private async void TranscodeProcessor(object args)
{
FFMpegTranscodeThreadData data = (FFMpegTranscodeThreadData)args;
bool isStream = data.Context.Live && !data.Context.Segmented;
bool isFile = true;
bool isSlimTv = false;
try
{
if (data.Context.Segmented == true)
{
await FFMpegPlaylistManifest.CreatePlaylistFilesAsync(data.TranscodeData).ConfigureAwait(false);
}
int liveChannelId = 0;
bool runProcess = true;
using (IResourceAccessor mediaAccessor = data.TranscodeData.GetFirstResourceAccessor())
{
if (mediaAccessor is ITranscodeLiveAccessor tla)
{
isSlimTv = true;
liveChannelId = tla.ChannelId;
}
}
data.Context.Start();
data.TranscodeData.ClearRuntimeResourcePaths();
int exitCode = -1;
string identifier = "Transcode_" + data.TranscodeData.ClientId;
if (isSlimTv)
{
var result = await _slimtTvHandler.StartTuningAsync(identifier, liveChannelId).ConfigureAwait(false);
if (!result.Success)
{
_logger.Error("FFMpegMediaConverter: Transcoder unable to start timeshifting for channel {0}", liveChannelId);
runProcess = false;
exitCode = 5000;
}
else
{
using (var mediaAccessor = await _slimtTvHandler.GetDefaultAccessorAsync(liveChannelId).ConfigureAwait(false))
{
if (mediaAccessor is INetworkResourceAccessor)
{
int mediaStreamIndex = data.TranscodeData.FirstResourceIndex;
data.TranscodeData.AddRuntimeResourcePath(ResourcePath.Deserialize(data.TranscodeData.InputMediaFilePaths[mediaStreamIndex]), mediaAccessor.CanonicalLocalResourcePath.Serialize());
}
else
{
_logger.Error("FFMpegMediaConverter: Transcoder unable to start timeshifting for channel {0} because no URL was found", liveChannelId);
runProcess = false;
exitCode = 5001;
}
}
}
}
ResourcePath firstPath;
using (var mediaAccessor = data.TranscodeData.GetFirstResourceAccessor())
{
firstPath = mediaAccessor.CanonicalLocalResourcePath;
if (mediaAccessor is INetworkResourceAccessor)
{
isFile = false;
}
}
if (runProcess)
{
//Prepare resources
List <IDisposable> disposables = new List <IDisposable>();
foreach (var res in data.TranscodeData.GetResourceAccessors())
{
if (!(res is INetworkResourceAccessor))
{
var rah = new LocalFsResourceAccessorHelper(res);
data.TranscodeData.AddRuntimeResourcePath(res.CanonicalLocalResourcePath, rah.LocalFsResourceAccessor.LocalFileSystemPath);
var accessToken = rah.LocalFsResourceAccessor.EnsureLocalFileSystemAccess();
if (accessToken != null)
{
disposables.Add(accessToken);
}
disposables.Add(rah);
}
disposables.Add(res);
}
ProcessStartInfo startInfo = new ProcessStartInfo()
{
FileName = data.TranscodeData.TranscoderBinPath,
WorkingDirectory = data.TranscodeData.WorkPath,
Arguments = data.TranscodeData.TranscoderArguments,
UseShellExecute = false,
CreateNoWindow = true,
RedirectStandardOutput = true,
RedirectStandardError = true,
RedirectStandardInput = true,
StandardOutputEncoding = Encoding.UTF8,
StandardErrorEncoding = Encoding.UTF8
};
_logger.Debug("FFMpegMediaConverter: Transcoder '{0}' invoked with command line arguments '{1}'", data.TranscodeData.TranscoderBinPath, data.TranscodeData.TranscoderArguments);
IntPtr userToken = IntPtr.Zero;
try
{
//TODO: Fix usages of obsolete and deprecated methods when alternative is available
#if !TRANSCODE_CONSOLE_TEST
using (ServiceRegistration.Get <IImpersonationService>().CheckImpersonationFor(firstPath))
{
//Only when the server is running as a service it will have elevation rights
using (ImpersonationProcess ffmpeg = new ImpersonationProcess {
StartInfo = startInfo
})
{
if (isFile && !ImpersonationHelper.GetTokenByProcess(out userToken, true))
{
return;
}
#else
{
using (Process ffmpeg = new Process()
{
StartInfo = startInfo
})
{
#endif
ffmpeg.EnableRaisingEvents = true; //Enable raising events because Process does not raise events by default.
