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Move DynamicHlsService to Jellyfin.Api

crobibero 4 年之前
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f645e2f884

+ 1 - 6
Jellyfin.Api/Auth/BaseAuthorizationHandler.cs

@@ -70,7 +70,7 @@ namespace Jellyfin.Api.Auth
                 return false;
             }
 
-            var ip = NormalizeIp(_httpContextAccessor.HttpContext.Connection.RemoteIpAddress).ToString();
+            var ip = RequestHelpers.NormalizeIp(_httpContextAccessor.HttpContext.Connection.RemoteIpAddress).ToString();
             var isInLocalNetwork = _networkManager.IsInLocalNetwork(ip);
             // User cannot access remotely and user is remote
             if (!user.HasPermission(PermissionKind.EnableRemoteAccess) && !isInLocalNetwork)
@@ -100,10 +100,5 @@ namespace Jellyfin.Api.Auth
 
             return true;
         }
-
-        private static IPAddress NormalizeIp(IPAddress ip)
-        {
-            return ip.IsIPv4MappedToIPv6 ? ip.MapToIPv4() : ip;
-        }
     }
 }

+ 2216 - 0
Jellyfin.Api/Controllers/DynamicHlsController.cs

@@ -0,0 +1,2216 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Diagnostics.CodeAnalysis;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Jellyfin.Api.Constants;
+using Jellyfin.Api.Helpers;
+using Jellyfin.Api.Models.PlaybackDtos;
+using Jellyfin.Api.Models.StreamingDtos;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Common.Net;
+using MediaBrowser.Controller.Configuration;
+using MediaBrowser.Controller.Devices;
+using MediaBrowser.Controller.Dlna;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.MediaEncoding;
+using MediaBrowser.Controller.Net;
+using MediaBrowser.Model.Configuration;
+using MediaBrowser.Model.Dlna;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Net;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
+using Microsoft.Net.Http.Headers;
+
+namespace Jellyfin.Api.Controllers
+{
+    /// <summary>
+    /// Dynamic hls controller.
+    /// </summary>
+    [Authorize(Policy = Policies.DefaultAuthorization)]
+    public class DynamicHlsController : BaseJellyfinApiController
+    {
+        private readonly ILibraryManager _libraryManager;
+        private readonly IUserManager _userManager;
+        private readonly IDlnaManager _dlnaManager;
+        private readonly IAuthorizationContext _authContext;
+        private readonly IMediaSourceManager _mediaSourceManager;
+        private readonly IServerConfigurationManager _serverConfigurationManager;
+        private readonly IMediaEncoder _mediaEncoder;
+        private readonly IFileSystem _fileSystem;
+        private readonly ISubtitleEncoder _subtitleEncoder;
+        private readonly IConfiguration _configuration;
+        private readonly IDeviceManager _deviceManager;
+        private readonly TranscodingJobHelper _transcodingJobHelper;
+        private readonly INetworkManager _networkManager;
+        private readonly ILogger<DynamicHlsController> _logger;
+        private readonly EncodingHelper _encodingHelper;
+
+        private readonly TranscodingJobType _transcodingJobType = TranscodingJobType.Hls;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="DynamicHlsController"/> class.
+        /// </summary>
+        /// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param>
+        /// <param name="userManager">Instance of the <see cref="IUserManager"/> interface.</param>
+        /// <param name="dlnaManager">Instance of the <see cref="IDlnaManager"/> interface.</param>
+        /// <param name="authContext">Instance of the <see cref="IAuthorizationContext"/> interface.</param>
+        /// <param name="mediaSourceManager">Instance of the <see cref="IMediaSourceManager"/> interface.</param>
+        /// <param name="serverConfigurationManager">Instance of the <see cref="IServerConfigurationManager"/> interface.</param>
+        /// <param name="mediaEncoder">Instance of the <see cref="IMediaEncoder"/> interface.</param>
+        /// <param name="fileSystem">Instance of the <see cref="IFileSystem"/> interface.</param>
+        /// <param name="subtitleEncoder">Instance of the <see cref="ISubtitleEncoder"/> interface.</param>
+        /// <param name="configuration">Instance of the <see cref="IConfiguration"/> interface.</param>
+        /// <param name="deviceManager">Instance of the <see cref="IDeviceManager"/> interface.</param>
+        /// <param name="transcodingJobHelper">Instance of the <see cref="TranscodingJobHelper"/> class.</param>
+        /// <param name="networkManager">Instance of the <see cref="INetworkManager"/> interface.</param>
+        /// <param name="logger">Instance of the <see cref="ILogger{DynamicHlsController}"/> interface.</param>
+        public DynamicHlsController(
+            ILibraryManager libraryManager,
+            IUserManager userManager,
+            IDlnaManager dlnaManager,
+            IAuthorizationContext authContext,
+            IMediaSourceManager mediaSourceManager,
+            IServerConfigurationManager serverConfigurationManager,
+            IMediaEncoder mediaEncoder,
+            IFileSystem fileSystem,
+            ISubtitleEncoder subtitleEncoder,
+            IConfiguration configuration,
+            IDeviceManager deviceManager,
+            TranscodingJobHelper transcodingJobHelper,
+            INetworkManager networkManager,
+            ILogger<DynamicHlsController> logger)
+        {
+            _libraryManager = libraryManager;
+            _userManager = userManager;
+            _dlnaManager = dlnaManager;
+            _authContext = authContext;
+            _mediaSourceManager = mediaSourceManager;
+            _serverConfigurationManager = serverConfigurationManager;
+            _mediaEncoder = mediaEncoder;
+            _fileSystem = fileSystem;
+            _subtitleEncoder = subtitleEncoder;
+            _configuration = configuration;
+            _deviceManager = deviceManager;
+            _transcodingJobHelper = transcodingJobHelper;
+            _networkManager = networkManager;
+            _logger = logger;
+
+            _encodingHelper = new EncodingHelper(_mediaEncoder, _fileSystem, _subtitleEncoder, _configuration);
+        }
+
+        /// <summary>
+        /// Gets a video hls playlist stream.
+        /// </summary>
+        /// <param name="itemId">The item id.</param>
+        /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param>
+        /// <param name="static">Optional. If true, the original file will be streamed statically without any encoding. Use either no url extension or the original file extension. true/false.</param>
+        /// <param name="params">The streaming parameters.</param>
+        /// <param name="tag">The tag.</param>
+        /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param>
+        /// <param name="playSessionId">The play session id.</param>
+        /// <param name="segmentContainer">The segment container.</param>
+        /// <param name="segmentLength">The segment lenght.</param>
+        /// <param name="minSegments">The minimum number of segments.</param>
+        /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param>
+        /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param>
+        /// <param name="audioCodec">Optional. Specify a audio codec to encode to, e.g. mp3. If omitted the server will auto-select using the url's extension. Options: aac, mp3, vorbis, wma.</param>
+        /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param>
+        /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param>
+        /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param>
+        /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param>
+        /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param>
+        /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param>
+        /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param>
+        /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param>
+        /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param>
+        /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param>
+        /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param>
+        /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param>
+        /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param>
+        /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param>
+        /// <param name="maxRefFrames">Optional.</param>
+        /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param>
+        /// <param name="requireAvc">Optional. Whether to require avc.</param>
+        /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param>
+        /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param>
+        /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param>
+        /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param>
+        /// <param name="liveStreamId">The live stream id.</param>
+        /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param>
+        /// <param name="videoCodec">Optional. Specify a video codec to encode to, e.g. h264. If omitted the server will auto-select using the url's extension. Options: h265, h264, mpeg4, theora, vpx, wmv.</param>
+        /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param>
+        /// <param name="transcodingReasons">Optional. The transcoding reason.</param>
+        /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param>
+        /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param>
+        /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param>
+        /// <param name="streamOptions">Optional. The streaming options.</param>
+        /// <param name="enableAdaptiveBitrateStreaming">Enable adaptive bitrate streaming.</param>
+        /// <response code="200">Video stream returned.</response>
+        /// <returns>A <see cref="FileResult"/> containing the playlist file.</returns>
+        [HttpGet("/Videos/{itemId}/master.m3u8")]
+        [HttpHead("/Videos/{itemId}/master.m3u8")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        public async Task<ActionResult> GetMasterHlsVideoPlaylist(
+            [FromRoute] Guid itemId,
+            [FromRoute] string? container,
+            [FromQuery] bool? @static,
+            [FromQuery] string? @params,
+            [FromQuery] string? tag,
+            [FromQuery] string? deviceProfileId,
+            [FromQuery] string? playSessionId,
+            [FromQuery] string? segmentContainer,
+            [FromQuery] int? segmentLength,
+            [FromQuery] int? minSegments,
+            [FromQuery, Required] string? mediaSourceId,
+            [FromQuery] string? deviceId,
+            [FromQuery] string? audioCodec,
+            [FromQuery] bool? enableAutoStreamCopy,
+            [FromQuery] bool? allowVideoStreamCopy,
+            [FromQuery] bool? allowAudioStreamCopy,
+            [FromQuery] bool? breakOnNonKeyFrames,
+            [FromQuery] int? audioSampleRate,
+            [FromQuery] int? maxAudioBitDepth,
+            [FromQuery] int? audioBitRate,
+            [FromQuery] int? audioChannels,
+            [FromQuery] int? maxAudioChannels,
+            [FromQuery] string? profile,
+            [FromQuery] string? level,
+            [FromQuery] float? framerate,
+            [FromQuery] float? maxFramerate,
+            [FromQuery] bool? copyTimestamps,
+            [FromQuery] long? startTimeTicks,
+            [FromQuery] int? width,
+            [FromQuery] int? height,
+            [FromQuery] int? videoBitRate,
+            [FromQuery] int? subtitleStreamIndex,
+            [FromQuery] SubtitleDeliveryMethod subtitleMethod,
+            [FromQuery] int? maxRefFrames,
+            [FromQuery] int? maxVideoBitDepth,
+            [FromQuery] bool? requireAvc,
+            [FromQuery] bool? deInterlace,
+            [FromQuery] bool? requireNonAnamorphic,
+            [FromQuery] int? transcodingMaxAudioChannels,
+            [FromQuery] int? cpuCoreLimit,
+            [FromQuery] string? liveStreamId,
+            [FromQuery] bool? enableMpegtsM2TsMode,
+            [FromQuery] string? videoCodec,
+            [FromQuery] string? subtitleCodec,
+            [FromQuery] string? transcodingReasons,
+            [FromQuery] int? audioStreamIndex,
+            [FromQuery] int? videoStreamIndex,
+            [FromQuery] EncodingContext context,
+            [FromQuery] Dictionary<string, string> streamOptions,
+            [FromQuery] bool enableAdaptiveBitrateStreaming = true)
+        {
+            var isHeadRequest = Request.Method == System.Net.WebRequestMethods.Http.Head;
+            var cancellationTokenSource = new CancellationTokenSource();
+            var streamingRequest = new HlsVideoRequestDto
+            {
+                Id = itemId,
+                Container = container,
+                Static = @static ?? true,
+                Params = @params,
+                Tag = tag,
+                DeviceProfileId = deviceProfileId,
+                PlaySessionId = playSessionId,
+                SegmentContainer = segmentContainer,
+                SegmentLength = segmentLength,
+                MinSegments = minSegments,
+                MediaSourceId = mediaSourceId,
+                DeviceId = deviceId,
+                AudioCodec = audioCodec,
+                EnableAutoStreamCopy = enableAutoStreamCopy ?? true,
+                AllowAudioStreamCopy = allowAudioStreamCopy ?? true,
+                AllowVideoStreamCopy = allowVideoStreamCopy ?? true,
+                BreakOnNonKeyFrames = breakOnNonKeyFrames ?? false,
+                AudioSampleRate = audioSampleRate,
+                MaxAudioChannels = maxAudioChannels,
+                AudioBitRate = audioBitRate,
+                MaxAudioBitDepth = maxAudioBitDepth,
+                AudioChannels = audioChannels,
+                Profile = profile,
+                Level = level,
+                Framerate = framerate,
+                MaxFramerate = maxFramerate,
+                CopyTimestamps = copyTimestamps ?? true,
+                StartTimeTicks = startTimeTicks,
+                Width = width,
+                Height = height,
+                VideoBitRate = videoBitRate,
+                SubtitleStreamIndex = subtitleStreamIndex,
+                SubtitleMethod = subtitleMethod,
+                MaxRefFrames = maxRefFrames,
+                MaxVideoBitDepth = maxVideoBitDepth,
+                RequireAvc = requireAvc ?? true,
+                DeInterlace = deInterlace ?? true,
+                RequireNonAnamorphic = requireNonAnamorphic ?? true,
+                TranscodingMaxAudioChannels = transcodingMaxAudioChannels,
+                CpuCoreLimit = cpuCoreLimit,
+                LiveStreamId = liveStreamId,
+                EnableMpegtsM2TsMode = enableMpegtsM2TsMode ?? true,
+                VideoCodec = videoCodec,
+                SubtitleCodec = subtitleCodec,
+                TranscodeReasons = transcodingReasons,
+                AudioStreamIndex = audioStreamIndex,
+                VideoStreamIndex = videoStreamIndex,
+                Context = context,
+                StreamOptions = streamOptions,
