diff options
Diffstat (limited to 'MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs')
| -rw-r--r-- | MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs | 61 |
1 files changed, 34 insertions, 27 deletions
diff --git a/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs b/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs index 9071ef18f..7f74e85e9 100644 --- a/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs +++ b/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs @@ -284,7 +284,7 @@ namespace MediaBrowser.Api.Playback.Hls //} Logger.LogDebug("returning {0} [general case]", segmentPath); - job = job ?? ApiEntryPoint.Instance.OnTranscodeBeginRequest(playlistPath, TranscodingJobType); + job ??= ApiEntryPoint.Instance.OnTranscodeBeginRequest(playlistPath, TranscodingJobType); return await GetSegmentResult(state, playlistPath, segmentPath, segmentExtension, requestedIndex, job, cancellationToken).ConfigureAwait(false); } @@ -438,8 +438,7 @@ namespace MediaBrowser.Api.Playback.Hls { var segmentId = "0"; - var segmentRequest = request as GetHlsVideoSegment; - if (segmentRequest != null) + if (request is GetHlsVideoSegment segmentRequest) { segmentId = segmentRequest.SegmentId; } @@ -690,8 +689,7 @@ namespace MediaBrowser.Api.Playback.Hls return false; } - var request = state.Request as IMasterHlsRequest; - if (request != null && !request.EnableAdaptiveBitrateStreaming) + if (state.Request is IMasterHlsRequest request && !request.EnableAdaptiveBitrateStreaming) { return false; } @@ -1108,61 +1106,69 @@ namespace MediaBrowser.Api.Playback.Hls } else { + var gopArg = string.Empty; var keyFrameArg = string.Format( CultureInfo.InvariantCulture, " -force_key_frames:0 \"expr:gte(t,{0}+n_forced*{1})\"", GetStartNumber(state) * state.SegmentLength, state.SegmentLength); - if (state.TargetFramerate.HasValue) + + var framerate = state.VideoStream?.RealFrameRate; + + if (framerate.HasValue) { // This is to make sure keyframe interval is limited to our segment, // as forcing keyframes is not enough. // Example: we encoded half of desired length, then codec detected // scene cut and inserted a keyframe; next forced keyframe would - // be created outside of segment, which breaks seeking. - keyFrameArg += string.Format( + // be created outside of segment, which breaks seeking + // -sc_threshold 0 is used to prevent the hardware encoder from post processing to break the set keyframe + gopArg = string.Format( CultureInfo.InvariantCulture, - " -g {0} -keyint_min {0}", - (int)(state.SegmentLength * state.TargetFramerate) + " -g {0} -keyint_min {0} -sc_threshold 0", + Math.Ceiling(state.SegmentLength * framerate.Value) ); } - var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode; - args += " " + EncodingHelper.GetVideoQualityParam(state, codec, encodingOptions, GetDefaultEncoderPreset()); - // Unable to force key frames to h264_qsv transcode - if (string.Equals(codec, "h264_qsv", StringComparison.OrdinalIgnoreCase)) + // Unable to force key frames using these hw encoders, set key frames by GOP + if (string.Equals(codec, "h264_qsv", StringComparison.OrdinalIgnoreCase) + || string.Equals(codec, "h264_nvenc", StringComparison.OrdinalIgnoreCase) + || string.Equals(codec, "h264_amf", StringComparison.OrdinalIgnoreCase)) { - Logger.LogInformation("Bug Workaround: Disabling force_key_frames for h264_qsv"); + args += " " + gopArg; } else { - args += " " + keyFrameArg; + args += " " + keyFrameArg + gopArg; } //args += " -mixed-refs 0 -refs 3 -x264opts b_pyramid=0:weightb=0:weightp=0"; + var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode; + + // This is for graphical subs + if (hasGraphicalSubs) + { + args += EncodingHelper.GetGraphicalSubtitleParam(state, encodingOptions, codec); + } // Add resolution params, if specified - if (!hasGraphicalSubs) + else { - args += EncodingHelper.GetOutputSizeParam(state, encodingOptions, codec, true); + args += EncodingHelper.GetOutputSizeParam(state, encodingOptions, codec); } - // This is for internal graphical subs - if (hasGraphicalSubs) + // -start_at_zero is necessary to use with -ss when seeking, + // otherwise the target position cannot be determined. + if (!(state.SubtitleStream != null && state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream)) { - args += EncodingHelper.GetGraphicalSubtitleParam(state, encodingOptions, codec); + args += " -start_at_zero"; } //args += " -flags -global_header"; } - if (args.IndexOf("-copyts", StringComparison.OrdinalIgnoreCase) == -1) - { - args += " -copyts"; - } - if (!string.IsNullOrEmpty(state.OutputVideoSync)) { args += " -vsync " + state.OutputVideoSync; @@ -1188,6 +1194,7 @@ namespace MediaBrowser.Api.Playback.Hls Logger.LogInformation("Current HLS implementation doesn't support non-keyframe breaks but one is requested, ignoring that request"); state.BaseRequest.BreakOnNonKeyFrames = false; } + var inputModifier = EncodingHelper.GetInputModifier(state, encodingOptions); // If isEncoding is true we're actually starting ffmpeg @@ -1205,7 +1212,7 @@ namespace MediaBrowser.Api.Playback.Hls } return string.Format( - "{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -f hls -max_delay 5000000 -avoid_negative_ts disabled -start_at_zero -hls_time {6} -individual_header_trailer 0 -hls_segment_type {7} -start_number {8} -hls_segment_filename \"{9}\" -hls_playlist_type vod -hls_list_size 0 -y \"{10}\"", + "{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -copyts -avoid_negative_ts disabled -f hls -max_delay 5000000 -hls_time {6} -individual_header_trailer 0 -hls_segment_type {7} -start_number {8} -hls_segment_filename \"{9}\" -hls_playlist_type vod -hls_list_size 0 -y \"{10}\"", inputModifier, EncodingHelper.GetInputArgument(state, encodingOptions), threads, |