if (isStream == false)
{
ffmpeg.OutputDataReceived += data.Context.OutputDataReceived;
}
ffmpeg.ErrorDataReceived += data.Context.ErrorDataReceived;
#if !TRANSCODE_CONSOLE_TEST
if (isFile)
{
ffmpeg.StartAsUser(userToken);
}
else
{
ffmpeg.Start();
}
#else
ffmpeg.Start();
#endif
ffmpeg.BeginErrorReadLine();
if (isStream == false)
{
ffmpeg.BeginOutputReadLine();
}
else
{
data.TranscodeData.LiveStream = ffmpeg.StandardOutput.BaseStream;
}
RunTranscodingProcess(ffmpeg, data, isStream);
ffmpeg.WaitForExit();
exitCode = ffmpeg.ExitCode;
ffmpeg.Close();
}
}
}
catch (Exception ex)
{
if (isStream || data.TranscodeData.OutputFilePath == null)
{
_logger.Error("FFMpegMediaConverter: Transcoder command failed for stream '{0}'", ex, data.TranscodeData.TranscodeId);
}
else
{
_logger.Error("FFMpegMediaConverter: Transcoder command failed for file '{0}'", ex, data.TranscodeData.OutputFilePath);
}
data.Context.Fail();
}
finally
{
#if !TRANSCODE_CONSOLE_TEST
if (userToken != IntPtr.Zero)
{
NativeMethods.CloseHandle(userToken);
}
#endif
data.TranscodeData.LiveStream?.Dispose();
foreach (var disposable in disposables)
{
disposable?.Dispose();
}
}
}
if (exitCode > 0)
{
data.Context.Fail();
}
else
{
data.Context.Stop();
}
_ffMpegEncoderHandler.EndEncoding(data.TranscodeData.Encoder, data.TranscodeData.TranscodeId);
if (isSlimTv)
{
if (await _slimtTvHandler.EndTuningAsync(identifier).ConfigureAwait(false) == false)
{
_logger.Error("FFMpegMediaConverter: Transcoder unable to stop timeshifting for channel {0}", liveChannelId);
}
}
string filePath = data.Context.TargetFile;
bool isFolder = false;
if (string.IsNullOrEmpty(data.Context.SegmentDir) == false)
{
filePath = data.Context.SegmentDir;
isFolder = true;
}
if (exitCode > 0 || data.Context.Aborted)
{
if (exitCode > 0)
{
if (isStream || data.TranscodeData.OutputFilePath == null)
{
_logger.Debug("FFMpegMediaConverter: Transcoder command failed with error {1} for stream '{0}'", data.TranscodeData.TranscodeId, exitCode);
}
else
{
_logger.Debug("FFMpegMediaConverter: Transcoder command failed with error {1} for file '{0}'", data.TranscodeData.OutputFilePath, exitCode);
}
}
if (data.Context.Aborted)
{
if (isStream || data.TranscodeData.OutputFilePath == null)
{
_logger.Debug("FFMpegMediaConverter: Transcoder command aborted for stream '{0}'", data.TranscodeData.TranscodeId);
}
else
{
_logger.Debug("FFMpegMediaConverter: Transcoder command aborted for file '{0}'", data.TranscodeData.OutputFilePath);
}
}
else
{
_logger.Debug("FFMpegMediaConverter: FFMpeg error \n {0}", data.Context.ConsoleErrorOutput);
}
data.Context.DeleteFiles();
}
else
{
//Touch cache files so they will not be cleaned up
if (isFolder == false)
{
TouchFile(filePath);
}
else
{
TouchDirectory(filePath);
}
}
}
catch (Exception ex)
{
if (isStream || data.TranscodeData.OutputFilePath == null)
{
_logger.Error("FFMpegMediaConverter: Transcoder failed processing '{0}'", ex, data.TranscodeData.TranscodeId);
}
else
{
_logger.Error("FFMpegMediaConverter: Transcoder failed processing file '{0}'", ex, data.TranscodeData.OutputFilePath);
}
}
finally
{
await RemoveTranscodeContextAsync(data.TranscodeData.ClientId, data.TranscodeData.TranscodeId, data.Context).ConfigureAwait(false);
}
}
protected override async Task <TranscodeContext> TranscodeVideoAsync(string clientId, VideoTranscoding video, double timeStart, double timeDuration, bool waitForBuffer)
{
FFMpegTranscodeContext context = new FFMpegTranscodeContext(_cacheEnabled, _cachePath);
context.TargetDuration = video.SourceMediaDuration;
if (timeStart == 0 && video.TargetIsLive == false && _cacheEnabled)
{
timeDuration = 0;
context.Partial = false;
}
else if (video.TargetVideoContainer == VideoContainer.Hls)
{
context.Partial = true;
}
else
{
video.TargetIsLive = true;
context.Partial = true;
}
if (video.TargetVideoContainer == VideoContainer.Unknown)
{
video.TargetVideoContainer = video.SourceVideoContainer;
