diff options
Diffstat (limited to 'MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs')
| -rw-r--r-- | MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs index 91d88dc08..11eee1a37 100644 --- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs +++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs @@ -2914,8 +2914,8 @@ namespace MediaBrowser.Controller.MediaEncoding if (time > 0) { - // For direct streaming/remuxing, we seek at the exact position of the keyframe - // However, ffmpeg will seek to previous keyframe when the exact time is the input + // For direct streaming/remuxing, HLS segments start at keyframes. + // However, ffmpeg will seek to previous keyframe when the exact frame time is the input // Workaround this by adding 0.5s offset to the seeking time to get the exact keyframe on most videos. // This will help subtitle syncing. var isHlsRemuxing = state.IsVideoRequest && state.TranscodingType is TranscodingJobType.Hls && IsCopyCodec(state.OutputVideoCodec); @@ -2932,17 +2932,16 @@ namespace MediaBrowser.Controller.MediaEncoding if (state.IsVideoRequest) { - var outputVideoCodec = GetVideoEncoder(state, options); - var segmentFormat = GetSegmentFileExtension(segmentContainer).TrimStart('.'); - - // Important: If this is ever re-enabled, make sure not to use it with wtv because it breaks seeking - // Disable -noaccurate_seek on mpegts container due to the timestamps issue on some clients, - // but it's still required for fMP4 container otherwise the audio can't be synced to the video. - if (!string.Equals(state.InputContainer, "wtv", StringComparison.OrdinalIgnoreCase) - && !string.Equals(segmentFormat, "ts", StringComparison.OrdinalIgnoreCase) - && state.TranscodingType != TranscodingJobType.Progressive - && !state.EnableBreakOnNonKeyFrames(outputVideoCodec) - && (state.BaseRequest.StartTimeTicks ?? 0) > 0) + // 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"; } @@ -7084,7 +7083,7 @@ namespace MediaBrowser.Controller.MediaEncoding } #nullable disable - public void TryStreamCopy(EncodingJobInfo state) + public void TryStreamCopy(EncodingJobInfo state, EncodingOptions options) { if (state.VideoStream is not null && CanStreamCopyVideo(state, state.VideoStream)) { @@ -7101,8 +7100,14 @@ namespace MediaBrowser.Controller.MediaEncoding } } + var preventHlsAudioCopy = state.TranscodingType is TranscodingJobType.Hls + && state.VideoStream is not null + && !IsCopyCodec(state.OutputVideoCodec) + && options.HlsAudioSeekStrategy is HlsAudioSeekStrategy.TranscodeAudio; + if (state.AudioStream is not null - && CanStreamCopyAudio(state, state.AudioStream, state.SupportedAudioCodecs)) + && CanStreamCopyAudio(state, state.AudioStream, state.SupportedAudioCodecs) + && !preventHlsAudioCopy) { state.OutputAudioCodec = "copy"; } |