+                EnableAdaptiveBitrateStreaming = enableAdaptiveBitrateStreaming
+            };
+
+            return await GetMasterPlaylistInternal(streamingRequest, isHeadRequest, enableAdaptiveBitrateStreaming, cancellationTokenSource)
+                .ConfigureAwait(false);
+        }
+
+        /// <summary>
+        /// Gets an audio hls playlist stream.
+        /// </summary>
+        /// <param name="itemId">The item id.</param>
+        /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param>
+        /// <param name="static">Optional. If true, the original file will be streamed statically without any encoding. Use either no url extension or the original file extension. true/false.</param>
+        /// <param name="params">The streaming parameters.</param>
+        /// <param name="tag">The tag.</param>
+        /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param>
+        /// <param name="playSessionId">The play session id.</param>
+        /// <param name="segmentContainer">The segment container.</param>
+        /// <param name="segmentLength">The segment lenght.</param>
+        /// <param name="minSegments">The minimum number of segments.</param>
+        /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param>
+        /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param>
+        /// <param name="audioCodec">Optional. Specify a audio codec to encode to, e.g. mp3. If omitted the server will auto-select using the url's extension. Options: aac, mp3, vorbis, wma.</param>
+        /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param>
+        /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param>
+        /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param>
+        /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param>
+        /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param>
+        /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param>
+        /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param>
+        /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param>
+        /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param>
+        /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param>
+        /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param>
+        /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param>
+        /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param>
+        /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param>
+        /// <param name="maxRefFrames">Optional.</param>
+        /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param>
+        /// <param name="requireAvc">Optional. Whether to require avc.</param>
+        /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param>
+        /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param>
+        /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param>
+        /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param>
+        /// <param name="liveStreamId">The live stream id.</param>
+        /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param>
+        /// <param name="videoCodec">Optional. Specify a video codec to encode to, e.g. h264. If omitted the server will auto-select using the url's extension. Options: h265, h264, mpeg4, theora, vpx, wmv.</param>
+        /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param>
+        /// <param name="transcodingReasons">Optional. The transcoding reason.</param>
+        /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param>
+        /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param>
+        /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param>
+        /// <param name="streamOptions">Optional. The streaming options.</param>
+        /// <param name="enableAdaptiveBitrateStreaming">Enable adaptive bitrate streaming.</param>
+        /// <response code="200">Audio stream returned.</response>
+        /// <returns>A <see cref="FileResult"/> containing the playlist file.</returns>
+        [HttpGet("/Audio/{itemId}/master.m3u8")]
+        [HttpHead("/Audio/{itemId}/master.m3u8")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        public async Task<ActionResult> GetMasterHlsAudioPlaylist(
+            [FromRoute] Guid itemId,
+            [FromRoute] string? container,
+            [FromQuery] bool? @static,
+            [FromQuery] string? @params,
+            [FromQuery] string? tag,
+            [FromQuery] string? deviceProfileId,
+            [FromQuery] string? playSessionId,
+            [FromQuery] string? segmentContainer,
+            [FromQuery] int? segmentLength,
+            [FromQuery] int? minSegments,
+            [FromQuery, Required] string? mediaSourceId,
+            [FromQuery] string? deviceId,
+            [FromQuery] string? audioCodec,
+            [FromQuery] bool? enableAutoStreamCopy,
+            [FromQuery] bool? allowVideoStreamCopy,
+            [FromQuery] bool? allowAudioStreamCopy,
+            [FromQuery] bool? breakOnNonKeyFrames,
+            [FromQuery] int? audioSampleRate,
+            [FromQuery] int? maxAudioBitDepth,
+            [FromQuery] int? audioBitRate,
+            [FromQuery] int? audioChannels,
+            [FromQuery] int? maxAudioChannels,
+            [FromQuery] string? profile,
+            [FromQuery] string? level,
+            [FromQuery] float? framerate,
+            [FromQuery] float? maxFramerate,
+            [FromQuery] bool? copyTimestamps,
+            [FromQuery] long? startTimeTicks,
+            [FromQuery] int? width,
+            [FromQuery] int? height,
+            [FromQuery] int? videoBitRate,
+            [FromQuery] int? subtitleStreamIndex,
+            [FromQuery] SubtitleDeliveryMethod subtitleMethod,
+            [FromQuery] int? maxRefFrames,
+            [FromQuery] int? maxVideoBitDepth,
+            [FromQuery] bool? requireAvc,
+            [FromQuery] bool? deInterlace,
+            [FromQuery] bool? requireNonAnamorphic,
+            [FromQuery] int? transcodingMaxAudioChannels,
+            [FromQuery] int? cpuCoreLimit,
+            [FromQuery] string? liveStreamId,
+            [FromQuery] bool? enableMpegtsM2TsMode,
+            [FromQuery] string? videoCodec,
+            [FromQuery] string? subtitleCodec,
+            [FromQuery] string? transcodingReasons,
+            [FromQuery] int? audioStreamIndex,
+            [FromQuery] int? videoStreamIndex,
+            [FromQuery] EncodingContext context,
+            [FromQuery] Dictionary<string, string> streamOptions,
+            [FromQuery] bool enableAdaptiveBitrateStreaming = true)
+        {
+            var isHeadRequest = Request.Method == System.Net.WebRequestMethods.Http.Head;
+            var cancellationTokenSource = new CancellationTokenSource();
+            var streamingRequest = new HlsAudioRequestDto
+            {
+                Id = itemId,
+                Container = container,
+                Static = @static ?? true,
+                Params = @params,
+                Tag = tag,
+                DeviceProfileId = deviceProfileId,
+                PlaySessionId = playSessionId,
+                SegmentContainer = segmentContainer,
+                SegmentLength = segmentLength,
+                MinSegments = minSegments,
+                MediaSourceId = mediaSourceId,
+                DeviceId = deviceId,
+                AudioCodec = audioCodec,
+                EnableAutoStreamCopy = enableAutoStreamCopy ?? true,
+                AllowAudioStreamCopy = allowAudioStreamCopy ?? true,
+                AllowVideoStreamCopy = allowVideoStreamCopy ?? true,
+                BreakOnNonKeyFrames = breakOnNonKeyFrames ?? false,
+                AudioSampleRate = audioSampleRate,
+                MaxAudioChannels = maxAudioChannels,
+                AudioBitRate = audioBitRate,
+                MaxAudioBitDepth = maxAudioBitDepth,
+                AudioChannels = audioChannels,
+                Profile = profile,
+                Level = level,
+                Framerate = framerate,
+                MaxFramerate = maxFramerate,
+                CopyTimestamps = copyTimestamps ?? true,
+                StartTimeTicks = startTimeTicks,
+                Width = width,
+                Height = height,
+                VideoBitRate = videoBitRate,
+                SubtitleStreamIndex = subtitleStreamIndex,
+                SubtitleMethod = subtitleMethod,
+                MaxRefFrames = maxRefFrames,
+                MaxVideoBitDepth = maxVideoBitDepth,
+                RequireAvc = requireAvc ?? true,
+                DeInterlace = deInterlace ?? true,
+                RequireNonAnamorphic = requireNonAnamorphic ?? true,
+                TranscodingMaxAudioChannels = transcodingMaxAudioChannels,
+                CpuCoreLimit = cpuCoreLimit,
+                LiveStreamId = liveStreamId,
+                EnableMpegtsM2TsMode = enableMpegtsM2TsMode ?? true,
+                VideoCodec = videoCodec,
+                SubtitleCodec = subtitleCodec,
+                TranscodeReasons = transcodingReasons,
+                AudioStreamIndex = audioStreamIndex,
+                VideoStreamIndex = videoStreamIndex,
+                Context = context,
+                StreamOptions = streamOptions,
+                EnableAdaptiveBitrateStreaming = enableAdaptiveBitrateStreaming
+            };
+
+            return await GetMasterPlaylistInternal(streamingRequest, isHeadRequest, enableAdaptiveBitrateStreaming, cancellationTokenSource)
+                .ConfigureAwait(false);
+        }
+
+        /// <summary>
+        /// Gets a video stream using HTTP live streaming.
+        /// </summary>
+        /// <param name="itemId">The item id.</param>
+        /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param>
+        /// <param name="static">Optional. If true, the original file will be streamed statically without any encoding. Use either no url extension or the original file extension. true/false.</param>
+        /// <param name="params">The streaming parameters.</param>
+        /// <param name="tag">The tag.</param>
+        /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param>
+        /// <param name="playSessionId">The play session id.</param>
+        /// <param name="segmentContainer">The segment container.</param>
+        /// <param name="segmentLength">The segment lenght.</param>
+        /// <param name="minSegments">The minimum number of segments.</param>
+        /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param>
+        /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param>
+        /// <param name="audioCodec">Optional. Specify a audio codec to encode to, e.g. mp3. If omitted the server will auto-select using the url's extension. Options: aac, mp3, vorbis, wma.</param>
+        /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param>
+        /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param>
+        /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param>
+        /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param>
+        /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param>
+        /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param>
+        /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param>
+        /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param>
+        /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param>
+        /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param>
+        /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param>
+        /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param>
+        /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param>
+        /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param>
+        /// <param name="maxRefFrames">Optional.</param>
+        /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param>
+        /// <param name="requireAvc">Optional. Whether to require avc.</param>
+        /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param>
+        /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param>
+        /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param>
+        /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param>
+        /// <param name="liveStreamId">The live stream id.</param>
+        /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param>
+        /// <param name="videoCodec">Optional. Specify a video codec to encode to, e.g. h264. If omitted the server will auto-select using the url's extension. Options: h265, h264, mpeg4, theora, vpx, wmv.</param>
+        /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param>
+        /// <param name="transcodingReasons">Optional. The transcoding reason.</param>
+        /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param>
+        /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param>
+        /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param>
+        /// <param name="streamOptions">Optional. The streaming options.</param>
+        /// <response code="200">Video stream returned.</response>
+        /// <returns>A <see cref="FileResult"/> containing the audio file.</returns>
+        [HttpGet("/Videos/{itemId}/main.m3u8")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        public async Task<ActionResult> GetVariantHlsVideoPlaylist(
+            [FromRoute] Guid itemId,
+            [FromRoute] string? container,
+            [FromQuery] bool? @static,
+            [FromQuery] string? @params,
+            [FromQuery] string? tag,
+            [FromQuery] string? deviceProfileId,
+            [FromQuery] string? playSessionId,
+            [FromQuery] string? segmentContainer,
+            [FromQuery] int? segmentLength,
+            [FromQuery] int? minSegments,
+            [FromQuery] string? mediaSourceId,
+            [FromQuery] string? deviceId,
+            [FromQuery] string? audioCodec,
+            [FromQuery] bool? enableAutoStreamCopy,
+            [FromQuery] bool? allowVideoStreamCopy,
+            [FromQuery] bool? allowAudioStreamCopy,
+            [FromQuery] bool? breakOnNonKeyFrames,
+            [FromQuery] int? audioSampleRate,
+            [FromQuery] int? maxAudioBitDepth,
+            [FromQuery] int? audioBitRate,
+            [FromQuery] int? audioChannels,
+            [FromQuery] int? maxAudioChannels,
+            [FromQuery] string? profile,
+            [FromQuery] string? level,
+            [FromQuery] float? framerate,
+            [FromQuery] float? maxFramerate,
+            [FromQuery] bool? copyTimestamps,
+            [FromQuery] long? startTimeTicks,
+            [FromQuery] int? width,
+            [FromQuery] int? height,
+            [FromQuery] int? videoBitRate,
+            [FromQuery] int? subtitleStreamIndex,
+            [FromQuery] SubtitleDeliveryMethod subtitleMethod,
+            [FromQuery] int? maxRefFrames,
+            [FromQuery] int? maxVideoBitDepth,
+            [FromQuery] bool? requireAvc,
+            [FromQuery] bool? deInterlace,
+            [FromQuery] bool? requireNonAnamorphic,
+            [FromQuery] int? transcodingMaxAudioChannels,
+            [FromQuery] int? cpuCoreLimit,
