResult<BaseItemDto>> GetPersons(
             [FromQuery] int? limit,
             [FromQuery] string? searchTerm,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
             [FromQuery] bool? isFavorite,
             [FromQuery] bool? enableUserData,
@@ -83,8 +83,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] Guid? userId,
             [FromQuery] bool? enableImages = true)
         {
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
diff --git a/Jellyfin.Api/Controllers/PlaylistsController.cs b/Jellyfin.Api/Controllers/PlaylistsController.cs
index f2213f20d..4b3d8d3d3 100644
--- a/Jellyfin.Api/Controllers/PlaylistsController.cs
+++ b/Jellyfin.Api/Controllers/PlaylistsController.cs
@@ -135,7 +135,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="userId">User id.</param>
         /// <param name="startIndex">Optional. The record index to start at. All items with a lower index will be dropped from the results.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="enableImages">Optional. Include image information in output.</param>
         /// <param name="enableUserData">Optional. Include user data.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
@@ -149,7 +149,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery, Required] Guid userId,
             [FromQuery] int? startIndex,
             [FromQuery] int? limit,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableImages,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -177,8 +177,7 @@ namespace Jellyfin.Api.Controllers
                 items = items.Take(limit.Value).ToArray();
             }
 
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
diff --git a/Jellyfin.Api/Controllers/RemoteImageController.cs b/Jellyfin.Api/Controllers/RemoteImageController.cs
index c2bfab175..5284888d8 100644
--- a/Jellyfin.Api/Controllers/RemoteImageController.cs
+++ b/Jellyfin.Api/Controllers/RemoteImageController.cs
@@ -254,7 +254,7 @@ namespace Jellyfin.Api.Controllers
                 throw new ResourceNotFoundException(nameof(response.Content.Headers.ContentType));
             }
 
-            var ext = response.Content.Headers.ContentType.MediaType.Split('/').Last();
+            var ext = response.Content.Headers.ContentType.MediaType.Split('/')[^1];
             var fullCachePath = GetFullCachePath(urlHash + "." + ext);
 
             var fullCacheDirectory = Path.GetDirectoryName(fullCachePath) ?? throw new ResourceNotFoundException($"Provided path ({fullCachePath}) is not valid.");
diff --git a/Jellyfin.Api/Controllers/StudiosController.cs b/Jellyfin.Api/Controllers/StudiosController.cs
index c60d14479..27dcd51bc 100644
--- a/Jellyfin.Api/Controllers/StudiosController.cs
+++ b/Jellyfin.Api/Controllers/StudiosController.cs
@@ -50,7 +50,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="limit">Optional. The maximum number of records to return.</param>
         /// <param name="searchTerm">Optional. Search term.</param>
         /// <param name="parentId">Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="excludeItemTypes">Optional. If specified, results will be filtered out based on item type. This allows multiple, comma delimited.</param>
         /// <param name="includeItemTypes">Optional. If specified, results will be filtered based on item type. This allows multiple, comma delimited.</param>
         /// <param name="isFavorite">Optional filter by items that are marked as favorite, or not.</param>
@@ -72,7 +72,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? limit,
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? excludeItemTypes,
             [FromQuery] string? includeItemTypes,
             [FromQuery] bool? isFavorite,
@@ -86,8 +86,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableImages = true,
             [FromQuery] bool enableTotalRecordCount = true)
         {
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
diff --git a/Jellyfin.Api/Controllers/TrailersController.cs b/Jellyfin.Api/Controllers/TrailersController.cs
index 6b4eee718..d78adcbcd 100644
--- a/Jellyfin.Api/Controllers/TrailersController.cs
+++ b/Jellyfin.Api/Controllers/TrailersController.cs
@@ -146,7 +146,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? searchTerm,
             [FromQuery] string? sortOrder,
             [FromQuery] string? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? excludeItemTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
             [FromQuery] bool? isFavorite,
diff --git a/Jellyfin.Api/Controllers/TvShowsController.cs b/Jellyfin.Api/Controllers/TvShowsController.cs
index 55cdae39d..6fd154836 100644
--- a/Jellyfin.Api/Controllers/TvShowsController.cs
+++ b/Jellyfin.Api/Controllers/TvShowsController.cs
@@ -59,7 +59,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="userId">The user id of the user to get the next up episodes for.</param>
         /// <param name="startIndex">Optional. The record index to start at. All items with a lower index will be dropped from the results.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines, TrailerUrls.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="seriesId">Optional. Filter by series id.</param>
         /// <param name="parentId">Optional. Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
         /// <param name="enableImges">Optional. Include image information in output.</param>
@@ -74,7 +74,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] Guid? userId,
             [FromQuery] int? startIndex,
             [FromQuery] int? limit,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? seriesId,
             [FromQuery] string? parentId,
             [FromQuery] bool? enableImges,
@@ -83,8 +83,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableUserData,
             [FromQuery] bool enableTotalRecordCount = true)
         {
-            var options = new DtoOptions()
-                .AddItemFields(fields!)
+            var options = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImges, enableUserData, imageTypeLimit, enableImageTypes!);
 
