diff options
Diffstat (limited to 'MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs')
| -rw-r--r-- | MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs | 182 |
1 files changed, 118 insertions, 64 deletions
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs index 65f6b79656..ff8d84d45e 100644 --- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs +++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs @@ -86,6 +86,7 @@ namespace MediaBrowser.Controller.MediaEncoding private readonly Version _minFFmpegQsvVppScaleModeOption = new Version(6, 0); private readonly Version _minFFmpegRkmppHevcDecDoviRpu = new Version(7, 1, 1); private readonly Version _minFFmpegReadrateCatchupOption = new Version(8, 0); + private readonly Version _minFFmpegNoiseBsfDrop = new Version(5, 0); private static readonly string[] _videoProfilesH264 = [ @@ -1267,16 +1268,13 @@ namespace MediaBrowser.Controller.MediaEncoding .Append(_mediaEncoder.GetInputPathArgument(state)); } - // sub2video for external graphical subtitles - if (state.SubtitleStream is not null - && ShouldEncodeSubtitle(state) - && !state.SubtitleStream.IsTextSubtitleStream - && state.SubtitleStream.IsExternal) + if (NeedsExternalSubtitleMuxing(state)) { var subtitlePath = state.SubtitleStream.Path; - var subtitleExtension = Path.GetExtension(subtitlePath.AsSpan()); + var isGraphicalBurnIn = ShouldEncodeSubtitle(state) && !state.SubtitleStream.IsTextSubtitleStream; // dvdsub/vobsub graphical subtitles use .sub+.idx pairs + var subtitleExtension = Path.GetExtension(subtitlePath.AsSpan()); if (subtitleExtension.Equals(".sub", StringComparison.OrdinalIgnoreCase)) { var idxFile = Path.ChangeExtension(subtitlePath, ".idx"); @@ -1307,7 +1305,7 @@ namespace MediaBrowser.Controller.MediaEncoding arg.Append(' ').Append(seekSubParam); } - if (!string.IsNullOrEmpty(canvasArgs)) + if (isGraphicalBurnIn && !string.IsNullOrEmpty(canvasArgs)) { arg.Append(canvasArgs); } @@ -1550,20 +1548,61 @@ namespace MediaBrowser.Controller.MediaEncoding public string GetAudioBitStreamArguments(EncodingJobInfo state, string segmentContainer, string mediaSourceContainer) { - var bitStreamArgs = string.Empty; + var filters = new List<string>(); + + var noiseFilter = GetCopiedAudioTrimBsf(state); + if (!string.IsNullOrEmpty(noiseFilter)) + { + filters.Add(noiseFilter); + } + var segmentFormat = GetSegmentFileExtension(segmentContainer).TrimStart('.'); // Apply aac_adtstoasc bitstream filter when media source is in mpegts. if (string.Equals(segmentFormat, "mp4", StringComparison.OrdinalIgnoreCase) && (string.Equals(mediaSourceContainer, "ts", StringComparison.OrdinalIgnoreCase) || string.Equals(mediaSourceContainer, "aac", StringComparison.OrdinalIgnoreCase) - || string.Equals(mediaSourceContainer, "hls", StringComparison.OrdinalIgnoreCase))) + || string.Equals(mediaSourceContainer, "hls", StringComparison.OrdinalIgnoreCase)) + && IsAAC(state.AudioStream)) + { + filters.Add("aac_adtstoasc"); + } + + return filters.Count == 0 + ? string.Empty + : " -bsf:a " + string.Join(',', filters); + } + + // When video is transcoded, accurate_seek (the default) trims video to the + // exact seek point via decoder-side frame discard. But stream-copied audio + // bypasses the decoder, so it starts from the nearest keyframe — potentially + // seconds before the target. Use the noise bsf to drop copied audio packets + // before the seek target, achieving the same trim precision without + // re-encoding. The noise bsf's drop= parameter requires ffmpeg >= 5.0. + // Important: make sure not to use it with wtv because it breaks seeking + private string GetCopiedAudioTrimBsf(EncodingJobInfo state) + { + if (state.TranscodingType is not TranscodingJobType.Hls + || !state.IsVideoRequest + || IsCopyCodec(state.OutputVideoCodec) + || !IsCopyCodec(state.OutputAudioCodec) + || string.Equals(state.InputContainer, "wtv", StringComparison.OrdinalIgnoreCase) + || _mediaEncoder.EncoderVersion < _minFFmpegNoiseBsfDrop) { - bitStreamArgs = GetBitStreamArgs(state, MediaStreamType.Audio); - bitStreamArgs = string.IsNullOrEmpty(bitStreamArgs) ? string.Empty : " " + bitStreamArgs; + return null; + } + + var startTicks = state.BaseRequest.StartTimeTicks ?? 