+            [FromQuery] string? liveStreamId,
+            [FromQuery] bool? enableMpegtsM2TsMode,
+            [FromQuery] string? videoCodec,
+            [FromQuery] string? subtitleCodec,
+            [FromQuery] string? transcodingReasons,
+            [FromQuery] int? audioStreamIndex,
+            [FromQuery] int? videoStreamIndex,
+            [FromQuery] EncodingContext context,
+            [FromQuery] Dictionary<string, string> streamOptions)
+        {
+            var cancellationTokenSource = new CancellationTokenSource();
+            var streamingRequest = new VideoRequestDto
+            {
+                Id = itemId,
+                Container = container,
+                Static = @static ?? true,
+                Params = @params,
+                Tag = tag,
+                DeviceProfileId = deviceProfileId,
+                PlaySessionId = playSessionId,
+                SegmentContainer = segmentContainer,
+                SegmentLength = segmentLength,
+                MinSegments = minSegments,
+                MediaSourceId = mediaSourceId,
+                DeviceId = deviceId,
+                AudioCodec = audioCodec,
+                EnableAutoStreamCopy = enableAutoStreamCopy ?? true,
+                AllowAudioStreamCopy = allowAudioStreamCopy ?? true,
+                AllowVideoStreamCopy = allowVideoStreamCopy ?? true,
+                BreakOnNonKeyFrames = breakOnNonKeyFrames ?? false,
+                AudioSampleRate = audioSampleRate,
+                MaxAudioChannels = maxAudioChannels,
+                AudioBitRate = audioBitRate,
+                MaxAudioBitDepth = maxAudioBitDepth,
+                AudioChannels = audioChannels,
+                Profile = profile,
+                Level = level,
+                Framerate = framerate,
+                MaxFramerate = maxFramerate,
+                CopyTimestamps = copyTimestamps ?? true,
+                StartTimeTicks = startTimeTicks,
+                Width = width,
+                Height = height,
+                VideoBitRate = videoBitRate,
+                SubtitleStreamIndex = subtitleStreamIndex,
+                SubtitleMethod = subtitleMethod,
+                MaxRefFrames = maxRefFrames,
+                MaxVideoBitDepth = maxVideoBitDepth,
+                RequireAvc = requireAvc ?? true,
+                DeInterlace = deInterlace ?? true,
+                RequireNonAnamorphic = requireNonAnamorphic ?? true,
+                TranscodingMaxAudioChannels = transcodingMaxAudioChannels,
+                CpuCoreLimit = cpuCoreLimit,
+                LiveStreamId = liveStreamId,
+                EnableMpegtsM2TsMode = enableMpegtsM2TsMode ?? true,
+                VideoCodec = videoCodec,
+                SubtitleCodec = subtitleCodec,
+                TranscodeReasons = transcodingReasons,
+                AudioStreamIndex = audioStreamIndex,
+                VideoStreamIndex = videoStreamIndex,
+                Context = context,
+                StreamOptions = streamOptions
+            };
+
+            return await GetVariantPlaylistInternal(streamingRequest, "main", cancellationTokenSource)
+                .ConfigureAwait(false);
+        }
+
+        /// <summary>
+        /// Gets an audio stream using HTTP live streaming.
+        /// </summary>
+        /// <param name="itemId">The item id.</param>
+        /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param>
+        /// <param name="static">Optional. If true, the original file will be streamed statically without any encoding. Use either no url extension or the original file extension. true/false.</param>
+        /// <param name="params">The streaming parameters.</param>
+        /// <param name="tag">The tag.</param>
+        /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param>
+        /// <param name="playSessionId">The play session id.</param>
+        /// <param name="segmentContainer">The segment container.</param>
+        /// <param name="segmentLength">The segment lenght.</param>
+        /// <param name="minSegments">The minimum number of segments.</param>
+        /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param>
+        /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param>
+        /// <param name="audioCodec">Optional. Specify a audio codec to encode to, e.g. mp3. If omitted the server will auto-select using the url's extension. Options: aac, mp3, vorbis, wma.</param>
+        /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param>
+        /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param>
+        /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param>
+        /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param>
+        /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param>
+        /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param>
+        /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param>
+        /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param>
+        /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param>
+        /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param>
+        /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param>
+        /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param>
+        /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param>
+        /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param>
+        /// <param name="maxRefFrames">Optional.</param>
+        /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param>
+        /// <param name="requireAvc">Optional. Whether to require avc.</param>
+        /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param>
+        /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param>
+        /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param>
+        /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param>
+        /// <param name="liveStreamId">The live stream id.</param>
+        /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param>
+        /// <param name="videoCodec">Optional. Specify a video codec to encode to, e.g. h264. If omitted the server will auto-select using the url's extension. Options: h265, h264, mpeg4, theora, vpx, wmv.</param>
+        /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param>
+        /// <param name="transcodingReasons">Optional. The transcoding reason.</param>
+        /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param>
+        /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param>
+        /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param>
+        /// <param name="streamOptions">Optional. The streaming options.</param>
+        /// <response code="200">Audio stream returned.</response>
+        /// <returns>A <see cref="FileResult"/> containing the audio file.</returns>
+        [HttpGet("/Audio/{itemId}/main.m3u8")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        public async Task<ActionResult> GetVariantHlsAudioPlaylist(
+            [FromRoute] Guid itemId,
+            [FromRoute] string? container,
+            [FromQuery] bool? @static,
+            [FromQuery] string? @params,
+            [FromQuery] string? tag,
+            [FromQuery] string? deviceProfileId,
+            [FromQuery] string? playSessionId,
+            [FromQuery] string? segmentContainer,
+            [FromQuery] int? segmentLength,
+            [FromQuery] int? minSegments,
+            [FromQuery] string? mediaSourceId,
+            [FromQuery] string? deviceId,
+            [FromQuery] string? audioCodec,
+            [FromQuery] bool? enableAutoStreamCopy,
+            [FromQuery] bool? allowVideoStreamCopy,
+            [FromQuery] bool? allowAudioStreamCopy,
+            [FromQuery] bool? breakOnNonKeyFrames,
+            [FromQuery] int? audioSampleRate,
+            [FromQuery] int? maxAudioBitDepth,
+            [FromQuery] int? audioBitRate,
+            [FromQuery] int? audioChannels,
+            [FromQuery] int? maxAudioChannels,
+            [FromQuery] string? profile,
+            [FromQuery] string? level,
+            [FromQuery] float? framerate,
+            [FromQuery] float? maxFramerate,
+            [FromQuery] bool? copyTimestamps,
+            [FromQuery] long? startTimeTicks,
+            [FromQuery] int? width,
+            [FromQuery] int? height,
+            [FromQuery] int? videoBitRate,
+            [FromQuery] int? subtitleStreamIndex,
+            [FromQuery] SubtitleDeliveryMethod subtitleMethod,
+            [FromQuery] int? maxRefFrames,
+            [FromQuery] int? maxVideoBitDepth,
+            [FromQuery] bool? requireAvc,
+            [FromQuery] bool? deInterlace,
+            [FromQuery] bool? requireNonAnamorphic,
+            [FromQuery] int? transcodingMaxAudioChannels,
+            [FromQuery] int? cpuCoreLimit,
+            [FromQuery] string? liveStreamId,
+            [FromQuery] bool? enableMpegtsM2TsMode,
+            [FromQuery] string? videoCodec,
+            [FromQuery] string? subtitleCodec,
+            [FromQuery] string? transcodingReasons,
+            [FromQuery] int? audioStreamIndex,
+            [FromQuery] int? videoStreamIndex,
+            [FromQuery] EncodingContext context,
+            [FromQuery] Dictionary<string, string> streamOptions)
+        {
+            var cancellationTokenSource = new CancellationTokenSource();
+            var streamingRequest = new StreamingRequestDto
+            {
+                Id = itemId,
+                Container = container,
+                Static = @static ?? true,
+                Params = @params,
+                Tag = tag,
+                DeviceProfileId = deviceProfileId,
+                PlaySessionId = playSessionId,
+                SegmentContainer = segmentContainer,
+                SegmentLength = segmentLength,
+                MinSegments = minSegments,
+                MediaSourceId = mediaSourceId,
+                DeviceId = deviceId,
+                AudioCodec = audioCodec,
+                EnableAutoStreamCopy = enableAutoStreamCopy ?? true,
+                AllowAudioStreamCopy = allowAudioStreamCopy ?? true,
+                AllowVideoStreamCopy = allowVideoStreamCopy ?? true,
+                BreakOnNonKeyFrames = breakOnNonKeyFrames ?? false,
+                AudioSampleRate = audioSampleRate,
+                MaxAudioChannels = maxAudioChannels,
+                AudioBitRate = audioBitRate,
+                MaxAudioBitDepth = maxAudioBitDepth,
+                AudioChannels = audioChannels,
+                Profile = profile,
+                Level = level,
+                Framerate = framerate,
+                MaxFramerate = maxFramerate,
+                CopyTimestamps = copyTimestamps ?? true,
+                StartTimeTicks = startTimeTicks,
+                Width = width,
+                Height = height,
+                VideoBitRate = videoBitRate,
+                SubtitleStreamIndex = subtitleStreamIndex,
+                SubtitleMethod = subtitleMethod,
+                MaxRefFrames = maxRefFrames,
+                MaxVideoBitDepth = maxVideoBitDepth,
+                RequireAvc = requireAvc ?? true,
+                DeInterlace = deInterlace ?? true,
+                RequireNonAnamorphic = requireNonAnamorphic ?? true,
+                TranscodingMaxAudioChannels = transcodingMaxAudioChannels,
+                CpuCoreLimit = cpuCoreLimit,
+                LiveStreamId = liveStreamId,
+                EnableMpegtsM2TsMode = enableMpegtsM2TsMode ?? true,
+                VideoCodec = videoCodec,
+                SubtitleCodec = subtitleCodec,
+                TranscodeReasons = transcodingReasons,
+                AudioStreamIndex = audioStreamIndex,
+                VideoStreamIndex = videoStreamIndex,
+                Context = context,
+                StreamOptions = streamOptions
+            };
+
+            return await GetVariantPlaylistInternal(streamingRequest, "main", cancellationTokenSource)
+                .ConfigureAwait(false);
+        }
+
+        /// <summary>
+        /// Gets a video stream using HTTP live streaming.
+        /// </summary>
+        /// <param name="itemId">The item id.</param>
+        /// <param name="playlistId">The playlist id.</param>
+        /// <param name="segmentId">The segment id.</param>
+        /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param>
+        /// <param name="static">Optional. If true, the original file will be streamed statically without any encoding. Use either no url extension or the original file extension. true/false.</param>
+        /// <param name="params">The streaming parameters.</param>
+        /// <param name="tag">The tag.</param>
+        /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param>
+        /// <param name="playSessionId">The play session id.</param>
+        /// <param name="segmentContainer">The segment container.</param>
+        /// <param name="segmentLength">The segment lenght.</param>
+        /// <param name="minSegments">The minimum number of segments.</param>
+        /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param>
+        /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param>
+        /// <param name="audioCodec">Optional. Specify a audio codec to encode to, e.g. mp3. If omitted the server will auto-select using the url's extension. Options: aac, mp3, vorbis, wma.</param>
+        /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param>
+        /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param>
+        /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param>
+        /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param>
+        /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param>
+        /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param>
+        /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param>
+        /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param>
+        /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param>
+        /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param>
+        /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param>
+        /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param>
+        /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param>
+        /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param>
+        /// <param name="maxRefFrames">Optional.</param>
+        /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param>
+        /// <param name="requireAvc">Optional. Whether to require avc.</param>
+        /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param>
+        /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param>
+        /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param>
+        /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param>
+        /// <param name="liveStreamId">The live stream id.</param>
+        /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param>
+        /// <param name="videoCodec">Optional. Specify a video codec to encode to, e.g. h264. If omitted the server will auto-select using the url's extension. Options: h265, h264, mpeg4, theora, vpx, wmv.</param>