@@ -119,7 +118,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="userId">The user id of the user to get the upcoming episodes for.</param>
         /// <param name="startIndex">Optional. The record index to start at. All items with a lower index will be dropped from the results.</param>
         /// <param name="limit">Optional. The maximum number of records to return.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines, TrailerUrls.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="parentId">Optional. Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
         /// <param name="enableImges">Optional. Include image information in output.</param>
         /// <param name="imageTypeLimit">Optional. The max number of images to return, per image type.</param>
@@ -132,7 +131,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] Guid? userId,
             [FromQuery] int? startIndex,
             [FromQuery] int? limit,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? parentId,
             [FromQuery] bool? enableImges,
             [FromQuery] int? imageTypeLimit,
@@ -147,8 +146,7 @@ namespace Jellyfin.Api.Controllers
 
             var parentIdGuid = string.IsNullOrWhiteSpace(parentId) ? Guid.Empty : new Guid(parentId);
 
-            var options = new DtoOptions()
-                .AddItemFields(fields!)
+            var options = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImges, enableUserData, imageTypeLimit, enableImageTypes!);
 
@@ -198,7 +196,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<QueryResult<BaseItemDto>> GetEpisodes(
             [FromRoute, Required] string seriesId,
             [FromQuery] Guid? userId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] int? season,
             [FromQuery] string? seasonId,
             [FromQuery] bool? isMissing,
@@ -218,8 +216,7 @@ namespace Jellyfin.Api.Controllers
 
             List<BaseItem> episodes;
 
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields!)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes!);
 
@@ -321,7 +318,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<QueryResult<BaseItemDto>> GetSeasons(
             [FromRoute, Required] string seriesId,
             [FromQuery] Guid? userId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? isSpecialSeason,
             [FromQuery] bool? isMissing,
             [FromQuery] string? adjacentTo,
@@ -346,8 +343,7 @@ namespace Jellyfin.Api.Controllers
                 AdjacentTo = adjacentTo
             });
 
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes!);
 
diff --git a/Jellyfin.Api/Controllers/UserLibraryController.cs b/Jellyfin.Api/Controllers/UserLibraryController.cs
index faa8a0634..cfd851129 100644
--- a/Jellyfin.Api/Controllers/UserLibraryController.cs
+++ b/Jellyfin.Api/Controllers/UserLibraryController.cs
@@ -252,7 +252,7 @@ namespace Jellyfin.Api.Controllers
         /// </summary>
         /// <param name="userId">User id.</param>
         /// <param name="parentId">Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="includeItemTypes">Optional. If specified, results will be filtered based on item type. This allows multiple, comma delimeted.</param>
         /// <param name="isPlayed">Filter by items that are played, or not.</param>
         /// <param name="enableImages">Optional. include image information in output.</param>
@@ -268,7 +268,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<IEnumerable<BaseItemDto>> GetLatestMedia(
             [FromRoute, Required] Guid userId,
             [FromQuery] Guid? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? includeItemTypes,
             [FromQuery] bool? isPlayed,
             [FromQuery] bool? enableImages,
@@ -288,8 +288,7 @@ namespace Jellyfin.Api.Controllers
                 }
             }
 
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
diff --git a/Jellyfin.Api/Controllers/VideoAttachmentsController.cs b/Jellyfin.Api/Controllers/VideoAttachmentsController.cs
index 09a1c93e6..418c0c123 100644
--- a/Jellyfin.Api/Controllers/VideoAttachmentsController.cs
+++ b/Jellyfin.Api/Controllers/VideoAttachmentsController.cs
@@ -46,7 +46,7 @@ namespace Jellyfin.Api.Controllers
         [Produces(MediaTypeNames.Application.Octet)]
         [ProducesResponseType(StatusCodes.Status200OK)]
         [ProducesResponseType(StatusCodes.Status404NotFound)]
-        public async Task<ActionResult<FileStreamResult>> GetAttachment(
+        public async Task<ActionResult> GetAttachment(
             [FromRoute, Required] Guid videoId,
             [FromRoute, Required] string mediaSourceId,
             [FromRoute, Required] int index)
diff --git a/Jellyfin.Api/Controllers/YearsController.cs b/Jellyfin.Api/Controllers/YearsController.cs
index 1712a6a54..1b38e399d 100644
--- a/Jellyfin.Api/Controllers/YearsController.cs
+++ b/Jellyfin.Api/Controllers/YearsController.cs
@@ -52,7 +52,7 @@ namespace Jellyfin.Api.Controllers
         /// <param name="limit">Optional. The maximum number of records to return.</param>
         /// <param name="sortOrder">Sort Order - Ascending,Descending.</param>
         /// <param name="parentId">Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
-        /// <param name="fields">Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimited. Options: Budget, Chapters, DateCreated, Genres, HomePageUrl, IndexOptions, MediaStreams, Overview, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SortName, Studios, Taglines.</param>
+        /// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
         /// <param name="excludeItemTypes">Optional. If specified, results will be excluded based on item type. This allows multiple, comma delimited.</param>
         /// <param name="includeItemTypes">Optional. If specified, results will be included based on item type. This allows multiple, comma delimited.</param>
         /// <param name="mediaTypes">Optional. Filter by MediaType. Allows multiple, comma delimited.</param>
@@ -72,7 +72,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? limit,
             [FromQuery] string? sortOrder,
             [FromQuery] string? parentId,
-            [FromQuery] string? fields,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] string? excludeItemTypes,
             [FromQuery] string? includeItemTypes,
             [FromQuery] string? mediaTypes,
@@ -84,8 +84,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool recursive = true,
             [FromQuery] bool? enableImages = true)
         {
-            var dtoOptions = new DtoOptions()
-                .AddItemFields(fields)
+            var dtoOptions = new DtoOptions { Fields = fields }
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);