14 files changed, 159 insertions, 87 deletions
diff --git a/Jellyfin.Api/Controllers/AudioController.cs b/Jellyfin.Api/Controllers/AudioController.cs
index 272b4034e..e334e1264 100644
--- a/Jellyfin.Api/Controllers/AudioController.cs
+++ b/Jellyfin.Api/Controllers/AudioController.cs
@@ -92,18 +92,18 @@ public class AudioController : BaseJellyfinApiController
     [ProducesAudioFile]
     public async Task<ActionResult> GetAudioStream(
         [FromRoute, Required] Guid itemId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? container,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? container,
         [FromQuery] bool? @static,
         [FromQuery] string? @params,
         [FromQuery] string? tag,
         [FromQuery, ParameterObsolete] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery] string? mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -114,7 +114,7 @@ public class AudioController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -133,8 +133,8 @@ public class AudioController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,
@@ -259,18 +259,18 @@ public class AudioController : BaseJellyfinApiController
     [ProducesAudioFile]
     public async Task<ActionResult> GetAudioStreamByContainer(
         [FromRoute, Required] Guid itemId,
-        [FromRoute, Required] string container,
+        [FromRoute, Required] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string container,
         [FromQuery] bool? @static,
         [FromQuery] string? @params,
         [FromQuery] string? tag,
         [FromQuery, ParameterObsolete] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery] string? mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -281,7 +281,7 @@ public class AudioController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -300,8 +300,8 @@ public class AudioController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,
diff --git a/Jellyfin.Api/Controllers/BrandingController.cs b/Jellyfin.Api/Controllers/BrandingController.cs
index 3c2c4b4db..1d948ff20 100644
--- a/Jellyfin.Api/Controllers/BrandingController.cs
+++ b/Jellyfin.Api/Controllers/BrandingController.cs
@@ -29,9 +29,18 @@ public class BrandingController : BaseJellyfinApiController
     /// <returns>An <see cref="OkResult"/> containing the branding configuration.</returns>
     [HttpGet("Configuration")]
     [ProducesResponseType(StatusCodes.Status200OK)]
-    public ActionResult<BrandingOptions> GetBrandingOptions()
+    public ActionResult<BrandingOptionsDto> GetBrandingOptions()
     {
-        return _serverConfigurationManager.GetConfiguration<BrandingOptions>("branding");
+        var brandingOptions = _serverConfigurationManager.GetConfiguration<BrandingOptions>("branding");
+
+        var brandingOptionsDto = new BrandingOptionsDto
+        {
+            LoginDisclaimer = brandingOptions.LoginDisclaimer,
+            CustomCss = brandingOptions.CustomCss,
+            SplashscreenEnabled = brandingOptions.SplashscreenEnabled
+        };
+
+        return brandingOptionsDto;
     }
 
     /// <summary>
diff --git a/Jellyfin.Api/Controllers/ConfigurationController.cs b/Jellyfin.Api/Controllers/ConfigurationController.cs
index abe8bec2d..8dcaebf6d 100644
--- a/Jellyfin.Api/Controllers/ConfigurationController.cs
+++ b/Jellyfin.Api/Controllers/ConfigurationController.cs
@@ -9,6 +9,7 @@ using Jellyfin.Extensions.Json;
 using MediaBrowser.Common.Api;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.MediaEncoding;
+using MediaBrowser.Model.Branding;
 using MediaBrowser.Model.Configuration;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
@@ -120,6 +121,30 @@ public class ConfigurationController : BaseJellyfinApiController
     }
 
