You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
707 lines
25 KiB
707 lines
25 KiB
using MediaBrowser.Common.Extensions;
|
|
using MediaBrowser.Common.IO;
|
|
using MediaBrowser.Common.Net;
|
|
using MediaBrowser.Controller.Channels;
|
|
using MediaBrowser.Controller.Configuration;
|
|
using MediaBrowser.Controller.Dlna;
|
|
using MediaBrowser.Controller.Library;
|
|
using MediaBrowser.Controller.LiveTv;
|
|
using MediaBrowser.Controller.MediaEncoding;
|
|
using MediaBrowser.Controller.Net;
|
|
using MediaBrowser.Model.Dlna;
|
|
using MediaBrowser.Model.Entities;
|
|
using MediaBrowser.Model.IO;
|
|
using ServiceStack;
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Globalization;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
|
|
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 GetMasterHlsVideoStream : VideoStreamRequest
|
|
{
|
|
public bool EnableAdaptiveBitrateStreaming { get; set; }
|
|
|
|
public GetMasterHlsVideoStream()
|
|
{
|
|
EnableAdaptiveBitrateStreaming = true;
|
|
}
|
|
}
|
|
|
|
[Route("/Videos/{Id}/main.m3u8", "GET", Summary = "Gets a video stream using HTTP live streaming.")]
|
|
public class GetMainHlsVideoStream : VideoStreamRequest
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Class GetHlsVideoSegment
|
|
/// </summary>
|
|
[Route("/Videos/{Id}/hlsdynamic/{PlaylistId}/{SegmentId}.ts", "GET")]
|
|
[Api(Description = "Gets an Http live streaming segment file. Internal use only.")]
|
|
public class GetDynamicHlsVideoSegment : VideoStreamRequest
|
|
{
|
|
public string PlaylistId { get; set; }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the segment id.
|
|
/// </summary>
|
|
/// <value>The segment id.</value>
|
|
public string SegmentId { get; set; }
|
|
}
|
|
|
|
public class DynamicHlsService : BaseHlsService
|
|
{
|
|
protected INetworkManager NetworkManager { get; private set; }
|
|
|
|
public DynamicHlsService(IServerConfigurationManager serverConfig, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IFileSystem fileSystem, ILiveTvManager liveTvManager, IDlnaManager dlnaManager, IChannelManager channelManager, ISubtitleEncoder subtitleEncoder, INetworkManager networkManager)
|
|
: base(serverConfig, userManager, libraryManager, isoManager, mediaEncoder, fileSystem, liveTvManager, dlnaManager, channelManager, subtitleEncoder)
|
|
{
|
|
NetworkManager = networkManager;
|
|
}
|
|
|
|
public object Get(GetMasterHlsVideoStream request)
|
|
{
|
|
var result = GetAsync(request, "GET").Result;
|
|
|
|
return result;
|
|
}
|
|
|
|
public object Head(GetMasterHlsVideoStream request)
|
|
{
|
|
var result = GetAsync(request, "HEAD").Result;
|
|
|
|
return result;
|
|
}
|
|
|
|
public object Get(GetMainHlsVideoStream request)
|
|
{
|
|
var result = GetPlaylistAsync(request, "main").Result;
|
|
|
|
return result;
|
|
}
|
|
|
|
public object Get(GetDynamicHlsVideoSegment request)
|
|
{
|
|
return GetDynamicSegment(request, request.SegmentId).Result;
|
|
}
|
|
|
|
private async Task<object> GetDynamicSegment(VideoStreamRequest request, string segmentId)
|
|
{
|
|
if ((request.StartTimeTicks ?? 0) > 0)
|
|
{
|
|
throw new ArgumentException("StartTimeTicks is not allowed.");
|
|
}
|
|
|
|
var cancellationTokenSource = new CancellationTokenSource();
|
|
var cancellationToken = cancellationTokenSource.Token;
|
|
