mirror of
https://github.com/jellyfin/jellyfin.git
synced 2024-11-15 18:08:53 -07:00
600 lines
29 KiB
C#
600 lines
29 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel.DataAnnotations;
|
|
using System.Globalization;
|
|
using System.IO;
|
|
using System.Runtime.InteropServices;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
using Jellyfin.Api.Attributes;
|
|
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.Extensions;
|
|
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.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;
|
|
|
|
namespace Jellyfin.Api.Controllers
|
|
{
|
|
/// <summary>
|
|
/// The video hls controller.
|
|
/// </summary>
|
|
[Route("")]
|
|
[Authorize(Policy = Policies.DefaultAuthorization)]
|
|
public class VideoHlsController : BaseJellyfinApiController
|
|
{
|
|
private const string DefaultEncoderPreset = "superfast";
|
|
private const TranscodingJobType TranscodingJobType = MediaBrowser.Controller.MediaEncoding.TranscodingJobType.Hls;
|
|
|
|
private readonly EncodingHelper _encodingHelper;
|
|
private readonly IDlnaManager _dlnaManager;
|
|
private readonly IAuthorizationContext _authContext;
|
|
private readonly IUserManager _userManager;
|
|
private readonly ILibraryManager _libraryManager;
|
|
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 ILogger<VideoHlsController> _logger;
|
|
private readonly EncodingOptions _encodingOptions;
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="VideoHlsController"/> class.
|
|
/// </summary>
|
|
/// <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="dlnaManager">Instance of the <see cref="IDlnaManager"/> interface.</param>
|
|
/// <param name="userManger">Instance of the <see cref="IUserManager"/> interface.</param>
|
|
/// <param name="authorizationContext">Instance of the <see cref="IAuthorizationContext"/> interface.</param>
|
|
/// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> 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="deviceManager">Instance of the <see cref="IDeviceManager"/> interface.</param>
|
|
/// <param name="transcodingJobHelper">The <see cref="TranscodingJobHelper"/> singleton.</param>
|
|
/// <param name="logger">Instance of the <see cref="ILogger{VideoHlsController}"/>.</param>
|
|
public VideoHlsController(
|
|
IMediaEncoder mediaEncoder,
|
|
IFileSystem fileSystem,
|
|
ISubtitleEncoder subtitleEncoder,
|
|
IConfiguration configuration,
|
|
IDlnaManager dlnaManager,
|
|
IUserManager userManger,
|
|
IAuthorizationContext authorizationContext,
|
|
ILibraryManager libraryManager,
|
|
IMediaSourceManager mediaSourceManager,
|
|
IServerConfigurationManager serverConfigurationManager,
|
|
IDeviceManager deviceManager,
|
|
TranscodingJobHelper transcodingJobHelper,
|
|
ILogger<VideoHlsController> logger)
|
|
{
|
|
_encodingHelper = new EncodingHelper(mediaEncoder, fileSystem, subtitleEncoder, configuration);
|
|
|
|
_dlnaManager = dlnaManager;
|
|
_authContext = authorizationContext;
|
|
_userManager = userManger;
|
|
_libraryManager = libraryManager;
|
|
_mediaSourceManager = mediaSourceManager;
|
|
_serverConfigurationManager = serverConfigurationManager;
|
|
_mediaEncoder = mediaEncoder;
|
|
_fileSystem = fileSystem;
|
|
_subtitleEncoder = subtitleEncoder;
|
|
_configuration = configuration;
|
|
_deviceManager = deviceManager;
|
|
_transcodingJobHelper = transcodingJobHelper;
|
|
_logger = logger;
|
|
_encodingOptions = serverConfigurationManager.GetEncodingOptions();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets a hls live stream.