0; + if (startTicks <= 0) + { + return null; } - return bitStreamArgs; + var seekSeconds = startTicks / (double)TimeSpan.TicksPerSecond; + return string.Format( + CultureInfo.InvariantCulture, + "noise=drop='lt(pts*tb\\,{0:F3})'", + seekSeconds); } public static string GetSegmentFileExtension(string segmentContainer) @@ -1766,13 +1805,13 @@ namespace MediaBrowser.Controller.MediaEncoding { param += encoderPreset switch { - EncoderPreset.veryslow => " -preset p7", - EncoderPreset.slower => " -preset p6", - EncoderPreset.slow => " -preset p5", - EncoderPreset.medium => " -preset p4", - EncoderPreset.fast => " -preset p3", - EncoderPreset.faster => " -preset p2", - _ => " -preset p1" + EncoderPreset.veryslow => " -preset p7", + EncoderPreset.slower => " -preset p6", + EncoderPreset.slow => " -preset p5", + EncoderPreset.medium => " -preset p4", + EncoderPreset.fast => " -preset p3", + EncoderPreset.faster => " -preset p2", + _ => " -preset p1" }; } else if (string.Equals(videoEncoder, "h264_amf", StringComparison.OrdinalIgnoreCase) // h264 (h264_amf) @@ -1782,11 +1821,11 @@ namespace MediaBrowser.Controller.MediaEncoding { param += encoderPreset switch { - EncoderPreset.veryslow => " -quality quality", - EncoderPreset.slower => " -quality quality", - EncoderPreset.slow => " -quality quality", - EncoderPreset.medium => " -quality balanced", - _ => " -quality speed" + EncoderPreset.veryslow => " -quality quality", + EncoderPreset.slower => " -quality quality", + EncoderPreset.slow => " -quality quality", + EncoderPreset.medium => " -quality balanced", + _ => " -quality speed" }; if (string.Equals(videoEncoder, "hevc_amf", StringComparison.OrdinalIgnoreCase) @@ -1806,11 +1845,11 @@ namespace MediaBrowser.Controller.MediaEncoding { param += encoderPreset switch { - EncoderPreset.veryslow => " -prio_speed 0", - EncoderPreset.slower => " -prio_speed 0", - EncoderPreset.slow => " -prio_speed 0", - EncoderPreset.medium => " -prio_speed 0", - _ => " -prio_speed 1" + EncoderPreset.veryslow => " -prio_speed 0", + EncoderPreset.slower => " -prio_speed 0", + EncoderPreset.slow => " -prio_speed 0", + EncoderPreset.medium => " -prio_speed 0", + _ => " -prio_speed 1" }; } @@ -2017,11 +2056,15 @@ namespace MediaBrowser.Controller.MediaEncoding args += keyFrameArg + gopArg; } - // global_header produced by AMD HEVC VA-API encoder causes non-playable fMP4 on iOS + // The in-band Parameter Sets generated by the AMD HEVC VA-API encoder is inconsistent + // with the extradata generated by ffmpeg, causing decoding failures when using hvc1. if (string.Equals(codec, "hevc_vaapi", StringComparison.OrdinalIgnoreCase) && _mediaEncoder.IsVaapiDeviceAmd) { - args += " -flags:v -global_header"; + // Extracting the extradata from the in-band PS to bypass the issue. + // This can be removed once the issue is resolved in libva or Mesa. + // Transcoding is unavoidable here, so using BSF will not conflict with BSF in remuxing. + args += " -flags:v -global_header -bsf:v extract_extradata=remove=0"; } return args; @@ -2762,25 +2805,29 @@ namespace MediaBrowser.Controller.MediaEncoding || string.Equals(audioCodec, "ac3", StringComparison.OrdinalIgnoreCase) || string.Equals(audioCodec, "eac3", StringComparison.OrdinalIgnoreCase)) { +#pragma warning disable SA1008 return (inputChannels, outputChannels) switch { - (>= 6, >= 6 or 0) => Math.Min(640000, bitrate), - (> 0, > 0) => Math.Min(outputChannels * 128000, bitrate), - (> 0, _) => Math.Min(inputChannels * 128000, bitrate), + ( >= 6, >= 6 or 0) => Math.Min(640000, bitrate), + ( > 0, > 0) => Math.Min(outputChannels * 128000, bitrate), + ( > 0, _) => Math.Min(inputChannels * 128000, bitrate), (_, _) => Math.Min(384000, bitrate) }; +#pragma warning restore SA1008 } if (string.Equals(audioCodec, "dts", StringComparison.OrdinalIgnoreCase) || string.Equals(audioCodec, "dca", StringComparison.OrdinalIgnoreCase)) { +#pragma warning