|
|
var index = int.Parse(segmentId, NumberStyles.Integer, UsCulture);
|
|
|
|
var state = await GetState(request, cancellationToken).ConfigureAwait(false);
|
|
|
|
var playlistPath = Path.ChangeExtension(state.OutputFilePath, ".m3u8");
|
|
|
|
var segmentPath = GetSegmentPath(playlistPath, index);
|
|
var segmentLength = state.SegmentLength;
|
|
|
|
var segmentExtension = GetSegmentFileExtension(state);
|
|
|
|
TranscodingJob job = null;
|
|
|
|
if (File.Exists(segmentPath))
|
|
{
|
|
return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
await ApiEntryPoint.Instance.TranscodingStartLock.WaitAsync(cancellationTokenSource.Token).ConfigureAwait(false);
|
|
try
|
|
{
|
|
if (File.Exists(segmentPath))
|
|
{
|
|
return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
else
|
|
{
|
|
var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath, segmentExtension);
|
|
|
|
if (currentTranscodingIndex == null || index < currentTranscodingIndex.Value || (index - currentTranscodingIndex.Value) > 4)
|
|
{
|
|
// If the playlist doesn't already exist, startup ffmpeg
|
|
try
|
|
{
|
|
ApiEntryPoint.Instance.KillTranscodingJobs(j => j.Type == TranscodingJobType && string.Equals(j.DeviceId, request.DeviceId, StringComparison.OrdinalIgnoreCase), p => !string.Equals(p, playlistPath, StringComparison.OrdinalIgnoreCase));
|
|
|
|
if (currentTranscodingIndex.HasValue)
|
|
{
|
|
DeleteLastFile(playlistPath, segmentExtension, 0);
|
|
}
|
|
|
|
var startSeconds = index * state.SegmentLength;
|
|
request.StartTimeTicks = TimeSpan.FromSeconds(startSeconds).Ticks;
|
|
|
|
job = await StartFfMpeg(state, playlistPath, cancellationTokenSource).ConfigureAwait(false);
|
|
}
|
|
catch
|
|
{
|
|
state.Dispose();
|
|
throw;
|
|
}
|
|
|
|
await WaitForMinimumSegmentCount(playlistPath, 2, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
ApiEntryPoint.Instance.TranscodingStartLock.Release();
|
|
}
|
|
|
|
Logger.Info("waiting for {0}", segmentPath);
|
|
while (!File.Exists(segmentPath))
|
|
{
|
|
await Task.Delay(50, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
Logger.Info("returning {0}", segmentPath);
|
|
job = job ?? ApiEntryPoint.Instance.GetTranscodingJob(playlistPath, TranscodingJobType);
|
|
return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
public int? GetCurrentTranscodingIndex(string playlist, string segmentExtension)
|
|
{
|
|
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, UsCulture);
|
|
}
|
|
|
|
private void DeleteLastFile(string playlistPath, string segmentExtension, int retryCount)
|
|
{
|
|
var file = GetLastTranscodingFile(playlistPath, segmentExtension, FileSystem);
|
|
|
|
if (file != null)
|
|
{
|
|
DeleteFile(file, retryCount);
|
|
}
|
|
}
|
|
|
|
private void DeleteFile(FileInfo file, int retryCount)
|
|
{
|
|
if (retryCount >= 5)
|
|
{
|
|
return;
|
|
}
|
|
|
|
try
|
|
{
|
|
File.Delete(file.FullName);
|
|
}
|
|
catch (IOException ex)
|
|
{
|
|
Logger.ErrorException("Error deleting partial stream file(s) {0}", ex, file.FullName);
|
|
|
|
Thread.Sleep(100);
|
|
DeleteFile(file, retryCount + 1);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
Logger.ErrorException("Error deleting partial stream file(s) {0}", ex, file.FullName);
|
|
}
|
|
}
|
|
|
|
private static FileInfo GetLastTranscodingFile(string playlist, string segmentExtension, IFileSystem fileSystem)