+        /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param>
+        /// <param name="transcodingReasons">Optional. The transcoding reason.</param>
+        /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param>
+        /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param>
+        /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param>
+        /// <param name="streamOptions">Optional. The streaming options.</param>
+        /// <response code="200">Video stream returned.</response>
+        /// <returns>A <see cref="FileResult"/> containing the audio file.</returns>
+        [HttpGet("/Videos/{itemId}/hls1/{playlistId}/{segmentId}.{container}")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [SuppressMessage("Microsoft.Performance", "CA1801:ReviewUnusedParameters", MessageId = "playlistId", Justification = "Imported from ServiceStack")]
+        public async Task<ActionResult> GetHlsVideoSegment(
+            [FromRoute] Guid itemId,
+            [FromRoute] string playlistId,
+            [FromRoute] int segmentId,
+            [FromRoute] string container,
+            [FromQuery] bool? @static,
+            [FromQuery] string? @params,
+            [FromQuery] string? tag,
+            [FromQuery] string? deviceProfileId,
+            [FromQuery] string? playSessionId,
+            [FromQuery] string? segmentContainer,
+            [FromQuery] int? segmentLength,
+            [FromQuery] int? minSegments,
+            [FromQuery] string? mediaSourceId,
+            [FromQuery] string? deviceId,
+            [FromQuery] string? audioCodec,
+            [FromQuery] bool? enableAutoStreamCopy,
+            [FromQuery] bool? allowVideoStreamCopy,
+            [FromQuery] bool? allowAudioStreamCopy,
+            [FromQuery] bool? breakOnNonKeyFrames,
+            [FromQuery] int? audioSampleRate,
+            [FromQuery] int? maxAudioBitDepth,
+            [FromQuery] int? audioBitRate,
+            [FromQuery] int? audioChannels,
+            [FromQuery] int? maxAudioChannels,
+            [FromQuery] string? profile,
+            [FromQuery] string? level,
+            [FromQuery] float? framerate,
+            [FromQuery] float? maxFramerate,
+            [FromQuery] bool? copyTimestamps,
+            [FromQuery] long? startTimeTicks,
+            [FromQuery] int? width,
+            [FromQuery] int? height,
+            [FromQuery] int? videoBitRate,
+            [FromQuery] int? subtitleStreamIndex,
+            [FromQuery] SubtitleDeliveryMethod subtitleMethod,
+            [FromQuery] int? maxRefFrames,
+            [FromQuery] int? maxVideoBitDepth,
+            [FromQuery] bool? requireAvc,
+            [FromQuery] bool? deInterlace,
+            [FromQuery] bool? requireNonAnamorphic,
+            [FromQuery] int? transcodingMaxAudioChannels,
+            [FromQuery] int? cpuCoreLimit,
+            [FromQuery] string? liveStreamId,
+            [FromQuery] bool? enableMpegtsM2TsMode,
+            [FromQuery] string? videoCodec,
+            [FromQuery] string? subtitleCodec,
+            [FromQuery] string? transcodingReasons,
+            [FromQuery] int? audioStreamIndex,
+            [FromQuery] int? videoStreamIndex,
+            [FromQuery] EncodingContext context,
+            [FromQuery] Dictionary<string, string> streamOptions)
+        {
+            var streamingRequest = new VideoRequestDto
+            {
+                Id = itemId,
+                Container = container,
+                Static = @static ?? true,
+                Params = @params,
+                Tag = tag,
+                DeviceProfileId = deviceProfileId,
+                PlaySessionId = playSessionId,
+                SegmentContainer = segmentContainer,
+                SegmentLength = segmentLength,
+                MinSegments = minSegments,
+                MediaSourceId = mediaSourceId,
+                DeviceId = deviceId,
+                AudioCodec = audioCodec,
+                EnableAutoStreamCopy = enableAutoStreamCopy ?? true,
+                AllowAudioStreamCopy = allowAudioStreamCopy ?? true,
+                AllowVideoStreamCopy = allowVideoStreamCopy ?? true,
+                BreakOnNonKeyFrames = breakOnNonKeyFrames ?? false,
+                AudioSampleRate = audioSampleRate,
+                MaxAudioChannels = maxAudioChannels,
+                AudioBitRate = audioBitRate,
+                MaxAudioBitDepth = maxAudioBitDepth,
+                AudioChannels = audioChannels,
+                Profile = profile,
+                Level = level,
+                Framerate = framerate,
+                MaxFramerate = maxFramerate,
+                CopyTimestamps = copyTimestamps ?? true,
+                StartTimeTicks = startTimeTicks,
+                Width = width,
+                Height = height,
+                VideoBitRate = videoBitRate,
+                SubtitleStreamIndex = subtitleStreamIndex,
+                SubtitleMethod = subtitleMethod,
+                MaxRefFrames = maxRefFrames,
+                MaxVideoBitDepth = maxVideoBitDepth,
+                RequireAvc = requireAvc ?? true,
+                DeInterlace = deInterlace ?? true,
+                RequireNonAnamorphic = requireNonAnamorphic ?? true,
+                TranscodingMaxAudioChannels = transcodingMaxAudioChannels,
+                CpuCoreLimit = cpuCoreLimit,
+                LiveStreamId = liveStreamId,
+                EnableMpegtsM2TsMode = enableMpegtsM2TsMode ?? true,
+                VideoCodec = videoCodec,
+                SubtitleCodec = subtitleCodec,
+                TranscodeReasons = transcodingReasons,
+                AudioStreamIndex = audioStreamIndex,
+                VideoStreamIndex = videoStreamIndex,
+                Context = context,
+                StreamOptions = streamOptions
+            };
+
+            return await GetDynamicSegment(streamingRequest, segmentId)
+                .ConfigureAwait(false);
+        }
+
+        /// <summary>
+        /// Gets a video stream using HTTP live streaming.
+        /// </summary>
+        /// <param name="itemId">The item id.</param>
+        /// <param name="playlistId">The playlist id.</param>
+        /// <param name="segmentId">The segment id.</param>
+        /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param>
+        /// <param name="static">Optional. If true, the original file will be streamed statically without any encoding. Use either no url extension or the original file extension. true/false.</param>
+        /// <param name="params">The streaming parameters.</param>
+        /// <param name="tag">The tag.</param>
+        /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param>
+        /// <param name="playSessionId">The play session id.</param>
+        /// <param name="segmentContainer">The segment container.</param>
+        /// <param name="segmentLength">The segment lenght.</param>
+        /// <param name="minSegments">The minimum number of segments.</param>
+        /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param>
+        /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param>
+        /// <param name="audioCodec">Optional. Specify a audio codec to encode to, e.g. mp3. If omitted the server will auto-select using the url's extension. Options: aac, mp3, vorbis, wma.</param>
+        /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param>
+        /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param>
+        /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param>
+        /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param>
+        /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param>
+        /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param>
+        /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param>
+        /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param>
+        /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param>
+        /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
+        /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param>
+        /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param>
+        /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param>
+        /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param>
+        /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param>
+        /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param>
+        /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param>
+        /// <param name="maxRefFrames">Optional.</param>
+        /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param>
+        /// <param name="requireAvc">Optional. Whether to require avc.</param>
+        /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param>
+        /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param>
+        /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param>
+        /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param>
+        /// <param name="liveStreamId">The live stream id.</param>
+        /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param>
+        /// <param name="videoCodec">Optional. Specify a video codec to encode to, e.g. h264. If omitted the server will auto-select using the url's extension. Options: h265, h264, mpeg4, theora, vpx, wmv.</param>
+        /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param>
+        /// <param name="transcodingReasons">Optional. The transcoding reason.</param>
+        /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param>
+        /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param>
+        /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param>
+        /// <param name="streamOptions">Optional. The streaming options.</param>
+        /// <response code="200">Video stream returned.</response>
+        /// <returns>A <see cref="FileResult"/> containing the audio file.</returns>
+        [HttpGet("/Audio/{itemId}/hls1/{playlistId}/{segmentId}.{container}")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [SuppressMessage("Microsoft.Performance", "CA1801:ReviewUnusedParameters", MessageId = "playlistId", Justification = "Imported from ServiceStack")]
+        public async Task<ActionResult> GetHlsAudioSegment(
+            [FromRoute] Guid itemId,
+            [FromRoute] string playlistId,
+            [FromRoute] int segmentId,
+            [FromRoute] string container,
+            [FromQuery] bool? @static,
+            [FromQuery] string? @params,
+            [FromQuery] string? tag,
+            [FromQuery] string? deviceProfileId,
+            [FromQuery] string? playSessionId,
+            [FromQuery] string? segmentContainer,
+            [FromQuery] int? segmentLength,
+            [FromQuery] int? minSegments,
+            [FromQuery] string? mediaSourceId,
+            [FromQuery] string? deviceId,
+            [FromQuery] string? audioCodec,
+            [FromQuery] bool? enableAutoStreamCopy,
+            [FromQuery] bool? allowVideoStreamCopy,
+            [FromQuery] bool? allowAudioStreamCopy,
+            [FromQuery] bool? breakOnNonKeyFrames,
+            [FromQuery] int? audioSampleRate,
+            [FromQuery] int? maxAudioBitDepth,
+            [FromQuery] int? audioBitRate,
+            [FromQuery] int? audioChannels,
+            [FromQuery] int? maxAudioChannels,
+            [FromQuery] string? profile,
+            [FromQuery] string? level,
+            [FromQuery] float? framerate,
+            [FromQuery] float? maxFramerate,
+            [FromQuery] bool? copyTimestamps,
+            [FromQuery] long? startTimeTicks,
+            [FromQuery] int? width,
+            [FromQuery] int? height,
+            [FromQuery] int? videoBitRate,
+            [FromQuery] int? subtitleStreamIndex,
+            [FromQuery] SubtitleDeliveryMethod subtitleMethod,
+            [FromQuery] int? maxRefFrames,
+            [FromQuery] int? maxVideoBitDepth,
+            [FromQuery] bool? requireAvc,
+            [FromQuery] bool? deInterlace,
+            [FromQuery] bool? requireNonAnamorphic,
+            [FromQuery] int? transcodingMaxAudioChannels,
+            [FromQuery] int? cpuCoreLimit,
+            [FromQuery] string? liveStreamId,
+            [FromQuery] bool? enableMpegtsM2TsMode,
+            [FromQuery] string? videoCodec,
+            [FromQuery] string? subtitleCodec,
+            [FromQuery] string? transcodingReasons,
+            [FromQuery] int? audioStreamIndex,
+            [FromQuery] int? videoStreamIndex,
+            [FromQuery] EncodingContext context,
+            [FromQuery] Dictionary<string, string> streamOptions)
+        {
+            var streamingRequest = new StreamingRequestDto
+            {
+                Id = itemId,
+                Container = container,
+                Static = @static ?? true,
+                Params = @params,
+                Tag = tag,
+                DeviceProfileId = deviceProfileId,
+                PlaySessionId = playSessionId,
+                SegmentContainer = segmentContainer,
+                SegmentLength = segmentLength,
+                MinSegments = minSegments,
+                MediaSourceId = mediaSourceId,
+                DeviceId = deviceId,
+                AudioCodec = audioCodec,
+                EnableAutoStreamCopy = enableAutoStreamCopy ?? true,
+                AllowAudioStreamCopy = allowAudioStreamCopy ?? true,
+                AllowVideoStreamCopy = allowVideoStreamCopy ?? true,
+                BreakOnNonKeyFrames = breakOnNonKeyFrames ?? false,
+                AudioSampleRate = audioSampleRate,
+                MaxAudioChannels = maxAudioChannels,
+                AudioBitRate = audioBitRate,
+                MaxAudioBitDepth = maxAudioBitDepth,
+                AudioChannels = audioChannels,
+                Profile = profile,
+                Level = level,
+                Framerate = framerate,
+                MaxFramerate = maxFramerate,
+                CopyTimestamps = copyTimestamps ?? true,
+                StartTimeTicks = startTimeTicks,
+                Width = width,
+                Height = height,
+                VideoBitRate = videoBitRate,
+                SubtitleStreamIndex = subtitleStreamIndex,
+                SubtitleMethod = subtitleMethod,
+                MaxRefFrames = maxRefFrames,
+                MaxVideoBitDepth = maxVideoBitDepth,
+                RequireAvc = requireAvc ?? true,
+                DeInterlace = deInterlace ?? true,
+                RequireNonAnamorphic = requireNonAnamorphic ?? true,
+                TranscodingMaxAudioChannels = transcodingMaxAudioChannels,
+                CpuCoreLimit = cpuCoreLimit,
+                LiveStreamId = liveStreamId,
+                EnableMpegtsM2TsMode = enableMpegtsM2TsMode ?? true,
+                VideoCodec = videoCodec,
+                SubtitleCodec = subtitleCodec,
+                TranscodeReasons = transcodingReasons,
+                AudioStreamIndex = audioStreamIndex,
+                VideoStreamIndex = videoStreamIndex,
+                Context = context,
+                StreamOptions = streamOptions
+            };
+
+            return await GetDynamicSegment(streamingRequest, segmentId)