     /// <summary>
+    /// Updates branding configuration.
+    /// </summary>
+    /// <param name="configuration">Branding configuration.</param>
+    /// <response code="204">Branding configuration updated.</response>
+    /// <returns>Update status.</returns>
+    [HttpPost("Configuration/Branding")]
+    [Authorize(Policy = Policies.RequiresElevation)]
+    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    public ActionResult UpdateBrandingConfiguration([FromBody, Required] BrandingOptionsDto configuration)
+    {
+        // Get the current branding configuration to preserve SplashscreenLocation
+        var currentBranding = (BrandingOptions)_configurationManager.GetConfiguration("branding");
+
+        // Update only the properties from BrandingOptionsDto
+        currentBranding.LoginDisclaimer = configuration.LoginDisclaimer;
+        currentBranding.CustomCss = configuration.CustomCss;
+        currentBranding.SplashscreenEnabled = configuration.SplashscreenEnabled;
+
+        _configurationManager.SaveConfiguration("branding", currentBranding);
+
+        return NoContent();
+    }
+
+    /// <summary>
     /// Updates the path to the media encoder.
     /// </summary>
     /// <param name="mediaEncoderPath">Media encoder path form body.</param>
diff --git a/Jellyfin.Api/Controllers/DynamicHlsController.cs b/Jellyfin.Api/Controllers/DynamicHlsController.cs
index ca8ab0ef7..4cac8ed67 100644
--- a/Jellyfin.Api/Controllers/DynamicHlsController.cs
+++ b/Jellyfin.Api/Controllers/DynamicHlsController.cs
@@ -166,18 +166,18 @@ public class DynamicHlsController : BaseJellyfinApiController
     [ProducesPlaylistFile]
     public async Task<ActionResult> GetLiveHlsStream(
         [FromRoute, Required] Guid itemId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? container,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? container,
         [FromQuery] bool? @static,
         [FromQuery] string? @params,
         [FromQuery] string? tag,
         [FromQuery, ParameterObsolete] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery] string? mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -188,7 +188,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -207,8 +207,8 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,
@@ -415,12 +415,12 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] string? tag,
         [FromQuery, ParameterObsolete] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery, Required] string mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -431,7 +431,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -452,8 +452,8 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,
@@ -591,12 +591,12 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] string? tag,
         [FromQuery, ParameterObsolete] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery, Required] string mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -608,7 +608,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -627,8 +627,8 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,
@@ -761,12 +761,12 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] string? tag,
         [FromQuery, ParameterObsolete] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery] string? mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -777,7 +777,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -798,8 +798,8 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,
@@ -933,12 +933,12 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] string? tag,
         [FromQuery, ParameterObsolete] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery] string? mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -950,7 +950,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -969,8 +969,8 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,
@@ -1106,7 +1106,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromRoute, Required] Guid itemId,
         [FromRoute, Required] string playlistId,
         [FromRoute, Required] int segmentId,
-        [FromRoute, Required] string container,
+        [FromRoute, Required] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string container,
         [FromQuery, Required] long runtimeTicks,
         [FromQuery, Required] long actualSegmentLengthTicks,
         [FromQuery] bool? @static,
@@ -1114,12 +1114,12 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] string? tag,
         [FromQuery, ParameterObsolete] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery] string? mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -1130,7 +1130,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -1151,8 +1151,8 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,
@@ -1291,7 +1291,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromRoute, Required] Guid itemId,
         [FromRoute, Required] string playlistId,
         [FromRoute, Required] int segmentId,
-        [FromRoute, Required] string container,
+        [FromRoute, Required] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string container,
         [FromQuery, Required] long runtimeTicks,
         [FromQuery, Required] long actualSegmentLengthTicks,
         [FromQuery] bool? @static,
@@ -1299,12 +1299,12 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] string? tag,
         [FromQuery, ParameterObsolete] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery] string? mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -1316,7 +1316,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -1335,8 +1335,8 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,
@@ -1419,8 +1419,9 @@ public class DynamicHlsController : BaseJellyfinApiController
                 TranscodingJobType,
                 cancellationTokenSource.Token)
             .ConfigureAwait(false);
-
+        var mediaSourceId = state.BaseRequest.MediaSourceId;
         var request = new CreateMainPlaylistRequest(
+            mediaSourceId is null ? null : Guid.Parse(mediaSourceId),
             state.MediaPath,
             state.SegmentLength * 1000,
             state.RunTimeTicks ?? 0,
@@ -1675,7 +1676,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         }
 
         var audioCodec = _encodingHelper.GetAudioEncoder(state);
-        var bitStreamArgs = EncodingHelper.GetAudioBitStreamArguments(state, state.Request.SegmentContainer, state.MediaSource.Container);
+        var bitStreamArgs = _encodingHelper.GetAudioBitStreamArguments(state, state.Request.SegmentContainer, state.MediaSource.Container);
 