|
|
{
|
|
var folder = Path.GetDirectoryName(playlist);
|
|
|
|
var filePrefix = Path.GetFileNameWithoutExtension(playlist) ?? string.Empty;
|
|
|
|
try
|
|
{
|
|
return new DirectoryInfo(folder)
|
|
.EnumerateFiles("*", SearchOption.TopDirectoryOnly)
|
|
.Where(i => string.Equals(i.Extension, segmentExtension, StringComparison.OrdinalIgnoreCase) && Path.GetFileNameWithoutExtension(i.Name).StartsWith(filePrefix, StringComparison.OrdinalIgnoreCase))
|
|
.OrderByDescending(fileSystem.GetLastWriteTimeUtc)
|
|
.FirstOrDefault();
|
|
}
|
|
catch (DirectoryNotFoundException)
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
|
|
protected override int GetStartNumber(StreamState state)
|
|
{
|
|
return GetStartNumber(state.VideoRequest);
|
|
}
|
|
|
|
private int GetStartNumber(VideoStreamRequest request)
|
|
{
|
|
var segmentId = "0";
|
|
|
|
var segmentRequest = request as GetDynamicHlsVideoSegment;
|
|
if (segmentRequest != null)
|
|
{
|
|
segmentId = segmentRequest.SegmentId;
|
|
}
|
|
|
|
return int.Parse(segmentId, NumberStyles.Integer, UsCulture);
|
|
}
|
|
|
|
private string GetSegmentPath(string playlist, int index)
|
|
{
|
|
var folder = Path.GetDirectoryName(playlist);
|
|
|
|
var filename = Path.GetFileNameWithoutExtension(playlist);
|
|
|
|
return Path.Combine(folder, filename + index.ToString(UsCulture) + ".ts");
|
|
}
|
|
|
|
private async Task<object> GetSegmentResult(string playlistPath,
|
|
string segmentPath,
|
|
int segmentIndex,
|
|
int segmentLength,
|
|
TranscodingJob transcodingJob,
|
|
CancellationToken cancellationToken)
|
|
{
|
|
// If all transcoding has completed, just return immediately
|
|
if (!IsTranscoding(playlistPath))
|
|
{
|
|
return GetSegmentResult(segmentPath, segmentIndex, segmentLength, transcodingJob);
|
|
}
|
|
|
|
var segmentFilename = Path.GetFileName(segmentPath);
|
|
|
|
using (var fileStream = FileSystem.GetFileStream(playlistPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, true))
|
|
{
|
|
using (var reader = new StreamReader(fileStream))
|
|
{
|
|
var text = await reader.ReadToEndAsync().ConfigureAwait(false);
|
|
|
|
// If it appears in the playlist, it's done
|
|
if (text.IndexOf(segmentFilename, StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
return GetSegmentResult(segmentPath, segmentIndex, segmentLength, transcodingJob);
|
|
}
|
|
}
|
|
}
|
|
|
|
// if a different file is encoding, it's done
|
|
//var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath);
|
|
//if (currentTranscodingIndex > segmentIndex)
|
|
//{
|
|
//return GetSegmentResult(segmentPath, segmentIndex);
|
|
//}
|
|
|
|
// Wait for the file to stop being written to, then stream it
|
|
var length = new FileInfo(segmentPath).Length;
|
|
var eofCount = 0;
|
|
|
|
while (eofCount < 10)
|
|
{
|
|
var info = new FileInfo(segmentPath);
|
|
|
|
if (!info.Exists)
|
|
{
|
|
break;
|
|
}
|
|
|
|
var newLength = info.Length;
|
|
|
|
if (newLength == length)
|
|
{
|
|
eofCount++;
|
|
}
|
|
else
|
|
{
|
|
eofCount = 0;
|
|
}
|
|
|
|
length = newLength;
|
|
await Task.Delay(100, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
return GetSegmentResult(segmentPath, segmentIndex, segmentLength, transcodingJob);
|
|
}
|
|
|
|
private object GetSegmentResult(string segmentPath, int index, int segmentLength, TranscodingJob transcodingJob)