+                .ConfigureAwait(false);
+        }
+
+        private async Task<ActionResult> GetMasterPlaylistInternal(
+            StreamingRequestDto streamingRequest,
+            bool isHeadRequest,
+            bool enableAdaptiveBitrateStreaming,
+            CancellationTokenSource cancellationTokenSource)
+        {
+            using var state = await StreamingHelpers.GetStreamingState(
+                    streamingRequest,
+                    Request,
+                    _authContext,
+                    _mediaSourceManager,
+                    _userManager,
+                    _libraryManager,
+                    _serverConfigurationManager,
+                    _mediaEncoder,
+                    _fileSystem,
+                    _subtitleEncoder,
+                    _configuration,
+                    _dlnaManager,
+                    _deviceManager,
+                    _transcodingJobHelper,
+                    _transcodingJobType,
+                    cancellationTokenSource.Token)
+                .ConfigureAwait(false);
+
+            Response.Headers.Add(HeaderNames.Expires, "0");
+            if (isHeadRequest)
+            {
+                return new FileContentResult(Encoding.UTF8.GetBytes(string.Empty), MimeTypes.GetMimeType("playlist.m3u8"));
+            }
+
+            var totalBitrate = state.OutputAudioBitrate ?? 0 + state.OutputVideoBitrate ?? 0;
+
+            var builder = new StringBuilder();
+
+            builder.AppendLine("#EXTM3U");
+
+            var isLiveStream = state.IsSegmentedLiveStream;
+
+            var queryString = Request.Query.ToString();
+
+            // from universal audio service
+            if (queryString.IndexOf("SegmentContainer", StringComparison.OrdinalIgnoreCase) == -1 && !string.IsNullOrWhiteSpace(state.Request.SegmentContainer))
+            {
+                queryString += "&SegmentContainer=" + state.Request.SegmentContainer;
+            }
+
+            // from universal audio service
+            if (!string.IsNullOrWhiteSpace(state.Request.TranscodeReasons) && queryString.IndexOf("TranscodeReasons=", StringComparison.OrdinalIgnoreCase) == -1)
+            {
+                queryString += "&TranscodeReasons=" + state.Request.TranscodeReasons;
+            }
+
+            // Main stream
+            var playlistUrl = isLiveStream ? "live.m3u8" : "main.m3u8";
+
+            playlistUrl += queryString;
+
+            var subtitleStreams = state.MediaSource
+                .MediaStreams
+                .Where(i => i.IsTextSubtitleStream)
+                .ToList();
+
+            var subtitleGroup = subtitleStreams.Count > 0 && (state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Hls || state.VideoRequest!.EnableSubtitlesInManifest)
+                ? "subs"
+                : null;
+
+            // If we're burning in subtitles then don't add additional subs to the manifest
+            if (state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
+            {
+                subtitleGroup = null;
+            }
+
+            if (!string.IsNullOrWhiteSpace(subtitleGroup))
+            {
+                AddSubtitles(state, subtitleStreams, builder);
+            }
+
+            AppendPlaylist(builder, state, playlistUrl, totalBitrate, subtitleGroup);
+
+            if (EnableAdaptiveBitrateStreaming(state, isLiveStream, enableAdaptiveBitrateStreaming))
+            {
+                var requestedVideoBitrate = state.VideoRequest == null ? 0 : state.VideoRequest.VideoBitRate ?? 0;
+
+                // By default, vary by just 200k
+                var variation = GetBitrateVariation(totalBitrate);
+
+                var newBitrate = totalBitrate - variation;
+                var variantUrl = ReplaceBitrate(playlistUrl, requestedVideoBitrate, requestedVideoBitrate - variation);
+                AppendPlaylist(builder, state, variantUrl, newBitrate, subtitleGroup);
+
+                variation *= 2;
+                newBitrate = totalBitrate - variation;
+                variantUrl = ReplaceBitrate(playlistUrl, requestedVideoBitrate, requestedVideoBitrate - variation);
+                AppendPlaylist(builder, state, variantUrl, newBitrate, subtitleGroup);
+            }
+
+            return new FileContentResult(Encoding.UTF8.GetBytes(builder.ToString()), MimeTypes.GetMimeType("playlist.m3u8"));
+        }
+
+        private async Task<ActionResult> GetVariantPlaylistInternal(StreamingRequestDto streamingRequest, string name, CancellationTokenSource cancellationTokenSource)
+        {
+            using var state = await StreamingHelpers.GetStreamingState(
+                    streamingRequest,
+                    Request,
+                    _authContext,
+                    _mediaSourceManager,
+                    _userManager,
+                    _libraryManager,
+                    _serverConfigurationManager,
+                    _mediaEncoder,
+                    _fileSystem,
+                    _subtitleEncoder,
+                    _configuration,
+                    _dlnaManager,
+                    _deviceManager,
+                    _transcodingJobHelper,
+                    _transcodingJobType,
+                    cancellationTokenSource.Token)
+                .ConfigureAwait(false);
+
+            Response.Headers.Add(HeaderNames.Expires, "0");
+
+            var segmentLengths = GetSegmentLengths(state);
+
+            var builder = new StringBuilder();
+
+            builder.AppendLine("#EXTM3U");
+            builder.AppendLine("#EXT-X-PLAYLIST-TYPE:VOD");
+            builder.AppendLine("#EXT-X-VERSION:3");
+            builder.AppendLine("#EXT-X-TARGETDURATION:" + Math.Ceiling(segmentLengths.Length > 0 ? segmentLengths.Max() : state.SegmentLength).ToString(CultureInfo.InvariantCulture));
+            builder.AppendLine("#EXT-X-MEDIA-SEQUENCE:0");
+
+            var queryString = Request.QueryString;
+            var index = 0;
+
+            var segmentExtension = GetSegmentFileExtension(streamingRequest.SegmentContainer);
+
+            foreach (var length in segmentLengths)
+            {
+                builder.AppendLine("#EXTINF:" + length.ToString("0.0000", CultureInfo.InvariantCulture) + ", nodesc");
+                builder.AppendLine(
+                    string.Format(
+                        CultureInfo.InvariantCulture,
+                        "hls1/{0}/{1}{2}{3}",
+                        name,
+                        index.ToString(CultureInfo.InvariantCulture),
+                        segmentExtension,
+                        queryString));
+
+                index++;
+            }
+
+            builder.AppendLine("#EXT-X-ENDLIST");
+            return new FileContentResult(Encoding.UTF8.GetBytes(builder.ToString()), MimeTypes.GetMimeType("playlist.m3u8"));
+        }
+
+        private async Task<ActionResult> GetDynamicSegment(StreamingRequestDto streamingRequest, int segmentId)
+        {
+            if ((streamingRequest.StartTimeTicks ?? 0) > 0)
+            {
+                throw new ArgumentException("StartTimeTicks is not allowed.");
+            }
+
+            var cancellationTokenSource = new CancellationTokenSource();
+            var cancellationToken = cancellationTokenSource.Token;
+
+            using var state = await StreamingHelpers.GetStreamingState(
+                    streamingRequest,
+                    Request,
+                    _authContext,
+                    _mediaSourceManager,
+                    _userManager,
+                    _libraryManager,
+                    _serverConfigurationManager,
+                    _mediaEncoder,
+                    _fileSystem,
+                    _subtitleEncoder,
+                    _configuration,
+                    _dlnaManager,
+                    _deviceManager,
+                    _transcodingJobHelper,
+                    _transcodingJobType,
+                    cancellationTokenSource.Token)
+                .ConfigureAwait(false);
+
+            var playlistPath = Path.ChangeExtension(state.OutputFilePath, ".m3u8");
+
+            var segmentPath = GetSegmentPath(state, playlistPath, segmentId);
+
+            var segmentExtension = GetSegmentFileExtension(state.Request.SegmentContainer);
+
+            TranscodingJobDto? job;
+
+            if (System.IO.File.Exists(segmentPath))
+            {
+                job = _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, _transcodingJobType);
+                _logger.LogDebug("returning {0} [it exists, try 1]", segmentPath);
+                return await GetSegmentResult(state, playlistPath, segmentPath, segmentExtension, segmentId, job, cancellationToken).ConfigureAwait(false);
+            }
+
+            var transcodingLock = _transcodingJobHelper.GetTranscodingLock(playlistPath);
+            await transcodingLock.WaitAsync(cancellationTokenSource.Token).ConfigureAwait(false);
+            var released = false;
+            var startTranscoding = false;
+
+            try
+            {
+                if (System.IO.File.Exists(segmentPath))
+                {
+                    job = _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, _transcodingJobType);
+                    transcodingLock.Release();
+                    released = true;
+                    _logger.LogDebug("returning {0} [it exists, try 2]", segmentPath);
+                    return await GetSegmentResult(state, playlistPath, segmentPath, segmentExtension, segmentId, job, cancellationToken).ConfigureAwait(false);
+                }
+                else
+                {
+                    var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath, segmentExtension);
+                    var segmentGapRequiringTranscodingChange = 24 / state.SegmentLength;
+
+                    if (currentTranscodingIndex == null)
+                    {
+                        _logger.LogDebug("Starting transcoding because currentTranscodingIndex=null");
+                        startTranscoding = true;
+                    }
+                    else if (segmentId < currentTranscodingIndex.Value)
+                    {
+                        _logger.LogDebug("Starting transcoding because requestedIndex={0} and currentTranscodingIndex={1}", segmentId, currentTranscodingIndex);
+                        startTranscoding = true;
+                    }
+                    else if (segmentId - currentTranscodingIndex.Value > segmentGapRequiringTranscodingChange)
+                    {
+                        _logger.LogDebug("Starting transcoding because segmentGap is {0} and max allowed gap is {1}. requestedIndex={2}", segmentId - currentTranscodingIndex.Value, segmentGapRequiringTranscodingChange, segmentId);
+                        startTranscoding = true;
+                    }
+
+                    if (startTranscoding)
+                    {
+                        // If the playlist doesn't already exist, startup ffmpeg
+                        try
+                        {
+                            await _transcodingJobHelper.KillTranscodingJobs(streamingRequest.DeviceId, streamingRequest.PlaySessionId, p => false)
+                                .ConfigureAwait(false);
+
+                            if (currentTranscodingIndex.HasValue)
+                            {
+                                DeleteLastFile(playlistPath, segmentExtension, 0);
+                            }
+
+                            streamingRequest.StartTimeTicks = GetStartPositionTicks(state, segmentId);
+
+                            state.WaitForPath = segmentPath;
+                            var encodingOptions = _serverConfigurationManager.GetEncodingOptions();
+                            job = await _transcodingJobHelper.StartFfMpeg(
+                                state,
+                                playlistPath,
+                                GetCommandLineArguments(playlistPath, encodingOptions, state, true, segmentId),
+                                Request,
+                                _transcodingJobType,
+                                cancellationTokenSource).ConfigureAwait(false);
+                        }
+                        catch
+                        {
+                            state.Dispose();
+                            throw;
+                        }
+
+                        // await WaitForMinimumSegmentCount(playlistPath, 1, cancellationTokenSource.Token).ConfigureAwait(false);
+                    }
+                    else
+                    {
+                        job = _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, _transcodingJobType);
+                        if (job?.TranscodingThrottler != null)
+                        {
+                            await job.TranscodingThrottler.UnpauseTranscoding().ConfigureAwait(false);
+                        }
+                    }
+                }
+            }
+            finally
+            {
+                if (!released)
+                {
+                    transcodingLock.Release();
+                }
+            }
+
+            _logger.LogDebug("returning {0} [general case]", segmentPath);
+            job ??= _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, _transcodingJobType);
+            return await GetSegmentResult(state, playlistPath, segmentPath, segmentExtension, segmentId, job, cancellationToken).ConfigureAwait(false);
+        }
+
+        private void AddSubtitles(StreamState state, IEnumerable<MediaStream> subtitles, StringBuilder builder)
+        {
+            var selectedIndex = state.SubtitleStream == null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Hls ? (int?)null : state.SubtitleStream.Index;
+
+            foreach (var stream in subtitles)
+            {
+                const string format = "#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID=\"subs\",NAME=\"{0}\",DEFAULT={1},FORCED={2},AUTOSELECT=YES,URI=\"{3}\",LANGUAGE=\"{4}\"";
+
+                var name = stream.DisplayTitle;
+
+                var isDefault = selectedIndex.HasValue && selectedIndex.Value == stream.Index;
+                var isForced = stream.IsForced;
+
+                var url = string.Format(
+                    CultureInfo.InvariantCulture,
+                    "{0}/Subtitles/{1}/subtitles.m3u8?SegmentLength={2}&api_key={3}",
+                    state.Request.MediaSourceId,
+                    stream.Index.ToString(CultureInfo.InvariantCulture),
+                    30.ToString(CultureInfo.InvariantCulture),
+                    ClaimHelpers.GetToken(Request.HttpContext.User));
+
+                var line = string.Format(
+                    CultureInfo.InvariantCulture,
+                    format,
+                    name,
+                    isDefault ? "YES" : "NO",
+                    isForced ? "YES" : "NO",
+                    url,
+                    stream.Language ?? "Unknown");
+
+                builder.AppendLine(line);
+            }
+        }
+
+        private void AppendPlaylist(StringBuilder builder, StreamState state, string url, int bitrate, string? subtitleGroup)
+        {
+            builder.Append("#EXT-X-STREAM-INF:BANDWIDTH=")