}
bool embeddedSupported = false;
SubtitleCodec embeddedSubCodec = SubtitleCodec.Unknown;
if (video.TargetSubtitleSupport == SubtitleSupport.Embedded)
{
if (video.TargetVideoContainer == VideoContainer.Matroska)
{
embeddedSupported = true;
embeddedSubCodec = SubtitleCodec.Ass;
video.TargetSubtitleCodec = SubtitleCodec.Ass;
}
else if (video.TargetVideoContainer == VideoContainer.Mp4)
{
embeddedSupported = true;
embeddedSubCodec = SubtitleCodec.MovTxt;
video.TargetSubtitleCodec = SubtitleCodec.MovTxt;
}
else if (video.TargetVideoContainer == VideoContainer.Hls)
{
embeddedSupported = true;
embeddedSubCodec = SubtitleCodec.WebVtt;
video.TargetSubtitleCodec = SubtitleCodec.WebVtt;
}
else if (video.TargetVideoContainer == VideoContainer.Avi)
{
embeddedSupported = true;
embeddedSubCodec = SubtitleCodec.Srt;
video.TargetSubtitleCodec = SubtitleCodec.Srt;
}
//else if (video.TargetVideoContainer == VideoContainer.Mpeg2Ts)
//{
// embeddedSupported = true;
// embeddedSubCodec = SubtitleCodec.DvbSub;
// video.TargetSubtitleCodec = SubtitleCodec.VobSub;
//}
else
{
_logger.Debug("FFMpegMediaConverter: Container {0} does not support embedded subtitles", video.TargetVideoContainer);
}
}
video.TargetSubtitleMime = SubtitleHelper.GetSubtitleMime(video.TargetSubtitleCodec);
video.PreferredSourceSubtitles = await GetSubtitlesAsync(clientId, video, timeStart).ConfigureAwait(false);
string transcodingFile = GetTranscodingVideoFileName(video, timeStart, embeddedSupported);
transcodingFile = Path.Combine(_cachePath, transcodingFile);
if (File.Exists(transcodingFile))
{
//Use non-partial transcode if possible
TranscodeContext existingContext = await GetExistingTranscodeContextAsync(clientId, video.TranscodeId).ConfigureAwait(false);
if (existingContext != null)
{
existingContext.TargetFile = transcodingFile;
if (existingContext.Stream == null)
{
existingContext.AssignStream(await GetFileStreamAsync(transcodingFile).ConfigureAwait(false));
}
if (existingContext.CurrentDuration.TotalSeconds == 0)
{
double bitrate = 0;
if (video.TargetVideoBitrate.HasValue && video.TargetAudioBitrate.HasValue)
{
bitrate = video.TargetVideoBitrate.Value + video.TargetAudioBitrate.Value;
}
else if (video.SourceVideoStream.Bitrate.HasValue && video.SourceAudioStreams.Any(a => a.Bitrate > 0))
{
bitrate = video.SourceVideoStream.Bitrate.Value + video.SourceAudioStreams.Max(a => a.Bitrate ?? 0);
}
bitrate *= 1024; //Bitrate in bits/s
if (bitrate > 0)
{
long startByte = Convert.ToInt64((bitrate * timeStart) / 8.0);
if (existingContext.Stream.Length > startByte)
{
return(existingContext);
}
}
}
else
{
if (existingContext.CurrentDuration.TotalSeconds > timeStart)
{
return(existingContext);
}
}
}
else
{
//Presume that it is a cached file
TouchFile(transcodingFile);
context.Partial = false;
context.TargetFile = transcodingFile;
context.AssignStream(await GetFileStreamAsync(transcodingFile).ConfigureAwait(false));
return(context);
}
}
if (video.TargetVideoContainer == VideoContainer.Hls)
{
long requestedSegmentSequence = requestedSegmentSequence = Convert.ToInt64(timeStart / HLSSegmentTimeInSeconds);
if (requestedSegmentSequence > 0)
{
requestedSegmentSequence--; //1 segment file margin
}
string pathName = FFMpegPlaylistManifest.GetPlaylistFolderFromTranscodeFile(_cachePath, transcodingFile);
string playlist = Path.Combine(pathName, PlaylistManifest.PLAYLIST_MANIFEST_FILE_NAME);
string segmentFile = Path.Combine(pathName, requestedSegmentSequence.ToString("00000") + ".ts");
if (File.Exists(playlist) == true && File.Exists(segmentFile) == true)
{
//Use exisitng context if possible
TranscodeContext existingContext = await GetExistingTranscodeContextAsync(clientId, video.TranscodeId).ConfigureAwait(false);
if (existingContext != null)
{
if (existingContext.LastSegment > requestedSegmentSequence)
{
existingContext.TargetFile = playlist;