|
|
{
|
|
var segmentEndingSeconds = (1 + index) * segmentLength;
|
|
var segmentEndingPositionTicks = TimeSpan.FromSeconds(segmentEndingSeconds).Ticks;
|
|
|
|
return ResultFactory.GetStaticFileResult(Request, new StaticFileResultOptions
|
|
{
|
|
Path = segmentPath,
|
|
FileShare = FileShare.ReadWrite,
|
|
OnComplete = () =>
|
|
{
|
|
if (transcodingJob != null)
|
|
{
|
|
transcodingJob.DownloadPositionTicks = Math.Max(transcodingJob.DownloadPositionTicks ?? segmentEndingPositionTicks, segmentEndingPositionTicks);
|
|
}
|
|
|
|
}
|
|
});
|
|
}
|
|
|
|
private bool IsTranscoding(string playlistPath)
|
|
{
|
|
var job = ApiEntryPoint.Instance.GetTranscodingJob(playlistPath, TranscodingJobType);
|
|
|
|
return job != null && !job.HasExited;
|
|
}
|
|
|
|
private async Task<object> GetAsync(GetMasterHlsVideoStream request, string method)
|
|
{
|
|
var state = await GetState(request, CancellationToken.None).ConfigureAwait(false);
|
|
|
|
if (string.IsNullOrEmpty(request.MediaSourceId))
|
|
{
|
|
throw new ArgumentException("MediaSourceId is required");
|
|
}
|
|
|
|
var playlistText = string.Empty;
|
|
|
|
if (string.Equals(method, "GET", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
var audioBitrate = state.OutputAudioBitrate ?? 0;
|
|
var videoBitrate = state.OutputVideoBitrate ?? 0;
|
|
|
|
playlistText = GetMasterPlaylistFileText(state, videoBitrate + audioBitrate);
|
|
}
|
|
|
|
return ResultFactory.GetResult(playlistText, Common.Net.MimeTypes.GetMimeType("playlist.m3u8"), new Dictionary<string, string>());
|
|
}
|
|
|
|
private string GetMasterPlaylistFileText(StreamState state, int totalBitrate)
|
|
{
|
|
var builder = new StringBuilder();
|
|
|
|
builder.AppendLine("#EXTM3U");
|
|
|
|
var queryStringIndex = Request.RawUrl.IndexOf('?');
|
|
var queryString = queryStringIndex == -1 ? string.Empty : Request.RawUrl.Substring(queryStringIndex);
|
|
|
|
var isLiveStream = (state.RunTimeTicks ?? 0) == 0;
|
|
|
|
// Main stream
|
|
var playlistUrl = isLiveStream ? "live.m3u8" : "main.m3u8";
|
|
playlistUrl += queryString;
|
|
|
|
var request = (GetMasterHlsVideoStream)state.Request;
|
|
|
|
var subtitleStreams = state.AllMediaStreams
|
|
.Where(i => i.IsTextSubtitleStream)
|
|
.ToList();
|
|
|
|
var subtitleGroup = subtitleStreams.Count > 0 && request.SubtitleMethod == SubtitleDeliveryMethod.Hls ?
|
|
"subs" :
|
|
null;
|
|
|
|
AppendPlaylist(builder, playlistUrl, totalBitrate, subtitleGroup);
|
|
|
|
if (EnableAdaptiveBitrateStreaming(state, isLiveStream))
|
|
{
|
|
var requestedVideoBitrate = state.VideoRequest.VideoBitRate.Value;
|
|
|
|
// By default, vary by just 200k
|
|
var variation = GetBitrateVariation(totalBitrate);
|
|
|
|
var newBitrate = totalBitrate - variation;
|
|
var variantUrl = ReplaceBitrate(playlistUrl, requestedVideoBitrate, (requestedVideoBitrate - variation));
|
|
AppendPlaylist(builder, variantUrl, newBitrate, subtitleGroup);
|
|
|
|
variation *= 2;
|
|
newBitrate = totalBitrate - variation;
|
|
variantUrl = ReplaceBitrate(playlistUrl, requestedVideoBitrate, (requestedVideoBitrate - variation));
|
|
AppendPlaylist(builder, variantUrl, newBitrate, subtitleGroup);
|
|
}
|
|
|
|
if (!string.IsNullOrWhiteSpace(subtitleGroup))
|
|
{
|
|
AddSubtitles(state, subtitleStreams, builder);
|
|
}
|
|
|
|