+                .Append(bitrate.ToString(CultureInfo.InvariantCulture))
+                .Append(",AVERAGE-BANDWIDTH=")
+                .Append(bitrate.ToString(CultureInfo.InvariantCulture));
+
+            AppendPlaylistCodecsField(builder, state);
+
+            AppendPlaylistResolutionField(builder, state);
+
+            AppendPlaylistFramerateField(builder, state);
+
+            if (!string.IsNullOrWhiteSpace(subtitleGroup))
+            {
+                builder.Append(",SUBTITLES=\"")
+                    .Append(subtitleGroup)
+                    .Append('"');
+            }
+
+            builder.Append(Environment.NewLine);
+            builder.AppendLine(url);
+        }
+
+        /// <summary>
+        /// Appends a CODECS field containing formatted strings of
+        /// the active streams output video and audio codecs.
+        /// </summary>
+        /// <seealso cref="AppendPlaylist(StringBuilder, StreamState, string, int, string)"/>
+        /// <seealso cref="GetPlaylistVideoCodecs(StreamState, string, int)"/>
+        /// <seealso cref="GetPlaylistAudioCodecs(StreamState)"/>
+        /// <param name="builder">StringBuilder to append the field to.</param>
+        /// <param name="state">StreamState of the current stream.</param>
+        private void AppendPlaylistCodecsField(StringBuilder builder, StreamState state)
+        {
+            // Video
+            string videoCodecs = string.Empty;
+            int? videoCodecLevel = GetOutputVideoCodecLevel(state);
+            if (!string.IsNullOrEmpty(state.ActualOutputVideoCodec) && videoCodecLevel.HasValue)
+            {
+                videoCodecs = GetPlaylistVideoCodecs(state, state.ActualOutputVideoCodec, videoCodecLevel.Value);
+            }
+
+            // Audio
+            string audioCodecs = string.Empty;
+            if (!string.IsNullOrEmpty(state.ActualOutputAudioCodec))
+            {
+                audioCodecs = GetPlaylistAudioCodecs(state);
+            }
+
+            StringBuilder codecs = new StringBuilder();
+
+            codecs.Append(videoCodecs)
+                .Append(',')
+                .Append(audioCodecs);
+
+            if (codecs.Length > 1)
+            {
+                builder.Append(",CODECS=\"")
+                    .Append(codecs)
+                    .Append('"');
+            }
+        }
+
+        /// <summary>
+        /// Appends a RESOLUTION field containing the resolution of the output stream.
+        /// </summary>
+        /// <seealso cref="AppendPlaylist(StringBuilder, StreamState, string, int, string)"/>
+        /// <param name="builder">StringBuilder to append the field to.</param>
+        /// <param name="state">StreamState of the current stream.</param>
+        private void AppendPlaylistResolutionField(StringBuilder builder, StreamState state)
+        {
+            if (state.OutputWidth.HasValue && state.OutputHeight.HasValue)
+            {
+                builder.Append(",RESOLUTION=")
+                    .Append(state.OutputWidth.GetValueOrDefault())
+                    .Append('x')
+                    .Append(state.OutputHeight.GetValueOrDefault());
+            }
+        }
+
+        /// <summary>
+        /// Appends a FRAME-RATE field containing the framerate of the output stream.
+        /// </summary>
+        /// <seealso cref="AppendPlaylist(StringBuilder, StreamState, string, int, string)"/>
+        /// <param name="builder">StringBuilder to append the field to.</param>
+        /// <param name="state">StreamState of the current stream.</param>
+        private void AppendPlaylistFramerateField(StringBuilder builder, StreamState state)
+        {
+            double? framerate = null;
+            if (state.TargetFramerate.HasValue)
+            {
+                framerate = Math.Round(state.TargetFramerate.GetValueOrDefault(), 3);
+            }
+            else if (state.VideoStream?.RealFrameRate != null)
+            {
+                framerate = Math.Round(state.VideoStream.RealFrameRate.GetValueOrDefault(), 3);
+            }
+
+            if (framerate.HasValue)
+            {
+                builder.Append(",FRAME-RATE=")
+                    .Append(framerate.Value);
+            }
+        }
+
+        private bool EnableAdaptiveBitrateStreaming(StreamState state, bool isLiveStream, bool enableAdaptiveBitrateStreaming)
+        {
+            // Within the local network this will likely do more harm than good.
+            var ip = RequestHelpers.NormalizeIp(Request.HttpContext.Connection.RemoteIpAddress).ToString();
+            if (_networkManager.IsInLocalNetwork(ip))
+            {
+                return false;
+            }
+
+            if (!enableAdaptiveBitrateStreaming)
+            {
+                return false;
+            }
+
+            if (isLiveStream || string.IsNullOrWhiteSpace(state.MediaPath))
+            {
+                // Opening live streams is so slow it's not even worth it
+                return false;
+            }
+
+            if (EncodingHelper.IsCopyCodec(state.OutputVideoCodec))
+            {
+                return false;
+            }
+
+            if (EncodingHelper.IsCopyCodec(state.OutputAudioCodec))
+            {
+                return false;
+            }
+
+            if (!state.IsOutputVideo)
+            {
+                return false;
+            }
+
+            // Having problems in android
+            return false;
+            // return state.VideoRequest.VideoBitRate.HasValue;
+        }
+
+        /// <summary>
+        /// Get the H.26X level of the output video stream.
+        /// </summary>
+        /// <param name="state">StreamState of the current stream.</param>
+        /// <returns>H.26X level of the output video stream.</returns>
+        private int? GetOutputVideoCodecLevel(StreamState state)
+        {
+            string? levelString;
+            if (EncodingHelper.IsCopyCodec(state.OutputVideoCodec)
+                && state.VideoStream.Level.HasValue)
+            {
+                levelString = state.VideoStream?.Level.ToString();
+            }
+            else
+            {
+                levelString = state.GetRequestedLevel(state.ActualOutputVideoCodec);
+            }
+
+            if (int.TryParse(levelString, NumberStyles.Integer, CultureInfo.InvariantCulture, out var parsedLevel))
+            {
+                return parsedLevel;
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Gets a formatted string of the output audio codec, for use in the CODECS field.
+        /// </summary>
+        /// <seealso cref="AppendPlaylistCodecsField(StringBuilder, StreamState)"/>
+        /// <seealso cref="GetPlaylistVideoCodecs(StreamState, string, int)"/>
+        /// <param name="state">StreamState of the current stream.</param>
+        /// <returns>Formatted audio codec string.</returns>
+        private string GetPlaylistAudioCodecs(StreamState state)
+        {
+            if (string.Equals(state.ActualOutputAudioCodec, "aac", StringComparison.OrdinalIgnoreCase))
+            {
+                string? profile = state.GetRequestedProfiles("aac").FirstOrDefault();
+                return HlsCodecStringHelpers.GetAACString(profile);
+            }
+
+            if (string.Equals(state.ActualOutputAudioCodec, "mp3", StringComparison.OrdinalIgnoreCase))
+            {
+                return HlsCodecStringHelpers.GetMP3String();
+            }
+
+            if (string.Equals(state.ActualOutputAudioCodec, "ac3", StringComparison.OrdinalIgnoreCase))
+            {
+                return HlsCodecStringHelpers.GetAC3String();
+            }
+
+            if (string.Equals(state.ActualOutputAudioCodec, "eac3", StringComparison.OrdinalIgnoreCase))
+            {
+                return HlsCodecStringHelpers.GetEAC3String();
+            }
+
+            return string.Empty;
+        }
+
+        /// <summary>
+        /// Gets a formatted string of the output video codec, for use in the CODECS field.
+        /// </summary>
+        /// <seealso cref="AppendPlaylistCodecsField(StringBuilder, StreamState)"/>
+        /// <seealso cref="GetPlaylistAudioCodecs(StreamState)"/>
+        /// <param name="state">StreamState of the current stream.</param>
+        /// <param name="codec">Video codec.</param>
+        /// <param name="level">Video level.</param>
+        /// <returns>Formatted video codec string.</returns>
+        private string GetPlaylistVideoCodecs(StreamState state, string codec, int level)
+        {
+            if (level == 0)
+            {
+                // This is 0 when there's no requested H.26X level in the device profile
+                // and the source is not encoded in H.26X
+                _logger.LogError("Got invalid H.26X level when building CODECS field for HLS master playlist");
+                return string.Empty;
+            }
+
+            if (string.Equals(codec, "h264", StringComparison.OrdinalIgnoreCase))
+            {
+                string profile = state.GetRequestedProfiles("h264").FirstOrDefault();
+                return HlsCodecStringHelpers.GetH264String(profile, level);
+            }
+
+            if (string.Equals(codec, "h265", StringComparison.OrdinalIgnoreCase)
+                || string.Equals(codec, "hevc", StringComparison.OrdinalIgnoreCase))
+            {
+                string profile = state.GetRequestedProfiles("h265").FirstOrDefault();
+
+                return HlsCodecStringHelpers.GetH265String(profile, level);
+            }
+
+            return string.Empty;
+        }
+
+        private int GetBitrateVariation(int bitrate)
+        {
+            // By default, vary by just 50k
+            var variation = 50000;
+
+            if (bitrate >= 10000000)
+            {
+                variation = 2000000;
+            }
+            else if (bitrate >= 5000000)
+            {
+                variation = 1500000;
+            }
+            else if (bitrate >= 3000000)
+            {
+                variation = 1000000;
+            }
+            else if (bitrate >= 2000000)
+            {
+                variation = 500000;
+            }
+            else if (bitrate >= 1000000)
+            {
+                variation = 300000;
+            }
+            else if (bitrate >= 600000)
+            {
+                variation = 200000;
+            }
+            else if (bitrate >= 400000)
+            {
+                variation = 100000;
+            }
+
+            return variation;
+        }
+
+        private string ReplaceBitrate(string url, int oldValue, int newValue)
+        {
+            return url.Replace(
+                "videobitrate=" + oldValue.ToString(CultureInfo.InvariantCulture),
+                "videobitrate=" + newValue.ToString(CultureInfo.InvariantCulture),
+                StringComparison.OrdinalIgnoreCase);
+        }
+
+        private double[] GetSegmentLengths(StreamState state)
+        {
+            var result = new List<double>();
+
+            var ticks = state.RunTimeTicks ?? 0;
+
+            var segmentLengthTicks = TimeSpan.FromSeconds(state.SegmentLength).Ticks;
+
+            while (ticks > 0)
+            {
+                var length = ticks >= segmentLengthTicks ? segmentLengthTicks : ticks;
+
+                result.Add(TimeSpan.FromTicks(length).TotalSeconds);
+
+                ticks -= length;
+            }
+
+            return result.ToArray();
+        }
+
+        private string GetCommandLineArguments(string outputPath, EncodingOptions encodingOptions, StreamState state, bool isEncoding, int startNumber)
+        {
+            var videoCodec = _encodingHelper.GetVideoEncoder(state, encodingOptions);
+
+            var threads = _encodingHelper.GetNumberOfThreads(state, encodingOptions, videoCodec);
+
+            if (state.BaseRequest.BreakOnNonKeyFrames)
+            {
+                // FIXME: this is actually a workaround, as ideally it really should be the client which decides whether non-keyframe
+                //        breakpoints are supported; but current implementation always uses "ffmpeg input seeking" which is liable
+                //        to produce a missing part of video stream before first keyframe is encountered, which may lead to
+                //        awkward cases like a few starting HLS segments having no video whatsoever, which breaks hls.js
+                _logger.LogInformation("Current HLS implementation doesn't support non-keyframe breaks but one is requested, ignoring that request");
+                state.BaseRequest.BreakOnNonKeyFrames = false;
+            }
+
+            var inputModifier = _encodingHelper.GetInputModifier(state, encodingOptions);
+
+            // If isEncoding is true we're actually starting ffmpeg
+            var startNumberParam = isEncoding ? startNumber.ToString(CultureInfo.InvariantCulture) : "0";
+
+            var mapArgs = state.IsOutputVideo ? _encodingHelper.GetMapArgs(state) : string.Empty;
+
+            var outputTsArg = Path.Combine(Path.GetDirectoryName(outputPath), Path.GetFileNameWithoutExtension(outputPath)) + "%d" + GetSegmentFileExtension(state.Request.SegmentContainer);
+
+            var segmentFormat = GetSegmentFileExtension(state.Request.SegmentContainer).TrimStart('.');
+            if (string.Equals(segmentFormat, "ts", StringComparison.OrdinalIgnoreCase))
+            {
+                segmentFormat = "mpegts";
+            }
+
+            return string.Format(
+                CultureInfo.InvariantCulture,
+                "{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -copyts -avoid_negative_ts disabled -f hls -max_delay 5000000 -hls_time {6} -individual_header_trailer 0 -hls_segment_type {7} -start_number {8} -hls_segment_filename \"{9}\" -hls_playlist_type vod -hls_list_size 0 -y \"{10}\"",
+                inputModifier,
+                _encodingHelper.GetInputArgument(state, encodingOptions),
+                threads,
+                mapArgs,
+                GetVideoArguments(state, encodingOptions, startNumber),
+                GetAudioArguments(state, encodingOptions),
+                state.SegmentLength.ToString(CultureInfo.InvariantCulture),
+                segmentFormat,
+                startNumberParam,
+                outputTsArg,
+                outputPath).Trim();
+        }
+
+        private string GetAudioArguments(StreamState state, EncodingOptions encodingOptions)
+        {
+            var audioCodec = _encodingHelper.GetAudioEncoder(state);
+
+            if (!state.IsOutputVideo)
+            {
+                if (EncodingHelper.IsCopyCodec(audioCodec))
+                {
+                    return "-acodec copy";
+                }
+
+                var audioTranscodeParams = new List<string>();
+
+                audioTranscodeParams.Add("-acodec " + audioCodec);
+
+                if (state.OutputAudioBitrate.HasValue)
+                {
+                    audioTranscodeParams.Add("-ab " + state.OutputAudioBitrate.Value.ToString(CultureInfo.InvariantCulture));
+                }
+
+                if (state.OutputAudioChannels.HasValue)
+                {
+                    audioTranscodeParams.Add("-ac " + state.OutputAudioChannels.Value.ToString(CultureInfo.InvariantCulture));