         // opus, dts, truehd and flac (in FFmpeg 5 and older) are experimental in mp4 muxer
         var strictArgs = string.Empty;
@@ -1753,7 +1754,7 @@ public class DynamicHlsController : BaseJellyfinApiController
 
         if (channels.HasValue
             && (channels.Value != 2
-                || (state.AudioStream?.Channels != null && !useDownMixAlgorithm)))
+                || (state.AudioStream?.Channels is not null && !useDownMixAlgorithm)))
         {
             args += " -ac " + channels.Value;
         }
@@ -1822,10 +1823,11 @@ public class DynamicHlsController : BaseJellyfinApiController
             // Clients reporting Dolby Vision capabilities with fallbacks may only support the fallback layer.
             // Only enable Dolby Vision remuxing if the client explicitly declares support for profiles without fallbacks.
             var clientSupportsDoVi = requestedRange.Contains(VideoRangeType.DOVI.ToString(), StringComparison.OrdinalIgnoreCase);
-            var videoIsDoVi = state.VideoStream.VideoRangeType is VideoRangeType.DOVI or VideoRangeType.DOVIWithHDR10 or VideoRangeType.DOVIWithHLG or VideoRangeType.DOVIWithSDR;
+            var videoIsDoVi = EncodingHelper.IsDovi(state.VideoStream);
 
             if (EncodingHelper.IsCopyCodec(codec)
-                && (videoIsDoVi && clientSupportsDoVi))
+                && (videoIsDoVi && clientSupportsDoVi)
+                && !_encodingHelper.IsDoviRemoved(state))
             {
                 if (isActualOutputVideoCodecHevc)
                 {
@@ -1855,7 +1857,7 @@ public class DynamicHlsController : BaseJellyfinApiController
             // If h264_mp4toannexb is ever added, do not use it for live tv.
             if (state.VideoStream is not null && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
             {
-                string bitStreamArgs = EncodingHelper.GetBitStreamArgs(state.VideoStream);
+                string bitStreamArgs = _encodingHelper.GetBitStreamArgs(state, MediaStreamType.Video);
                 if (!string.IsNullOrEmpty(bitStreamArgs))
                 {
                     args += " " + bitStreamArgs;
diff --git a/Jellyfin.Api/Controllers/ImageController.cs b/Jellyfin.Api/Controllers/ImageController.cs
index e7b7405ca..abda053d3 100644
--- a/Jellyfin.Api/Controllers/ImageController.cs
+++ b/Jellyfin.Api/Controllers/ImageController.cs
@@ -1727,7 +1727,8 @@ public class ImageController : BaseJellyfinApiController
         [FromQuery, Range(0, 100)] int quality = 90)
     {
         var brandingOptions = _serverConfigurationManager.GetConfiguration<BrandingOptions>("branding");
-        if (!brandingOptions.SplashscreenEnabled)
+        var isAdmin = User.IsInRole(Constants.UserRoles.Administrator);
+        if (!brandingOptions.SplashscreenEnabled && !isAdmin)
         {
             return NotFound();
         }
diff --git a/Jellyfin.Api/Controllers/ItemsController.cs b/Jellyfin.Api/Controllers/ItemsController.cs
index 803c2f1f7..a49128336 100644
--- a/Jellyfin.Api/Controllers/ItemsController.cs
+++ b/Jellyfin.Api/Controllers/ItemsController.cs
@@ -448,13 +448,13 @@ public class ItemsController : BaseJellyfinApiController
             // Min official rating
             if (!string.IsNullOrWhiteSpace(minOfficialRating))
             {
-                query.MinParentalRating = _localization.GetRatingLevel(minOfficialRating);
+                query.MinParentalRating = _localization.GetRatingScore(minOfficialRating);
             }
 
             // Max official rating
             if (!string.IsNullOrWhiteSpace(maxOfficialRating))
             {
-                query.MaxParentalRating = _localization.GetRatingLevel(maxOfficialRating);
+                query.MaxParentalRating = _localization.GetRatingScore(maxOfficialRating);
             }
 