|
|
/// </summary>
|
|
/// <param name="itemId">The item id.</param>
|
|
/// <param name="container">The audio container.</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 anamorphic 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="transcodeReasons">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="maxWidth">Optional. The max width.</param>
|
|
/// <param name="maxHeight">Optional. The max height.</param>
|
|
/// <param name="enableSubtitlesInManifest">Optional. Whether to enable subtitles in the manifest.</param>
|
|
/// <response code="200">Hls live stream retrieved.</response>
|
|
/// <returns>A <see cref="FileResult"/> containing the hls file.</returns>
|
|
[HttpGet("Videos/{itemId}/live.m3u8")]
|
|
[ProducesResponseType(StatusCodes.Status200OK)]
|
|
[ProducesPlaylistFile]
|
|
public async Task<ActionResult> GetLiveHlsStream(
|
|
[FromRoute, Required] Guid itemId,
|
|
[FromQuery] 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? transcodeReasons,
|
|
[FromQuery] int? audioStreamIndex,
|
|
[FromQuery] int? videoStreamIndex,
|
|
[FromQuery] EncodingContext context,
|
|
[FromQuery] Dictionary<string, string> streamOptions,
|
|
[FromQuery] int? maxWidth,
|
|
[FromQuery] int? maxHeight,
|
|
[FromQuery] bool? enableSubtitlesInManifest)
|
|
{
|
|
VideoRequestDto 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 = transcodeReasons,
|
|
AudioStreamIndex = audioStreamIndex,
|
|
VideoStreamIndex = videoStreamIndex,
|
|
Context = context,
|
|
StreamOptions = streamOptions,
|
|
MaxHeight = maxHeight,
|
|
MaxWidth = maxWidth,
|
|
EnableSubtitlesInManifest = enableSubtitlesInManifest ?? true
|
|
};
|
|
|
|
var cancellationTokenSource = new 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);
|
|
|
|
TranscodingJobDto? job = null;
|
|
var playlistPath = Path.ChangeExtension(state.OutputFilePath, ".m3u8");
|
|
|
|
if (!System.IO.File.Exists(playlistPath))
|
|
{
|
|
var transcodingLock = _transcodingJobHelper.GetTranscodingLock(playlistPath);
|
|
await transcodingLock.WaitAsync(cancellationTokenSource.Token).ConfigureAwait(false);
|
|
try
|
|
{
|
|
if (!System.IO.File.Exists(playlistPath))
|
|
{
|
|
// If the playlist doesn't already exist, startup ffmpeg
|
|
try
|
|
{
|
|
job = await _transcodingJobHelper.StartFfMpeg(
|
|
state,
|
|
playlistPath,
|
|
GetCommandLineArguments(playlistPath, state),
|
|
Request,
|
|
TranscodingJobType,
|
|
cancellationTokenSource)
|
|
.ConfigureAwait(false);
|
|
job.IsLiveOutput = true;
|
|
}
|
|
catch
|
|
{
|
|
state.Dispose();
|
|
throw;
|
|
}
|
|
|
|
minSegments = state.MinSegments;
|
|
if (minSegments > 0)
|
|
{
|
|
await HlsHelpers.WaitForMinimumSegmentCount(playlistPath, minSegments, _logger, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
transcodingLock.Release();
|
|
}
|
|
}
|
|
|
|
job ??= _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, TranscodingJobType);
|
|
|
|
if (job != null)
|
|
{
|
|
_transcodingJobHelper.OnTranscodeEndRequest(job);
|
|
}
|
|
|
|
var playlistText = HlsHelpers.GetLivePlaylistText(playlistPath, state);
|
|
|
|
return Content(playlistText, MimeTypes.GetMimeType("playlist.m3u8"));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the command line arguments for ffmpeg.
|
|
/// </summary>
|
|
/// <param name="outputPath">The output path of the file.</param>
|
|
/// <param name="state">The <see cref="StreamState"/>.</param>
|
|
/// <returns>The command line arguments as a string.</returns>
|
|
private string GetCommandLineArguments(string outputPath, StreamState state)
|
|
{
|
|
var videoCodec = _encodingHelper.GetVideoEncoder(state, _encodingOptions);
|
|
var threads = EncodingHelper.GetNumberOfThreads(state, _encodingOptions, videoCodec); // GetNumberOfThreads is static.