+                }
+
+                if (state.OutputAudioSampleRate.HasValue)
+                {
+                    audioTranscodeParams.Add("-ar " + state.OutputAudioSampleRate.Value.ToString(CultureInfo.InvariantCulture));
+                }
+
+                audioTranscodeParams.Add("-vn");
+                return string.Join(" ", audioTranscodeParams.ToArray());
+            }
+
+            if (EncodingHelper.IsCopyCodec(audioCodec))
+            {
+                var videoCodec = _encodingHelper.GetVideoEncoder(state, encodingOptions);
+
+                if (EncodingHelper.IsCopyCodec(videoCodec) && state.EnableBreakOnNonKeyFrames(videoCodec))
+                {
+                    return "-codec:a:0 copy -copypriorss:a:0 0";
+                }
+
+                return "-codec:a:0 copy";
+            }
+
+            var args = "-codec:a:0 " + audioCodec;
+
+            var channels = state.OutputAudioChannels;
+
+            if (channels.HasValue)
+            {
+                args += " -ac " + channels.Value;
+            }
+
+            var bitrate = state.OutputAudioBitrate;
+
+            if (bitrate.HasValue)
+            {
+                args += " -ab " + bitrate.Value.ToString(CultureInfo.InvariantCulture);
+            }
+
+            if (state.OutputAudioSampleRate.HasValue)
+            {
+                args += " -ar " + state.OutputAudioSampleRate.Value.ToString(CultureInfo.InvariantCulture);
+            }
+
+            args += " " + _encodingHelper.GetAudioFilterParam(state, encodingOptions, true);
+
+            return args;
+        }
+
+        private string GetVideoArguments(StreamState state, EncodingOptions encodingOptions, int startNumber)
+        {
+            if (!state.IsOutputVideo)
+            {
+                return string.Empty;
+            }
+
+            var codec = _encodingHelper.GetVideoEncoder(state, encodingOptions);
+
+            var args = "-codec:v:0 " + codec;
+
+            // if (state.EnableMpegtsM2TsMode)
+            // {
+            //     args += " -mpegts_m2ts_mode 1";
+            // }
+
+            // See if we can save come cpu cycles by avoiding encoding
+            if (EncodingHelper.IsCopyCodec(codec))
+            {
+                if (state.VideoStream != null && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
+                {
+                    string bitStreamArgs = _encodingHelper.GetBitStreamArgs(state.VideoStream);
+                    if (!string.IsNullOrEmpty(bitStreamArgs))
+                    {
+                        args += " " + bitStreamArgs;
+                    }
+                }
+
+                // args += " -flags -global_header";
+            }
+            else
+            {
+                var gopArg = string.Empty;
+                var keyFrameArg = string.Format(
+                    CultureInfo.InvariantCulture,
+                    " -force_key_frames:0 \"expr:gte(t,{0}+n_forced*{1})\"",
+                    startNumber * state.SegmentLength,
+                    state.SegmentLength);
+
+                var framerate = state.VideoStream?.RealFrameRate;
+
+                if (framerate.HasValue)
+                {
+                    // This is to make sure keyframe interval is limited to our segment,
+                    // as forcing keyframes is not enough.
+                    // Example: we encoded half of desired length, then codec detected
+                    // scene cut and inserted a keyframe; next forced keyframe would
+                    // be created outside of segment, which breaks seeking
+                    // -sc_threshold 0 is used to prevent the hardware encoder from post processing to break the set keyframe
+                    gopArg = string.Format(
+                        CultureInfo.InvariantCulture,
+                        " -g {0} -keyint_min {0} -sc_threshold 0",
+                        Math.Ceiling(state.SegmentLength * framerate.Value));
+                }
+
+                args += " " + _encodingHelper.GetVideoQualityParam(state, codec, encodingOptions, "veryfast");
+
+                // Unable to force key frames using these hw encoders, set key frames by GOP
+                if (string.Equals(codec, "h264_qsv", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(codec, "h264_nvenc", StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(codec, "h264_amf", StringComparison.OrdinalIgnoreCase))
+                {
+                    args += " " + gopArg;
+                }
+                else
+                {
+                    args += " " + keyFrameArg + gopArg;
+                }
+
+                // args += " -mixed-refs 0 -refs 3 -x264opts b_pyramid=0:weightb=0:weightp=0";
+
+                var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+
+                // This is for graphical subs
+                if (hasGraphicalSubs)
+                {
+                    args += _encodingHelper.GetGraphicalSubtitleParam(state, encodingOptions, codec);
+                }
+
+                // Add resolution params, if specified
+                else
+                {
+                    args += _encodingHelper.GetOutputSizeParam(state, encodingOptions, codec);
+                }
+
+                // -start_at_zero is necessary to use with -ss when seeking,
+                // otherwise the target position cannot be determined.
+                if (!(state.SubtitleStream != null && state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream))
+                {
+                    args += " -start_at_zero";
+                }
+
+                // args += " -flags -global_header";
+            }
+
+            if (!string.IsNullOrEmpty(state.OutputVideoSync))
+            {
+                args += " -vsync " + state.OutputVideoSync;
+            }
+
+            args += _encodingHelper.GetOutputFFlags(state);
+
+            return args;
+        }
+
+        private string GetSegmentFileExtension(string? segmentContainer)
+        {
+            if (!string.IsNullOrWhiteSpace(segmentContainer))
+            {
+                return "." + segmentContainer;
+            }
+
+            return ".ts";
+        }
+
+        private string GetSegmentPath(StreamState state, string playlist, int index)
+        {
+            var folder = Path.GetDirectoryName(playlist);
+
+            var filename = Path.GetFileNameWithoutExtension(playlist);
+
+            return Path.Combine(folder, filename + index.ToString(CultureInfo.InvariantCulture) + GetSegmentFileExtension(state.Request.SegmentContainer));
+        }
+
+        private async Task<ActionResult> GetSegmentResult(
+            StreamState state,
+            string playlistPath,
+            string segmentPath,
+            string segmentExtension,
+            int segmentIndex,
+            TranscodingJobDto? transcodingJob,
+            CancellationToken cancellationToken)
+        {
+            var segmentExists = System.IO.File.Exists(segmentPath);
+            if (segmentExists)
+            {
+                if (transcodingJob != null && transcodingJob.HasExited)
+                {
+                    // Transcoding job is over, so assume all existing files are ready
+                    _logger.LogDebug("serving up {0} as transcode is over", segmentPath);
+                    return GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob);
+                }
+
+                var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath, segmentExtension);
+
+                // If requested segment is less than transcoding position, we can't transcode backwards, so assume it's ready
+                if (segmentIndex < currentTranscodingIndex)
+                {
+                    _logger.LogDebug("serving up {0} as transcode index {1} is past requested point {2}", segmentPath, currentTranscodingIndex, segmentIndex);
+                    return GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob);
+                }
+            }
+
+            var nextSegmentPath = GetSegmentPath(state, playlistPath, segmentIndex + 1);
+            if (transcodingJob != null)
+            {
+                while (!cancellationToken.IsCancellationRequested && !transcodingJob.HasExited)
+                {
+                    // To be considered ready, the segment file has to exist AND
+                    // either the transcoding job should be done or next segment should also exist
+                    if (segmentExists)
+                    {
+                        if (transcodingJob.HasExited || System.IO.File.Exists(nextSegmentPath))
+                        {
+                            _logger.LogDebug("serving up {0} as it deemed ready", segmentPath);
+                            return GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob);
+                        }
+                    }
+                    else
+                    {
+                        segmentExists = System.IO.File.Exists(segmentPath);
+                        if (segmentExists)
+                        {
+                            continue; // avoid unnecessary waiting if segment just became available
+                        }
+                    }
+
+                    await Task.Delay(100, cancellationToken).ConfigureAwait(false);
+                }
+
+                if (!System.IO.File.Exists(segmentPath))
+                {
+                    _logger.LogWarning("cannot serve {0} as transcoding quit before we got there", segmentPath);
+                }
+                else
+                {
+                    _logger.LogDebug("serving {0} as it's on disk and transcoding stopped", segmentPath);
+                }
+
+                cancellationToken.ThrowIfCancellationRequested();
+            }
+            else
+            {
+                _logger.LogWarning("cannot serve {0} as it doesn't exist and no transcode is running", segmentPath);
+            }
+
+            return GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob);
+        }
+
+        private ActionResult GetSegmentResult(StreamState state, string segmentPath, int index, TranscodingJobDto? transcodingJob)
+        {
+            var segmentEndingPositionTicks = GetEndPositionTicks(state, index);
+
+            Response.OnCompleted(() =>
+            {
+                _logger.LogDebug("finished serving {0}", segmentPath);
+                if (transcodingJob != null)
+                {
+                    transcodingJob.DownloadPositionTicks = Math.Max(transcodingJob.DownloadPositionTicks ?? segmentEndingPositionTicks, segmentEndingPositionTicks);
+                    _transcodingJobHelper.OnTranscodeEndRequest(transcodingJob);
+                }
+
+                return Task.CompletedTask;
+            });
+
+            return FileStreamResponseHelpers.GetStaticFileResult(segmentPath, MimeTypes.GetMimeType(segmentPath)!, false, this);
+        }
+
+        private long GetEndPositionTicks(StreamState state, int requestedIndex)
+        {
+            double startSeconds = 0;
+            var lengths = GetSegmentLengths(state);
+
+            if (requestedIndex >= lengths.Length)
+            {
+                var msg = string.Format(
+                    CultureInfo.InvariantCulture,
+                    "Invalid segment index requested: {0} - Segment count: {1}",
+                    requestedIndex,
+                    lengths.Length);
+                throw new ArgumentException(msg);
+            }
+
+            for (var i = 0; i <= requestedIndex; i++)
+            {
+                startSeconds += lengths[i];
+            }
+
+            return TimeSpan.FromSeconds(startSeconds).Ticks;
+        }
+
+        private int? GetCurrentTranscodingIndex(string playlist, string segmentExtension)
+        {
+            var job = _transcodingJobHelper.GetTranscodingJob(playlist, _transcodingJobType);
+
+            if (job == null || job.HasExited)
+            {
+                return null;
+            }
+
+            var file = GetLastTranscodingFile(playlist, segmentExtension, _fileSystem);
+
+            if (file == null)
+            {
+                return null;
+            }
+
+            var playlistFilename = Path.GetFileNameWithoutExtension(playlist);
+
+            var indexString = Path.GetFileNameWithoutExtension(file.Name).Substring(playlistFilename.Length);
+
+            return int.Parse(indexString, NumberStyles.Integer, CultureInfo.InvariantCulture);
+        }
+
+        private static FileSystemMetadata? GetLastTranscodingFile(string playlist, string segmentExtension, IFileSystem fileSystem)
+        {
+            var folder = Path.GetDirectoryName(playlist);
+
+            var filePrefix = Path.GetFileNameWithoutExtension(playlist) ?? string.Empty;
+
+            try
+            {
+                return fileSystem.GetFiles(folder, new[] { segmentExtension }, true, false)
+                    .Where(i => Path.GetFileNameWithoutExtension(i.Name).StartsWith(filePrefix, StringComparison.OrdinalIgnoreCase))
+                    .OrderByDescending(fileSystem.GetLastWriteTimeUtc)
+                    .FirstOrDefault();
+            }
+            catch (IOException)
+            {
+                return null;
+            }
+        }
+
+        private void DeleteLastFile(string playlistPath, string segmentExtension, int retryCount)
+        {
+            var file = GetLastTranscodingFile(playlistPath, segmentExtension, _fileSystem);
+
+            if (file != null)
+            {
+                DeleteFile(file.FullName, retryCount);
+            }
+        }
+
+        private void DeleteFile(string path, int retryCount)
+        {
+            if (retryCount >= 5)
+            {
+                return;
+            }
+
+            _logger.LogDebug("Deleting partial HLS file {path}", path);
+
+            try
+            {
+                _fileSystem.DeleteFile(path);
+            }
+            catch (IOException ex)
+            {
+                _logger.LogError(ex, "Error deleting partial stream file(s) {path}", path);
+
+                var task = Task.Delay(100);
+                Task.WaitAll(task);
+                DeleteFile(path, retryCount + 1);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error deleting partial stream file(s) {path}", path);
+            }
+        }
+
+        private long GetStartPositionTicks(StreamState state, int requestedIndex)
+        {
+            double startSeconds = 0;
+            var lengths = GetSegmentLengths(state);
+
+            if (requestedIndex >= lengths.Length)
+            {
+                var msg = string.Format(
+                    CultureInfo.InvariantCulture,
+                    "Invalid segment index requested: {0} - Segment count: {1}",
+                    requestedIndex,
+                    lengths.Length);
+                throw new ArgumentException(msg);
+            }
+
+            for (var i = 0; i < requestedIndex; i++)
+            {
+                startSeconds += lengths[i];
+            }
+
+            var position = TimeSpan.FromSeconds(startSeconds).Ticks;
+            return position;
+        }
+    }
+}