existingContext.SegmentDir = pathName;
if (existingContext.Stream == null)
{
existingContext.AssignStream(await GetFileStreamAsync(playlist).ConfigureAwait(false));
}
existingContext.HlsBaseUrl = video.HlsBaseUrl;
return(existingContext);
}
}
else
{
//Presume that it is a cached file
TouchDirectory(pathName);
context.Partial = false;
context.TargetFile = playlist;
context.SegmentDir = pathName;
context.HlsBaseUrl = video.HlsBaseUrl;
context.AssignStream(await GetFileStreamAsync(playlist).ConfigureAwait(false));
return(context);
}
}
}
FFMpegTranscodeData data = new FFMpegTranscodeData(_cachePath)
{
TranscodeId = video.TranscodeId, ClientId = clientId
};
if (string.IsNullOrEmpty(video.TranscoderBinPath) == false)
{
data.TranscoderBinPath = video.TranscoderBinPath;
}
if (string.IsNullOrEmpty(video.TranscoderArguments) == false)
{
data.ConcatedFileInput = video.ConcatSourceMediaPaths;
data.TranscoderArguments = video.TranscoderArguments;
data.InputMediaFilePaths = video.SourceMediaPaths;
if (video.PreferredSourceSubtitles != null)
{
foreach (var mediaSourceIndex in video.PreferredSourceSubtitles.Keys)
{
foreach (var sub in video.PreferredSourceSubtitles[mediaSourceIndex])
{
if (string.IsNullOrEmpty(sub.SourcePath) == false)
{
data.AddSubtitle(mediaSourceIndex, sub.SourcePath);
context.TargetSubtitles.Add(sub.SourcePath);
}
}
}
}
data.OutputFilePath = transcodingFile;
context.TargetFile = transcodingFile;
}
else
{
data.Encoder = _ffMpegEncoderHandler.StartEncoding(video.TranscodeId, video.TargetVideoCodec);
_ffMpegCommandline.InitTranscodingParameters(video.ConcatSourceMediaPaths, video.SourceMediaPaths, ref data);
bool useX26XLib = video.TargetVideoCodec == VideoCodec.H264 || video.TargetVideoCodec == VideoCodec.H265;
_ffMpegCommandline.AddTranscodingThreadsParameters(!useX26XLib, ref data);
int subCopyStream = -1;
if (video.PreferredSourceSubtitles.Any())
{
if (video.FirstPreferredSourceSubtitle.IsEmbedded)
{
subCopyStream = video.FirstPreferredSourceSubtitle.StreamIndex;
_ffMpegCommandline.AddSubtitleCopyParameters(video.FirstPreferredSourceSubtitle, data);
}
else if (embeddedSupported)
{
foreach (int mediaSourceIndex in video.PreferredSourceSubtitles.Keys)
{
_ffMpegCommandline.AddSubtitleEmbeddingParameters(mediaSourceIndex, video.PreferredSourceSubtitles[mediaSourceIndex], embeddedSubCodec, timeStart, data);
}
}
else if (video.TargetSubtitleSupport != SubtitleSupport.SoftCoded)
{
video.TargetSubtitleSupport = SubtitleSupport.HardCoded; //Fallback to hardcoded subtitles
_logger.Debug("FFMpegMediaConverter: Soft subs not supported. Fallback to hardcoded subtitles");
}
}
else
{
embeddedSupported = false;
data.OutputArguments.Add("-sn");
}
_ffMpegCommandline.AddTimeParameters(video, timeStart, timeDuration, data);
_ffMpegCommandline.AddStreamMapParameters(video, data);
FFMpegEncoderConfig encoderConfig = _ffMpegEncoderHandler.GetEncoderConfig(data.Encoder);
_ffMpegCommandline.AddVideoParameters(video, data.TranscodeId, encoderConfig, data);
_ffMpegCommandline.AddVideoAudioParameters(video, data);
var result = await _ffMpegCommandline.AddTargetVideoFormatAndOutputFileParametersAsync(video, transcodingFile, timeStart, data).ConfigureAwait(false);
context.TargetFile = result.TranscodingFile;
context.CurrentSegment = result.StartSegment;
if (video.PreferredSourceSubtitles.Any())
{
foreach (var sub in video.PreferredSourceSubtitles.SelectMany(s => s.Value))
{
if (string.IsNullOrEmpty(sub.SourcePath) == false)
{
context.TargetSubtitles.Add(sub.SourcePath);
}
}
}
}
_logger.Info("FFMpegMediaConverter: Invoking transcoder to transcode video file '{0}' for transcode '{1}' with arguments '{2}'", video.SourceMediaPaths.First().Value, video.TranscodeId, String.Join(", ", data.OutputArguments.ToArray()));
context.Start();
context.AssignStream(await ExecuteTranscodingProcessAsync(data, context, waitForBuffer).ConfigureAwait(false));
return(context);
}