|
|
var inputModifier = _encodingHelper.GetInputModifier(state, _encodingOptions);
|
|
var mapArgs = state.IsOutputVideo ? _encodingHelper.GetMapArgs(state) : string.Empty;
|
|
|
|
var directory = Path.GetDirectoryName(outputPath) ?? throw new ArgumentException($"Provided path ({outputPath}) is not valid.", nameof(outputPath));
|
|
var outputFileNameWithoutExtension = Path.GetFileNameWithoutExtension(outputPath);
|
|
var outputPrefix = Path.Combine(directory, outputFileNameWithoutExtension);
|
|
var outputExtension = EncodingHelper.GetSegmentFileExtension(state.Request.SegmentContainer);
|
|
var outputTsArg = outputPrefix + "%d" + outputExtension;
|
|
|
|
var segmentFormat = outputExtension.TrimStart('.');
|
|
if (string.Equals(segmentFormat, "ts", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
segmentFormat = "mpegts";
|
|
}
|
|
else if (string.Equals(segmentFormat, "mp4", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
var outputFmp4HeaderArg = string.Empty;
|
|
var isWindows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
|
|
if (isWindows)
|
|
{
|
|
// on Windows, the path of fmp4 header file needs to be configured
|
|
outputFmp4HeaderArg = " -hls_fmp4_init_filename \"" + outputPrefix + "-1" + outputExtension + "\"";
|
|
}
|
|
else
|
|
{
|
|
// on Linux/Unix, ffmpeg generate fmp4 header file to m3u8 output folder
|
|
outputFmp4HeaderArg = " -hls_fmp4_init_filename \"" + outputFileNameWithoutExtension + "-1" + outputExtension + "\"";
|
|
}
|
|
|
|
segmentFormat = "fmp4" + outputFmp4HeaderArg;
|
|
}
|
|
else
|
|
{
|
|
_logger.LogError("Invalid HLS segment container: {SegmentFormat}", segmentFormat);
|
|
}
|
|
|
|
var maxMuxingQueueSize = _encodingOptions.MaxMuxingQueueSize > 128
|
|
? _encodingOptions.MaxMuxingQueueSize.ToString(CultureInfo.InvariantCulture)
|
|
: "128";
|
|
|
|
var baseUrlParam = string.Format(
|
|
CultureInfo.InvariantCulture,
|
|
"\"hls/{0}/\"",
|
|
Path.GetFileNameWithoutExtension(outputPath));
|
|
|
|
return string.Format(
|
|
CultureInfo.InvariantCulture,
|
|
"{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -copyts -avoid_negative_ts disabled -max_muxing_queue_size {6} -f hls -max_delay 5000000 -hls_time {7} -hls_segment_type {8} -start_number 0 -hls_base_url {9} -hls_playlist_type event -hls_segment_filename \"{10}\" -y \"{11}\"",
|
|
inputModifier,
|
|
_encodingHelper.GetInputArgument(state, _encodingOptions),
|
|
threads,
|
|
mapArgs,
|
|
GetVideoArguments(state),
|
|
GetAudioArguments(state),
|
|
maxMuxingQueueSize,
|
|
state.SegmentLength.ToString(CultureInfo.InvariantCulture),
|
|
segmentFormat,
|
|
baseUrlParam,
|
|
outputTsArg,
|
|
outputPath).Trim();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the audio arguments for transcoding.
