diff options
Diffstat (limited to 'MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs')
| -rw-r--r-- | MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs index c73170fcf..939a473c5 100644 --- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs +++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs @@ -1736,5 +1736,187 @@ namespace MediaBrowser.Controller.MediaEncoding return threads; } + + public string GetSubtitleEmbedArguments(EncodingJobInfo state) + { + if (state.SubtitleStream == null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Embed) + { + return string.Empty; + } + + var format = state.SupportedSubtitleCodecs.FirstOrDefault(); + string codec; + + if (string.IsNullOrWhiteSpace(format) || string.Equals(format, state.SubtitleStream.Codec, StringComparison.OrdinalIgnoreCase)) + { + codec = "copy"; + } + else + { + codec = format; + } + + // Muxing in dvbsub via either copy or -codec dvbsub does not seem to work + // It doesn't throw any errors but vlc on android will not render them + // They will need to be converted to an alternative format + // TODO: This is incorrectly assuming that dvdsub will be supported by the player + // The api will need to be expanded to accomodate this. + if (string.Equals(state.SubtitleStream.Codec, "DVBSUB", StringComparison.OrdinalIgnoreCase)) + { + codec = "dvdsub"; + } + + var args = " -codec:s:0 " + codec; + + args += " -disposition:s:0 default"; + + return args; + } + + public string GetProgressiveVideoFullCommandLine(EncodingJobInfo state, EncodingOptions encodingOptions, string outputPath, string defaultH264Preset) + { + // Get the output codec name + var videoCodec = GetVideoEncoder(state, encodingOptions); + + var format = string.Empty; + var keyFrame = string.Empty; + + if (string.Equals(Path.GetExtension(outputPath), ".mp4", StringComparison.OrdinalIgnoreCase) && + state.BaseRequest.Context == EncodingContext.Streaming) + { + // Comparison: https://github.com/jansmolders86/mediacenterjs/blob/master/lib/transcoding/desktop.js + format = " -f mp4 -movflags frag_keyframe+empty_moov"; + } + + var threads = GetNumberOfThreads(state, encodingOptions, string.Equals(videoCodec, "libvpx", StringComparison.OrdinalIgnoreCase)); + + var inputModifier = GetInputModifier(state, encodingOptions); + + return string.Format("{0} {1}{2} {3} {4} -map_metadata -1 -map_chapters -1 -threads {5} {6}{7}{8} -y \"{9}\"", + inputModifier, + GetInputArgument(state, encodingOptions), + keyFrame, + GetMapArgs(state), + GetProgressiveVideoArguments(state, encodingOptions, videoCodec, defaultH264Preset), + threads, + GetProgressiveVideoAudioArguments(state, encodingOptions), + GetSubtitleEmbedArguments(state), + format, + outputPath + ).Trim(); + } + + public string GetProgressiveVideoArguments(EncodingJobInfo state, EncodingOptions encodingOptions, string videoCodec, string defaultH264Preset) + { + var args = "-codec:v:0 " + videoCodec; + + if (state.EnableMpegtsM2TsMode) + { + args += " -mpegts_m2ts_mode 1"; + } + + if (string.Equals(videoCodec, "copy", StringComparison.OrdinalIgnoreCase)) + { + if (state.VideoStream != null && IsH264(state.VideoStream) && string.Equals(state.OutputContainer, "ts", StringComparison.OrdinalIgnoreCase) && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase)) + { + args += " -bsf:v h264_mp4toannexb"; + } + + if (state.RunTimeTicks.HasValue && state.BaseRequest.CopyTimestamps) + { + args += " -copyts -avoid_negative_ts disabled -start_at_zero"; + } + + if (!state.RunTimeTicks.HasValue) + { + args += " -flags -global_header -fflags +genpts"; + } + + return args; + } + + var keyFrameArg = string.Format(" -force_key_frames \"expr:gte(t,n_forced*{0})\"", + 5.ToString(_usCulture)); + + args += keyFrameArg; + + var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.BaseRequest.SubtitleMethod == SubtitleDeliveryMethod.Encode; + + var hasCopyTs = false; + // Add resolution params, if specified + if (!hasGraphicalSubs) + { + var outputSizeParam = GetOutputSizeParam(state, videoCodec); + args += outputSizeParam; + hasCopyTs = outputSizeParam.IndexOf("copyts", StringComparison.OrdinalIgnoreCase) != -1; + } + + if (state.RunTimeTicks.HasValue && state.BaseRequest.CopyTimestamps) + { + if (!hasCopyTs) + { + args += " -copyts"; + } + args += " -avoid_negative_ts disabled -start_at_zero"; + } + + var qualityParam = GetVideoQualityParam(state, videoCodec, encodingOptions, defaultH264Preset); + + if (!string.IsNullOrEmpty(qualityParam)) + { + args += " " + qualityParam.Trim(); + } + + // This is for internal graphical subs + if (hasGraphicalSubs) + { + args += GetGraphicalSubtitleParam(state, videoCodec); + } + + if (!state.RunTimeTicks.HasValue) + { + args += " -flags -global_header"; + } + + return args; + } + + public string GetProgressiveVideoAudioArguments(EncodingJobInfo state, EncodingOptions encodingOptions) + { + // If the video doesn't have an audio stream, return a default. + if (state.AudioStream == null && state.VideoStream != null) + { + return string.Empty; + } + + // Get the output codec name + var codec = GetAudioEncoder(state); + + var args = "-codec:a:0 " + codec; + + if (string.Equals(codec, "copy", StringComparison.OrdinalIgnoreCase)) + { + return args; + } + + // Add the number of audio channels + var channels = state.OutputAudioChannels; + + if (channels.HasValue) + { + args += " -ac " + channels.Value; + } + + var bitrate = state.OutputAudioBitrate; + + if (bitrate.HasValue) + { + args += " -ab " + bitrate.Value.ToString(_usCulture); + } + + args += " " + GetAudioFilterParam(state, encodingOptions, false); + + return args; + } } } |