             // Artists
diff --git a/Jellyfin.Api/Controllers/LiveTvController.cs b/Jellyfin.Api/Controllers/LiveTvController.cs
index 5461d12fa..10f1789ad 100644
--- a/Jellyfin.Api/Controllers/LiveTvController.cs
+++ b/Jellyfin.Api/Controllers/LiveTvController.cs
@@ -1190,7 +1190,9 @@ public class LiveTvController : BaseJellyfinApiController
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(StatusCodes.Status404NotFound)]
     [ProducesVideoFile]
-    public ActionResult GetLiveStreamFile([FromRoute, Required] string streamId, [FromRoute, Required] string container)
+    public ActionResult GetLiveStreamFile(
+        [FromRoute, Required] string streamId,
+        [FromRoute, Required] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string container)
     {
         var liveStreamInfo = _mediaSourceManager.GetLiveStreamInfoByUniqueId(streamId);
         if (liveStreamInfo is null)
diff --git a/Jellyfin.Api/Controllers/LocalizationController.cs b/Jellyfin.Api/Controllers/LocalizationController.cs
index f65d95c41..bbce5a9e1 100644
--- a/Jellyfin.Api/Controllers/LocalizationController.cs
+++ b/Jellyfin.Api/Controllers/LocalizationController.cs
@@ -1,5 +1,4 @@
 using System.Collections.Generic;
-using Jellyfin.Api.Constants;
 using MediaBrowser.Common.Api;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Globalization;
@@ -45,7 +44,7 @@ public class LocalizationController : BaseJellyfinApiController
     /// <returns>An <see cref="OkResult"/> containing the list of countries.</returns>
     [HttpGet("Countries")]
     [ProducesResponseType(StatusCodes.Status200OK)]
-    public ActionResult<IEnumerable<CountryInfo>> GetCountries()
+    public ActionResult<IReadOnlyList<CountryInfo>> GetCountries()
     {
         return Ok(_localization.GetCountries());
     }
@@ -57,7 +56,7 @@ public class LocalizationController : BaseJellyfinApiController
     /// <returns>An <see cref="OkResult"/> containing the list of parental ratings.</returns>
     [HttpGet("ParentalRatings")]
     [ProducesResponseType(StatusCodes.Status200OK)]
-    public ActionResult<IEnumerable<ParentalRating>> GetParentalRatings()
+    public ActionResult<IReadOnlyList<ParentalRating>> GetParentalRatings()
     {
         return Ok(_localization.GetParentalRatings());
     }
diff --git a/Jellyfin.Api/Controllers/PlaystateController.cs b/Jellyfin.Api/Controllers/PlaystateController.cs
index 1577b4594..ade0906b3 100644
--- a/Jellyfin.Api/Controllers/PlaystateController.cs
+++ b/Jellyfin.Api/Controllers/PlaystateController.cs
@@ -272,6 +272,7 @@ public class PlaystateController : BaseJellyfinApiController
     /// <returns>A <see cref="NoContentResult"/>.</returns>
     [HttpPost("PlayingItems/{itemId}")]
     [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [Obsolete("This endpoint is obsolete. Use ReportPlaybackStart instead")]
     public async Task<ActionResult> OnPlaybackStart(
         [FromRoute, Required] Guid itemId,
         [FromQuery] string? mediaSourceId,
@@ -350,6 +351,7 @@ public class PlaystateController : BaseJellyfinApiController
     /// <returns>A <see cref="NoContentResult"/>.</returns>
     [HttpPost("PlayingItems/{itemId}/Progress")]
     [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [Obsolete("This endpoint is obsolete. Use ReportPlaybackProgress instead")]
     public async Task<ActionResult> OnPlaybackProgress(
         [FromRoute, Required] Guid itemId,
         [FromQuery] string? mediaSourceId,
@@ -438,6 +440,7 @@ public class PlaystateController : BaseJellyfinApiController
     /// <returns>A <see cref="NoContentResult"/>.</returns>
     [HttpDelete("PlayingItems/{itemId}")]
     [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [Obsolete("This endpoint is obsolete. Use ReportPlaybackStop instead")]
     public async Task<ActionResult> OnPlaybackStopped(
         [FromRoute, Required] Guid itemId,
         [FromQuery] string? mediaSourceId,
diff --git a/Jellyfin.Api/Controllers/StartupController.cs b/Jellyfin.Api/Controllers/StartupController.cs
index a6bc84311..09f20558f 100644
--- a/Jellyfin.Api/Controllers/StartupController.cs
+++ b/Jellyfin.Api/Controllers/StartupController.cs
@@ -58,6 +58,7 @@ public class StartupController : BaseJellyfinApiController
     {
         return new StartupConfigurationDto
         {
+            ServerName = _config.Configuration.ServerName,
             UICulture = _config.Configuration.UICulture,
             MetadataCountryCode = _config.Configuration.MetadataCountryCode,
             PreferredMetadataLanguage = _config.Configuration.PreferredMetadataLanguage
@@ -74,6 +75,7 @@ public class StartupController : BaseJellyfinApiController
     [ProducesResponseType(StatusCodes.Status204NoContent)]
     public ActionResult UpdateInitialConfiguration([FromBody, Required] StartupConfigurationDto startupConfiguration)
     {
+        _config.Configuration.ServerName = startupConfiguration.ServerName ?? string.Empty;
         _config.Configuration.UICulture = startupConfiguration.UICulture ?? string.Empty;
         _config.Configuration.MetadataCountryCode = startupConfiguration.MetadataCountryCode ?? string.Empty;
         _config.Configuration.PreferredMetadataLanguage = startupConfiguration.PreferredMetadataLanguage ?? string.Empty;
@@ -112,8 +114,7 @@ public class StartupController : BaseJellyfinApiController
         var user = _userManager.Users.First();
         return new StartupUserDto
         {
-            Name = user.Username,
-            Password = user.Password
+            Name = user.Username
         };
     }
 