disable SA1008 return (inputChannels, outputChannels) switch { - (>= 6, >= 6 or 0) => Math.Min(768000, bitrate), - (> 0, > 0) => Math.Min(outputChannels * 136000, bitrate), - (> 0, _) => Math.Min(inputChannels * 136000, bitrate), + ( >= 6, >= 6 or 0) => Math.Min(768000, bitrate), + ( > 0, > 0) => Math.Min(outputChannels * 136000, bitrate), + ( > 0, _) => Math.Min(inputChannels * 136000, bitrate), (_, _) => Math.Min(672000, bitrate) }; +#pragma warning restore SA1008 } // Empty bitrate area is not allow on iOS @@ -3001,23 +3048,6 @@ namespace MediaBrowser.Controller.MediaEncoding } seekParam += string.Format(CultureInfo.InvariantCulture, "-ss {0}", _mediaEncoder.GetTimeParameter(seekTick)); - - if (state.IsVideoRequest) - { - // If we are remuxing, then the copied stream cannot be seeked accurately (it will seek to the nearest - // keyframe). If we are using fMP4, then force all other streams to use the same inaccurate seeking to - // avoid A/V sync issues which cause playback issues on some devices. - // When remuxing video, the segment start times correspond to key frames in the source stream, so this - // option shouldn't change the seeked point that much. - // Important: make sure not to use it with wtv because it breaks seeking - if (state.TranscodingType is TranscodingJobType.Hls - && string.Equals(segmentContainer, "mp4", StringComparison.OrdinalIgnoreCase) - && (IsCopyCodec(state.OutputVideoCodec) || IsCopyCodec(state.OutputAudioCodec)) - && !string.Equals(state.InputContainer, "wtv", StringComparison.OrdinalIgnoreCase)) - { - seekParam += " -noaccurate_seek"; - } - } } return seekParam; @@ -3072,11 +3102,8 @@ namespace MediaBrowser.Controller.MediaEncoding int audioStreamIndex = FindIndex(state.MediaSource.MediaStreams, state.AudioStream); if (state.AudioStream.IsExternal) { - bool hasExternalGraphicsSubs = state.SubtitleStream is not null - && ShouldEncodeSubtitle(state) - && state.SubtitleStream.IsExternal - && !state.SubtitleStream.IsTextSubtitleStream; - int externalAudioMapIndex = hasExternalGraphicsSubs ? 2 : 1; + bool hasExternalSubAsInput = NeedsExternalSubtitleMuxing(state); + int externalAudioMapIndex = hasExternalSubAsInput ? 2 : 1; args += string.Format( CultureInfo.InvariantCulture, @@ -3104,12 +3131,31 @@ namespace MediaBrowser.Controller.MediaEncoding } else if (subtitleMethod == SubtitleDeliveryMethod.Embed) { - int subtitleStreamIndex = FindIndex(state.MediaSource.MediaStreams, state.SubtitleStream); + if (state.SubtitleStream.IsExternal) + { + // External subtitle file is added as second FFmpeg input. + // For single-stream files (SRT/ASS/VTT) the in-file index is always 0. + // For multi-stream containers (MKS) we count how many streams from + // the same file appear before the selected one. + var inFileIndex = state.MediaSource.MediaStreams + .Where(s => string.Equals(s.Path, state.SubtitleStream.Path, StringComparison.Ordinal)) + .TakeWhile(s => s.Index != state.SubtitleStream.Index) + .Count(); - args += string.Format( - CultureInfo.InvariantCulture, - " -map 0:{0}", - subtitleStreamIndex); + args += string.Format( + CultureInfo.InvariantCulture, + " -map 1:{0}", + inFileIndex); + } + else + { + int subtitleStreamIndex = FindIndex(state.MediaSource.MediaStreams, state.SubtitleStream); + + args += string.Format( + CultureInfo.InvariantCulture, + " -map 0:{0}", + subtitleStreamIndex); + } } else if (state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream) { @@ -7886,6 +7932,14 @@ namespace MediaBrowser.Controller.MediaEncoding || (state.BaseRequest.AlwaysBurnInSubtitleWhenTranscoding && !IsCopyCodec(state.OutputVideoCodec)); } + private static bool NeedsExternalSubtitleMuxing(EncodingJobInfo state) + { + return state.SubtitleStream is not null + && state.SubtitleStream.IsExternal + && (state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Embed + || (ShouldEncodeSubtitle(state) && !state.SubtitleStream.IsTextSubtitleStream)); + } + public static string GetVideoSyncOption(string videoSync, Version encoderVersion) { if (string.IsNullOrEmpty(videoSync)) |