public Command ConcatChannel(string ffmpegPath, bool saveReports, Channel channel, string scheme, string host)
{
var resolution = new FrameSize(channel.FFmpegProfile.Resolution.Width, channel.FFmpegProfile.Resolution.Height);
var concatInputFile = new ConcatInputFile(
$"http://localhost:{Settings.ListenPort}/ffmpeg/concat/{channel.Number}",
resolution);
var pipelineBuilder = new PipelineBuilder(
None,
None,
None,
None,
FileSystemLayout.FFmpegReportsFolder,
FileSystemLayout.FontsCacheFolder,
_logger);
FFmpegPipeline pipeline = pipelineBuilder.Concat(
concatInputFile,
FFmpegState.Concat(saveReports, channel.Name));
return GetCommand(ffmpegPath, None, None, None, concatInputFile, pipeline);
}
public async Task<Command> ForPlayoutItem(
string ffmpegPath,
string ffprobePath,
bool saveReports,
Channel channel,
MediaVersion videoVersion,
MediaVersion audioVersion,
string videoPath,
string audioPath,
List<Subtitle> subtitles,
string preferredAudioLanguage,
string preferredSubtitleLanguage,
ChannelSubtitleMode subtitleMode,
DateTimeOffset start,
DateTimeOffset finish,
DateTimeOffset now,
Option<ChannelWatermark> playoutItemWatermark,
Option<ChannelWatermark> globalWatermark,
VaapiDriver vaapiDriver,
string vaapiDevice,
bool hlsRealtime,
FillerKind fillerKind,
TimeSpan inPoint,
TimeSpan outPoint,
long ptsOffset,
Option<int> targetFramerate)
{
MediaStream videoStream = await _ffmpegStreamSelector.SelectVideoStream(videoVersion);
Option<MediaStream> maybeAudioStream =
await _ffmpegStreamSelector.SelectAudioStream(
audioVersion,
channel.StreamingMode,
channel.Number,
preferredAudioLanguage);
Option<Subtitle> maybeSubtitle =
await _ffmpegStreamSelector.SelectSubtitleStream(
videoVersion,
subtitles,
channel.StreamingMode,
channel.Number,
preferredSubtitleLanguage,
subtitleMode);
FFmpegPlaybackSettings playbackSettings = _playbackSettingsCalculator.CalculateSettings(
channel.StreamingMode,
channel.FFmpegProfile,
videoVersion,
videoStream,
maybeAudioStream,
start,
now,
inPoint,
outPoint,
hlsRealtime,
targetFramerate);
Option<WatermarkOptions> watermarkOptions =
await _ffmpegProcessService.GetWatermarkOptions(
ffprobePath,
channel,
playoutItemWatermark,
globalWatermark,
videoVersion,
None,
None);
Option<List<FadePoint>> maybeFadePoints = watermarkOptions
.Map(o => o.Watermark)
.Flatten()
.Where(wm => wm.Mode == ChannelWatermarkMode.Intermittent)
.Map(
wm =>
WatermarkCalculator.CalculateFadePoints(
start,
inPoint,
outPoint,
playbackSettings.StreamSeek,
wm.FrequencyMinutes,
wm.DurationSeconds));
string audioFormat = playbackSettings.AudioFormat switch
{
FFmpegProfileAudioFormat.Aac => AudioFormat.Aac,
FFmpegProfileAudioFormat.Ac3 => AudioFormat.Ac3,
FFmpegProfileAudioFormat.Copy => AudioFormat.Copy,
_ => throw new ArgumentOutOfRangeException($"unexpected audio format {playbackSettings.VideoFormat}")
};
var audioState = new AudioState(
audioFormat,
playbackSettings.AudioChannels,
playbackSettings.AudioBitrate,
playbackSettings.AudioBufferSize,
playbackSettings.AudioSampleRate,
videoPath == audioPath ? playbackSettings.AudioDuration : Option<TimeSpan>.None,
playbackSettings.NormalizeLoudness);
var ffmpegVideoStream = new VideoStream(
videoStream.Index,
videoStream.Codec,
AvailablePixelFormats.ForPixelFormat(videoStream.PixelFormat, _logger),
new FrameSize(videoVersion.Width, videoVersion.Height),
videoVersion.RFrameRate,
videoPath != audioPath); // still image when paths are different
var videoInputFile = new VideoInputFile(videoPath, new List<VideoStream> { ffmpegVideoStream });
Option<AudioInputFile> audioInputFile = maybeAudioStream.Map(
audioStream =>
{
var ffmpegAudioStream = new AudioStream(audioStream.Index, audioStream.Codec, audioStream.Channels);