diff --git a/Jellyfin.Api/Controllers/SyncPlayController.cs b/Jellyfin.Api/Controllers/SyncPlayController.cs
index 383978197..fbab2a784 100644
--- a/Jellyfin.Api/Controllers/SyncPlayController.cs
+++ b/Jellyfin.Api/Controllers/SyncPlayController.cs
@@ -1,9 +1,9 @@
+using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
-using Jellyfin.Api.Constants;
 using Jellyfin.Api.Helpers;
 using Jellyfin.Api.Models.SyncPlayDtos;
 using MediaBrowser.Common.Api;
@@ -50,17 +50,16 @@ public class SyncPlayController : BaseJellyfinApiController
     /// </summary>
     /// <param name="requestData">The settings of the new group.</param>
     /// <response code="204">New group created.</response>
-    /// <returns>A <see cref="NoContentResult"/> indicating success.</returns>
+    /// <returns>An <see cref="GroupInfoDto"/> for the created group.</returns>
     [HttpPost("New")]
-    [ProducesResponseType(StatusCodes.Status204NoContent)]
+    [ProducesResponseType(StatusCodes.Status200OK)]
     [Authorize(Policy = Policies.SyncPlayCreateGroup)]
-    public async Task<ActionResult> SyncPlayCreateGroup(
+    public async Task<ActionResult<GroupInfoDto>> SyncPlayCreateGroup(
         [FromBody, Required] NewGroupRequestDto requestData)
     {
         var currentSession = await RequestHelpers.GetSession(_sessionManager, _userManager, HttpContext).ConfigureAwait(false);
         var syncPlayRequest = new NewGroupRequest(requestData.GroupName);
-        _syncPlayManager.NewGroup(currentSession, syncPlayRequest, CancellationToken.None);
-        return NoContent();
+        return Ok(_syncPlayManager.NewGroup(currentSession, syncPlayRequest, CancellationToken.None));
     }
 
     /// <summary>
@@ -113,6 +112,23 @@ public class SyncPlayController : BaseJellyfinApiController
     }
 
     /// <summary>
+    /// Gets a SyncPlay group by id.
+    /// </summary>
+    /// <param name="id">The id of the group.</param>
+    /// <response code="200">Group returned.</response>
+    /// <returns>An <see cref="GroupInfoDto"/> for the requested group.</returns>
+    [HttpGet("{id:guid}")]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [Authorize(Policy = Policies.SyncPlayJoinGroup)]
+    public async Task<ActionResult<GroupInfoDto>> SyncPlayGetGroup([FromRoute] Guid id)
+    {
+        var currentSession = await RequestHelpers.GetSession(_sessionManager, _userManager, HttpContext).ConfigureAwait(false);
+        var group = _syncPlayManager.GetGroup(currentSession, id);
+        return group == null ? NotFound() : Ok(group);
+    }
+
+    /// <summary>
     /// Request to set new playlist in SyncPlay group.
     /// </summary>
     /// <param name="requestData">The new playlist to play in the group.</param>
diff --git a/Jellyfin.Api/Controllers/SystemController.cs b/Jellyfin.Api/Controllers/SystemController.cs
index 0ee11c070..07a1f7650 100644
--- a/Jellyfin.Api/Controllers/SystemController.cs
+++ b/Jellyfin.Api/Controllers/SystemController.cs
@@ -6,6 +6,7 @@ using System.Linq;
 using System.Net.Mime;
 using Jellyfin.Api.Attributes;
 using Jellyfin.Api.Constants;
+using Jellyfin.Api.Models.SystemInfoDtos;
 using MediaBrowser.Common.Api;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Extensions;
@@ -72,6 +73,19 @@ public class SystemController : BaseJellyfinApiController
         => _systemManager.GetSystemInfo(Request);
 