return builder.ToString();
|
|
}
|
|
|
|
private string ReplaceBitrate(string url, int oldValue, int newValue)
|
|
{
|
|
return url.Replace(
|
|
"videobitrate=" + oldValue.ToString(UsCulture),
|
|
"videobitrate=" + newValue.ToString(UsCulture),
|
|
StringComparison.OrdinalIgnoreCase);
|
|
}
|
|
|
|
private void AddSubtitles(StreamState state, IEnumerable<MediaStream> subtitles, StringBuilder builder)
|
|
{
|
|
var selectedIndex = state.SubtitleStream == null ? (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},URI=\"{3}\",LANGUAGE=\"{4}\"";
|
|
|
|
var name = stream.Language;
|
|
|
|
var isDefault = selectedIndex.HasValue && selectedIndex.Value == stream.Index;
|
|
var isForced = stream.IsForced;
|
|
|
|
if (string.IsNullOrWhiteSpace(name)) name = stream.Codec ?? "Unknown";
|
|
|
|
var url = string.Format("{0}/Subtitles/{1}/subtitles.m3u8?SegmentLength={2}",
|
|
state.Request.MediaSourceId,
|
|
stream.Index.ToString(UsCulture),
|
|
30.ToString(UsCulture));
|
|
|
|
var line = string.Format(format,
|
|
name,
|
|
isDefault ? "YES" : "NO",
|
|
isForced ? "YES" : "NO",
|
|
url,
|
|
stream.Language ?? "Unknown");
|
|
|
|
builder.AppendLine(line);
|
|
}
|
|
}
|
|
|
|
private bool EnableAdaptiveBitrateStreaming(StreamState state, bool isLiveStream)
|
|
{
|
|
// Within the local network this will likely do more harm than good.
|
|
if (Request.IsLocal || NetworkManager.IsInLocalNetwork(Request.RemoteIp))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
var request = state.Request as GetMasterHlsVideoStream;
|
|
if (request != null && !request.EnableAdaptiveBitrateStreaming)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (isLiveStream || string.IsNullOrWhiteSpace(state.MediaPath))
|
|
{
|
|
// Opening live streams is so slow it's not even worth it
|
|
return false;
|
|
}
|
|
|
|
if (string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (string.Equals(state.OutputAudioCodec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return state.VideoRequest.VideoBitRate.HasValue;
|
|
}
|
|
|
|
private void AppendPlaylist(StringBuilder builder, string url, int bitrate, string subtitleGroup)
|
|
{
|
|
var header = "#EXT-X-STREAM-INF:BANDWIDTH=" + bitrate.ToString(UsCulture);
|
|
|
|
if (!string.IsNullOrWhiteSpace(subtitleGroup))
|
|
{
|
|
header += string.Format(",SUBTITLES=\"{0}\"", subtitleGroup);
|
|
}
|
|
|
|
builder.AppendLine(header);
|
|
builder.AppendLine(url);
|
|
}
|
|
|
|
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 async Task<object> GetPlaylistAsync(VideoStreamRequest request, string name)
|
|
{
|
|
var state = await GetState(request, CancellationToken.None).ConfigureAwait(false);
|
|
|
|
var builder = new StringBuilder();
|
|
|
|
builder.AppendLine("#EXTM3U");
|
|
builder.AppendLine("#EXT-X-VERSION:3");
|
|
builder.AppendLine("#EXT-X-TARGETDURATION:" + state.SegmentLength.ToString(UsCulture));
|
|
builder.AppendLine("#EXT-X-MEDIA-SEQUENCE:0");
|
|
builder.AppendLine("#EXT-X-ALLOW-CACHE:NO");
|
|
|
|
var queryStringIndex = Request.RawUrl.IndexOf('?');
|
|
var queryString = queryStringIndex == -1 ? string.Empty : Request.RawUrl.Substring(queryStringIndex);
|
|
|
|
var seconds = TimeSpan.FromTicks(state.RunTimeTicks ?? 0).TotalSeconds;
|
|
|
|
var index = 0;
|
|
|
|
while (seconds > 0)
|
|
{
|
|
var length = seconds >= state.SegmentLength ? state.SegmentLength : seconds;