return new AudioInputFile(audioPath, new List<AudioStream> { ffmpegAudioStream }, audioState);
});
Option<SubtitleInputFile> subtitleInputFile = maybeSubtitle.Map<Option<SubtitleInputFile>>(
subtitle =>
{
if (!subtitle.IsImage && subtitle.SubtitleKind == SubtitleKind.Embedded && !subtitle.IsExtracted)
{
_logger.LogWarning("Subtitles are not yet available for this item");
return None;
}
var ffmpegSubtitleStream = new ErsatzTV.FFmpeg.MediaStream(
subtitle.IsImage ? subtitle.StreamIndex : 0,
subtitle.Codec,
StreamKind.Video);
string path = subtitle.IsImage
? videoPath
: Path.Combine(FileSystemLayout.SubtitleCacheFolder, subtitle.Path);
return new SubtitleInputFile(
path,
new List<ErsatzTV.FFmpeg.MediaStream> { ffmpegSubtitleStream },
false);
// TODO: figure out HLS direct
// channel.StreamingMode == StreamingMode.HttpLiveStreamingDirect);
}).Flatten();
Option<WatermarkInputFile> watermarkInputFile = GetWatermarkInputFile(watermarkOptions, maybeFadePoints);
string videoFormat = playbackSettings.VideoFormat switch
{
FFmpegProfileVideoFormat.Hevc => VideoFormat.Hevc,
FFmpegProfileVideoFormat.H264 => VideoFormat.H264,
FFmpegProfileVideoFormat.Mpeg2Video => VideoFormat.Mpeg2Video,
FFmpegProfileVideoFormat.Copy => VideoFormat.Copy,
_ => throw new ArgumentOutOfRangeException($"unexpected video format {playbackSettings.VideoFormat}")
};
HardwareAccelerationMode hwAccel = playbackSettings.HardwareAcceleration switch
{
HardwareAccelerationKind.Nvenc => HardwareAccelerationMode.Nvenc,
HardwareAccelerationKind.Qsv => HardwareAccelerationMode.Qsv,
HardwareAccelerationKind.Vaapi => HardwareAccelerationMode.Vaapi,
HardwareAccelerationKind.VideoToolbox => HardwareAccelerationMode.VideoToolbox,
_ => HardwareAccelerationMode.None
};
OutputFormatKind outputFormat = channel.StreamingMode == StreamingMode.HttpLiveStreamingSegmenter
? OutputFormatKind.Hls
: OutputFormatKind.MpegTs;
Option<string> hlsPlaylistPath = outputFormat == OutputFormatKind.Hls
? Path.Combine(FileSystemLayout.TranscodeFolder, channel.Number, "live.m3u8")
: Option<string>.None;
Option<string> hlsSegmentTemplate = outputFormat == OutputFormatKind.Hls
? Path.Combine(FileSystemLayout.TranscodeFolder, channel.Number, "live%06d.ts")
: Option<string>.None;
// normalize songs to yuv420p
Option<IPixelFormat> desiredPixelFormat =
videoPath == audioPath ? ffmpegVideoStream.PixelFormat : new PixelFormatYuv420P();
var desiredState = new FrameState(
playbackSettings.RealtimeOutput,
false, // TODO: fallback filler needs to loop
videoFormat,
desiredPixelFormat,
await playbackSettings.ScaledSize.Map(ss => new FrameSize(ss.Width, ss.Height))
.IfNoneAsync(new FrameSize(videoVersion.Width, videoVersion.Height)),
new FrameSize(channel.FFmpegProfile.Resolution.Width, channel.FFmpegProfile.Resolution.Height),
playbackSettings.FrameRate,
playbackSettings.VideoBitrate,
playbackSettings.VideoBufferSize,
playbackSettings.VideoTrackTimeScale,
playbackSettings.Deinterlace);
var ffmpegState = new FFmpegState(
saveReports,
hwAccel,
VaapiDriverName(hwAccel, vaapiDriver),
VaapiDeviceName(hwAccel, vaapiDevice),
playbackSettings.StreamSeek,
finish - now,
channel.StreamingMode != StreamingMode.HttpLiveStreamingDirect,
"ErsatzTV",
channel.Name,
maybeAudioStream.Map(s => Optional(s.Language)).Flatten(),
outputFormat,
hlsPlaylistPath,
hlsSegmentTemplate,
ptsOffset);
_logger.LogDebug("FFmpeg desired state {FrameState}", desiredState);
var pipelineBuilder = new PipelineBuilder(
videoInputFile,
audioInputFile,
watermarkInputFile,
subtitleInputFile,
FileSystemLayout.FFmpegReportsFolder,
FileSystemLayout.FontsCacheFolder,
_logger);
FFmpegPipeline pipeline = pipelineBuilder.Build(ffmpegState, desiredState);
return GetCommand(ffmpegPath, videoInputFile, audioInputFile, watermarkInputFile, None, pipeline);
}