     /// <summary>
+    /// Gets information about the server.
+    /// </summary>
+    /// <response code="200">Information retrieved.</response>
+    /// <response code="403">User does not have permission to retrieve information.</response>
+    /// <returns>A <see cref="SystemInfo"/> with info about the system.</returns>
+    [HttpGet("Info/Storage")]
+    [Authorize(Policy = Policies.RequiresElevation)]
+    [ProducesResponseType(StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    public ActionResult<SystemStorageDto> GetSystemStorage()
+        => Ok(SystemStorageDto.FromSystemStorageInfo(_systemManager.GetSystemStorageInfo()));
+
+    /// <summary>
     /// Gets public information about the server.
     /// </summary>
     /// <response code="200">Information retrieved.</response>
diff --git a/Jellyfin.Api/Controllers/UniversalAudioController.cs b/Jellyfin.Api/Controllers/UniversalAudioController.cs
index a5b5fde62..fd6334703 100644
--- a/Jellyfin.Api/Controllers/UniversalAudioController.cs
+++ b/Jellyfin.Api/Controllers/UniversalAudioController.cs
@@ -102,13 +102,13 @@ public class UniversalAudioController : BaseJellyfinApiController
         [FromQuery] string? mediaSourceId,
         [FromQuery] string? deviceId,
         [FromQuery] Guid? userId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] int? transcodingAudioChannels,
         [FromQuery] int? maxStreamingBitrate,
         [FromQuery] int? audioBitRate,
         [FromQuery] long? startTimeTicks,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? transcodingContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? transcodingContainer,
         [FromQuery] MediaStreamProtocol? transcodingProtocol,
         [FromQuery] int? maxAudioSampleRate,
         [FromQuery] int? maxAudioBitDepth,
diff --git a/Jellyfin.Api/Controllers/VideosController.cs b/Jellyfin.Api/Controllers/VideosController.cs
index 6f18c1603..97f3239bb 100644
--- a/Jellyfin.Api/Controllers/VideosController.cs
+++ b/Jellyfin.Api/Controllers/VideosController.cs
@@ -315,18 +315,18 @@ public class VideosController : BaseJellyfinApiController
     [ProducesVideoFile]
     public async Task<ActionResult> GetVideoStream(
         [FromRoute, Required] Guid itemId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? container,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? container,
         [FromQuery] bool? @static,
         [FromQuery] string? @params,
         [FromQuery] string? tag,
         [FromQuery, ParameterObsolete] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery] string? mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -337,7 +337,7 @@ public class VideosController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -358,8 +358,8 @@ public class VideosController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,
@@ -556,18 +556,18 @@ public class VideosController : BaseJellyfinApiController
     [ProducesVideoFile]
     public Task<ActionResult> GetVideoStreamByContainer(
         [FromRoute, Required] Guid itemId,
-        [FromRoute, Required] string container,
+        [FromRoute, Required] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string container,
         [FromQuery] bool? @static,
         [FromQuery] string? @params,
         [FromQuery] string? tag,
         [FromQuery] string? deviceProfileId,
         [FromQuery] string? playSessionId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? segmentContainer,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? segmentContainer,
         [FromQuery] int? segmentLength,
         [FromQuery] int? minSegments,
         [FromQuery] string? mediaSourceId,
         [FromQuery] string? deviceId,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? audioCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? audioCodec,
         [FromQuery] bool? enableAutoStreamCopy,
         [FromQuery] bool? allowVideoStreamCopy,
         [FromQuery] bool? allowAudioStreamCopy,
@@ -578,7 +578,7 @@ public class VideosController : BaseJellyfinApiController
         [FromQuery] int? audioChannels,
         [FromQuery] int? maxAudioChannels,
         [FromQuery] string? profile,
-        [FromQuery] string? level,
+        [FromQuery] [RegularExpression(EncodingHelper.LevelValidationRegex)] string? level,
         [FromQuery] float? framerate,
         [FromQuery] float? maxFramerate,
         [FromQuery] bool? copyTimestamps,
@@ -599,8 +599,8 @@ public class VideosController : BaseJellyfinApiController
         [FromQuery] int? cpuCoreLimit,
         [FromQuery] string? liveStreamId,
         [FromQuery] bool? enableMpegtsM2TsMode,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? videoCodec,
-        [FromQuery] [RegularExpression(EncodingHelper.ValidationRegex)] string? subtitleCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? videoCodec,
+        [FromQuery] [RegularExpression(EncodingHelper.ContainerValidationRegex)] string? subtitleCodec,
         [FromQuery] string? transcodeReasons,
         [FromQuery] int? audioStreamIndex,
         [FromQuery] int? videoStreamIndex,