+ 125 - 0
Jellyfin.Api/Helpers/HlsCodecStringHelpers.cs

@@ -0,0 +1,125 @@
+using System;
+using System.Globalization;
+using System.Text;
+
+namespace Jellyfin.Api.Helpers
+{
+    /// <summary>
+    /// Hls Codec string helpers.
+    /// </summary>
+    public static class HlsCodecStringHelpers
+    {
+        /// <summary>
+        /// Gets a MP3 codec string.
+        /// </summary>
+        /// <returns>MP3 codec string.</returns>
+        public static string GetMP3String()
+        {
+            return "mp4a.40.34";
+        }
+
+        /// <summary>
+        /// Gets an AAC codec string.
+        /// </summary>
+        /// <param name="profile">AAC profile.</param>
+        /// <returns>AAC codec string.</returns>
+        public static string GetAACString(string profile)
+        {
+            StringBuilder result = new StringBuilder("mp4a", 9);
+
+            if (string.Equals(profile, "HE", StringComparison.OrdinalIgnoreCase))
+            {
+                result.Append(".40.5");
+            }
+            else
+            {
+                // Default to LC if profile is invalid
+                result.Append(".40.2");
+            }
+
+            return result.ToString();
+        }
+
+        /// <summary>
+        /// Gets a H.264 codec string.
+        /// </summary>
+        /// <param name="profile">H.264 profile.</param>
+        /// <param name="level">H.264 level.</param>
+        /// <returns>H.264 string.</returns>
+        public static string GetH264String(string profile, int level)
+        {
+            StringBuilder result = new StringBuilder("avc1", 11);
+
+            if (string.Equals(profile, "high", StringComparison.OrdinalIgnoreCase))
+            {
+                result.Append(".6400");
+            }
+            else if (string.Equals(profile, "main", StringComparison.OrdinalIgnoreCase))
+            {
+                result.Append(".4D40");
+            }
+            else if (string.Equals(profile, "baseline", StringComparison.OrdinalIgnoreCase))
+            {
+                result.Append(".42E0");
+            }
+            else
+            {
+                // Default to constrained baseline if profile is invalid
+                result.Append(".4240");
+            }
+
+            string levelHex = level.ToString("X2", CultureInfo.InvariantCulture);
+            result.Append(levelHex);
+
+            return result.ToString();
+        }
+
+        /// <summary>
+        /// Gets a H.265 codec string.
+        /// </summary>
+        /// <param name="profile">H.265 profile.</param>
+        /// <param name="level">H.265 level.</param>
+        /// <returns>H.265 string.</returns>
+        public static string GetH265String(string profile, int level)
+        {
+            // The h265 syntax is a bit of a mystery at the time this comment was written.
+            // This is what I've found through various sources:
+            // FORMAT: [codecTag].[profile].[constraint?].L[level * 30].[UNKNOWN]
+            StringBuilder result = new StringBuilder("hev1", 16);
+
+            if (string.Equals(profile, "main10", StringComparison.OrdinalIgnoreCase))
+            {
+                result.Append(".2.6");
+            }
+            else
+            {
+                // Default to main if profile is invalid
+                result.Append(".1.6");
+            }
+
+            result.Append(".L")
+                .Append(level * 3)
+                .Append(".B0");
+
+            return result.ToString();
+        }
+
+        /// <summary>
+        /// Gets an AC-3 codec string.
+        /// </summary>
+        /// <returns>AC-3 codec string.</returns>
+        public static string GetAC3String()
+        {
+            return "mp4a.a5";
+        }
+
+        /// <summary>
+        /// Gets an E-AC-3 codec string.
+        /// </summary>
+        /// <returns>E-AC-3 codec string.</returns>
+        public static string GetEAC3String()
+        {
+            return "mp4a.a6";
+        }
+    }
+}

+ 6 - 0
Jellyfin.Api/Helpers/RequestHelpers.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net;
 using Jellyfin.Data.Enums;
 using MediaBrowser.Controller.Net;
 using MediaBrowser.Controller.Session;
@@ -172,5 +173,10 @@ namespace Jellyfin.Api.Helpers
                 .Select(i => i!.Value)
                 .ToArray();
         }
+
+        internal static IPAddress NormalizeIp(IPAddress ip)
+        {
+            return ip.IsIPv4MappedToIPv6 ? ip.MapToIPv4() : ip;
+        }
     }
 }

+ 3 - 3
Jellyfin.Api/Helpers/TranscodingJobHelper.cs

@@ -219,7 +219,7 @@ namespace Jellyfin.Api.Helpers
         /// <param name="playSessionId">The play session identifier.</param>
         /// <param name="deleteFiles">The delete files.</param>
         /// <returns>Task.</returns>
-        public Task KillTranscodingJobs(string deviceId, string playSessionId, Func<string, bool> deleteFiles)
+        public Task KillTranscodingJobs(string deviceId, string? playSessionId, Func<string, bool> deleteFiles)
         {
             return KillTranscodingJobs(
                 j => string.IsNullOrWhiteSpace(playSessionId)
@@ -503,9 +503,9 @@ namespace Jellyfin.Api.Helpers
                 }
             }
 
-            var process = new Process()
+            var process = new Process
             {
-                StartInfo = new ProcessStartInfo()
+                StartInfo = new ProcessStartInfo
                 {
                     WindowStyle = ProcessWindowStyle.Hidden,
                     CreateNoWindow = true,

+ 13 - 0
Jellyfin.Api/Models/StreamingDtos/HlsAudioRequestDto.cs

@@ -0,0 +1,13 @@
+namespace Jellyfin.Api.Models.StreamingDtos
+{
+    /// <summary>
+    /// The hls video request dto.
+    /// </summary>
+    public class HlsAudioRequestDto : StreamingRequestDto
+    {
+        /// <summary>
+        /// Gets or sets a value indicating whether enable adaptive bitrate streaming.
+        /// </summary>
+        public bool EnableAdaptiveBitrateStreaming { get; set; }
+    }
+}

+ 13 - 0
Jellyfin.Api/Models/StreamingDtos/HlsVideoRequestDto.cs

@@ -0,0 +1,13 @@
+namespace Jellyfin.Api.Models.StreamingDtos
+{
+    /// <summary>
+    /// The hls video request dto.
+    /// </summary>
+    public class HlsVideoRequestDto : VideoRequestDto
+    {
+        /// <summary>
+        /// Gets or sets a value indicating whether enable adaptive bitrate streaming.
+        /// </summary>
+        public bool EnableAdaptiveBitrateStreaming { get; set; }
+    }
+}

+ 0 - 8
MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs

@@ -27,8 +27,6 @@ namespace MediaBrowser.Api.Playback.Hls
     /// <summary>
     /// Options is needed for chromecast. Threw Head in there since it's related
     /// </summary>
-    [Route("/Videos/{Id}/master.m3u8", "GET", Summary = "Gets a video stream using HTTP live streaming.")]
-    [Route("/Videos/{Id}/master.m3u8", "HEAD", Summary = "Gets a video stream using HTTP live streaming.")]
     public class GetMasterHlsVideoPlaylist : VideoStreamRequest, IMasterHlsRequest
     {
         public bool EnableAdaptiveBitrateStreaming { get; set; }
@@ -39,8 +37,6 @@ namespace MediaBrowser.Api.Playback.Hls
         }
     }
 
-    [Route("/Audio/{Id}/master.m3u8", "GET", Summary = "Gets an audio stream using HTTP live streaming.")]
-    [Route("/Audio/{Id}/master.m3u8", "HEAD", Summary = "Gets an audio stream using HTTP live streaming.")]
     public class GetMasterHlsAudioPlaylist : StreamRequest, IMasterHlsRequest
     {
         public bool EnableAdaptiveBitrateStreaming { get; set; }
@@ -56,17 +52,14 @@ namespace MediaBrowser.Api.Playback.Hls
         bool EnableAdaptiveBitrateStreaming { get; set; }
     }
 
-    [Route("/Videos/{Id}/main.m3u8", "GET", Summary = "Gets a video stream using HTTP live streaming.")]
     public class GetVariantHlsVideoPlaylist : VideoStreamRequest
     {
     }
 
-    [Route("/Audio/{Id}/main.m3u8", "GET", Summary = "Gets an audio stream using HTTP live streaming.")]
     public class GetVariantHlsAudioPlaylist : StreamRequest
     {
     }
 
-    [Route("/Videos/{Id}/hls1/{PlaylistId}/{SegmentId}.{SegmentContainer}", "GET")]
     public class GetHlsVideoSegment : VideoStreamRequest
     {
         public string PlaylistId { get; set; }
@@ -78,7 +71,6 @@ namespace MediaBrowser.Api.Playback.Hls
         public string SegmentId { get; set; }
     }
 
-    [Route("/Audio/{Id}/hls1/{PlaylistId}/{SegmentId}.{SegmentContainer}", "GET")]
     public class GetHlsAudioSegment : StreamRequest
     {
         public string PlaylistId { get; set; }