|
|
/// </summary>
|
|
/// <param name="state">The <see cref="StreamState"/>.</param>
|
|
/// <returns>The command line arguments for audio transcoding.</returns>
|
|
private string GetAudioArguments(StreamState state)
|
|
{
|
|
if (state.AudioStream == null)
|
|
{
|
|
return string.Empty;
|
|
}
|
|
|
|
var audioCodec = _encodingHelper.GetAudioEncoder(state);
|
|
|
|
if (!state.IsOutputVideo)
|
|
{
|
|
if (EncodingHelper.IsCopyCodec(audioCodec))
|
|
{
|
|
var bitStreamArgs = EncodingHelper.GetAudioBitStreamArguments(state, state.Request.SegmentContainer, state.MediaSource.Container);
|
|
|
|
return "-acodec copy -strict -2" + bitStreamArgs;
|
|
}
|
|
|
|
var audioTranscodeParams = string.Empty;
|
|
|
|
audioTranscodeParams += "-acodec " + audioCodec;
|
|
|
|
if (state.OutputAudioBitrate.HasValue)
|
|
{
|
|
audioTranscodeParams += " -ab " + state.OutputAudioBitrate.Value.ToString(CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
if (state.OutputAudioChannels.HasValue)
|
|
{
|
|
audioTranscodeParams += " -ac " + state.OutputAudioChannels.Value.ToString(CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
if (state.OutputAudioSampleRate.HasValue)
|
|
{
|
|
audioTranscodeParams += " -ar " + state.OutputAudioSampleRate.Value.ToString(CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
audioTranscodeParams += " -vn";
|
|
return audioTranscodeParams;
|
|
}
|
|
|
|
if (EncodingHelper.IsCopyCodec(audioCodec))
|
|
{
|
|
var bitStreamArgs = EncodingHelper.GetAudioBitStreamArguments(state, state.Request.SegmentContainer, state.MediaSource.Container);
|
|
|
|
return "-acodec copy -strict -2" + bitStreamArgs;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the video arguments for transcoding.
|
|
/// </summary>
|
|
/// <param name="state">The <see cref="StreamState"/>.</param>
|
|
/// <returns>The command line arguments for video transcoding.</returns>
|
|
private string GetVideoArguments(StreamState state)
|
|
{
|
|
if (state.VideoStream == null)
|
|
{
|
|
return string.Empty;
|
|
}
|
|
|
|
if (!state.IsOutputVideo)
|
|
{
|
|
return string.Empty;
|
|
}
|
|
|
|
var codec = _encodingHelper.GetVideoEncoder(state, _encodingOptions);
|
|
|
|
var args = "-codec:v:0 " + codec;
|
|
|
|
// Prefer hvc1 to hev1.
|
|
if (string.Equals(state.ActualOutputVideoCodec, "h265", StringComparison.OrdinalIgnoreCase)
|
|
|| string.Equals(state.ActualOutputVideoCodec, "hevc", StringComparison.OrdinalIgnoreCase)
|
|
|| string.Equals(codec, "h265", StringComparison.OrdinalIgnoreCase)
|
|
|| string.Equals(codec, "hevc", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
args += " -tag:v:0 hvc1";
|
|
}
|
|
|
|
// if (state.EnableMpegtsM2TsMode)
|
|
// {
|
|
// args += " -mpegts_m2ts_mode 1";
|
|
// }
|
|
|
|
// See if we can save come cpu cycles by avoiding encoding.
|
|
if (EncodingHelper.IsCopyCodec(codec))
|
|
{
|
|
// If h264_mp4toannexb is ever added, do not use it for live tv.
|
|
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 += " -start_at_zero";
|
|
}
|
|
else
|
|
{
|
|
args += _encodingHelper.GetVideoQualityParam(state, codec, _encodingOptions, DefaultEncoderPreset);
|
|
|
|
// Set the key frame params for video encoding to match the hls segment time.
|
|
args += _encodingHelper.GetHlsVideoKeyFrameArguments(state, codec, state.SegmentLength, true, null);
|
|
|
|
// Currenly b-frames in libx265 breaks the FMP4-HLS playback on iOS, disable it for now.
|
|
if (string.Equals(codec, "libx265", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
args += " -bf 0";
|
|
}
|
|
|
|
var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
|
|
|
|
if (hasGraphicalSubs)
|
|
{
|
|
// Graphical subs overlay and resolution params.
|
|
args += _encodingHelper.GetGraphicalSubtitleParam(state, _encodingOptions, codec);
|
|
}
|
|
else
|
|
{
|
|
// Resolution params.
|
|
args += _encodingHelper.GetOutputSizeParam(state, _encodingOptions, codec);
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|