|
|
|
|
builder.AppendLine("#EXTINF:" + length.ToString(UsCulture) + ",");
|
|
|
|
builder.AppendLine(string.Format("hlsdynamic/{0}/{1}.ts{2}",
|
|
|
|
name,
|
|
index.ToString(UsCulture),
|
|
queryString));
|
|
|
|
seconds -= state.SegmentLength;
|
|
index++;
|
|
}
|
|
|
|
builder.AppendLine("#EXT-X-ENDLIST");
|
|
|
|
var playlistText = builder.ToString();
|
|
|
|
return ResultFactory.GetResult(playlistText, Common.Net.MimeTypes.GetMimeType("playlist.m3u8"), new Dictionary<string, string>());
|
|
}
|
|
|
|
protected override string GetAudioArguments(StreamState state)
|
|
{
|
|
var codec = state.OutputAudioCodec;
|
|
|
|
if (string.Equals(codec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "-codec:a:0 copy";
|
|
}
|
|
|
|
var args = "-codec:a:0 " + codec;
|
|
|
|
var channels = state.OutputAudioChannels;
|
|
|
|
if (channels.HasValue)
|
|
{
|
|
args += " -ac " + channels.Value;
|
|
}
|
|
|
|
var bitrate = state.OutputAudioBitrate;
|
|
|
|
if (bitrate.HasValue)
|
|
{
|
|
args += " -ab " + bitrate.Value.ToString(UsCulture);
|
|
}
|
|
|
|
args += " " + GetAudioFilterParam(state, true);
|
|
|
|
return args;
|
|
}
|
|
|
|
protected override string GetVideoArguments(StreamState state)
|
|
{
|
|
var codec = state.OutputVideoCodec;
|
|
|
|
// See if we can save come cpu cycles by avoiding encoding
|
|
if (string.Equals(codec, "copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return state.VideoStream != null && IsH264(state.VideoStream) ? "-codec:v:0 copy -bsf:v h264_mp4toannexb" : "-codec:v:0 copy";
|
|
}
|
|
|
|
var keyFrameArg = string.Format(" -force_key_frames expr:gte(t,n_forced*{0})",
|
|
state.SegmentLength.ToString(UsCulture));
|
|
|
|
var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream;
|
|
|
|
var args = "-codec:v:0 " + codec + " " + GetVideoQualityParam(state, H264Encoder, true) + keyFrameArg;
|
|
|
|
// Add resolution params, if specified
|
|
if (!hasGraphicalSubs)
|
|
{
|
|
args += GetOutputSizeParam(state, codec, false);
|
|
}
|
|
|
|
// This is for internal graphical subs
|
|
if (hasGraphicalSubs)
|
|
{
|
|
args += GetGraphicalSubtitleParam(state, codec);
|
|
}
|
|
|
|
return args;
|
|
}
|
|
|
|
protected override string GetCommandLineArguments(string outputPath, string transcodingJobId, StreamState state, bool isEncoding)
|
|
{
|
|
var threads = GetNumberOfThreads(state, false);
|
|
|
|
var inputModifier = GetInputModifier(state);
|
|
|
|
// If isEncoding is true we're actually starting ffmpeg
|
|
var startNumberParam = isEncoding ? GetStartNumber(state).ToString(UsCulture) : "0";
|
|
|
|
var args = string.Format("{0} {1} -map_metadata -1 -threads {2} {3} {4} -copyts -flags -global_header {5} -hls_time {6} -start_number {7} -hls_list_size {8} -y \"{9}\"",
|
|
inputModifier,
|
|
GetInputArgument(transcodingJobId, state),
|
|
threads,
|
|
GetMapArgs(state),
|
|
GetVideoArguments(state),
|
|
GetAudioArguments(state),
|
|
state.SegmentLength.ToString(UsCulture),
|
|
startNumberParam,
|
|
state.HlsListSize.ToString(UsCulture),
|
|
outputPath
|
|
).Trim();
|
|
|
|
return args;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the segment file extension.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected override string GetSegmentFileExtension(StreamState state)
|
|
{
|
|
return ".ts";
|
|
}
|
|
}
|
|
}
|