using MediaBrowser.Controller.Configuration; using MediaBrowser.Controller.Library; using MediaBrowser.Controller.MediaEncoding; using MediaBrowser.Controller.Session; using MediaBrowser.Model.Dlna; using MediaBrowser.Model.IO; using MediaBrowser.Model.Logging; using System; using System.IO; using CommonIO; namespace MediaBrowser.MediaEncoding.Encoder { public class VideoEncoder : BaseEncoder { public VideoEncoder(MediaEncoder mediaEncoder, ILogger logger, IServerConfigurationManager configurationManager, IFileSystem fileSystem, IIsoManager isoManager, ILibraryManager libraryManager, ISessionManager sessionManager, ISubtitleEncoder subtitleEncoder, IMediaSourceManager mediaSourceManager) : base(mediaEncoder, logger, configurationManager, fileSystem, isoManager, libraryManager, sessionManager, subtitleEncoder, mediaSourceManager) { } protected override string GetCommandLineArguments(EncodingJob state) { // Get the output codec name var videoCodec = EncodingJobFactory.GetVideoEncoder(state, GetEncodingOptions()); var format = string.Empty; var keyFrame = string.Empty; if (string.Equals(Path.GetExtension(state.OutputFilePath), ".mp4", StringComparison.OrdinalIgnoreCase) && state.Options.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, string.Equals(videoCodec, "libvpx", StringComparison.OrdinalIgnoreCase)); var inputModifier = GetInputModifier(state); return string.Format("{0} {1}{2} {3} {4} -map_metadata -1 -threads {5} {6}{7} -y \"{8}\"", inputModifier, GetInputArgument(state), keyFrame, GetMapArgs(state), GetVideoArguments(state, videoCodec), threads, GetAudioArguments(state), format, state.OutputFilePath ).Trim(); } /// /// Gets video arguments to pass to ffmpeg /// /// The state. /// The video codec. /// System.String. private string GetVideoArguments(EncodingJob state, string videoCodec) { var args = "-codec:v:0 " + videoCodec; if (state.EnableMpegtsM2TsMode) { args += " -mpegts_m2ts_mode 1"; } var isOutputMkv = string.Equals(state.Options.OutputContainer, "mkv", StringComparison.OrdinalIgnoreCase); if (state.RunTimeTicks.HasValue) { //args += " -copyts -avoid_negative_ts disabled -start_at_zero"; } if (string.Equals(videoCodec, "copy", StringComparison.OrdinalIgnoreCase)) { if (state.VideoStream != null && IsH264(state.VideoStream) && string.Equals(state.Options.OutputContainer, "ts", StringComparison.OrdinalIgnoreCase) && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase)) { args += " -bsf:v h264_mp4toannexb"; } 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.Options.SubtitleMethod == SubtitleDeliveryMethod.Encode; // Add resolution params, if specified if (!hasGraphicalSubs) { args += GetOutputSizeParam(state, videoCodec); } var qualityParam = GetVideoQualityParam(state, videoCodec); if (!string.IsNullOrEmpty(qualityParam)) { args += " " + qualityParam.Trim(); } // This is for internal graphical subs if (hasGraphicalSubs) { args += GetGraphicalSubtitleParam(state, videoCodec); } return args; } /// /// Gets audio arguments to pass to ffmpeg /// /// The state. /// System.String. private string GetAudioArguments(EncodingJob state) { // 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 = EncodingJobFactory.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, false); return args; } protected override string GetOutputFileExtension(EncodingJob state) { var ext = base.GetOutputFileExtension(state); if (!string.IsNullOrEmpty(ext)) { return ext; } var videoCodec = state.Options.VideoCodec; if (string.Equals(videoCodec, "h264", StringComparison.OrdinalIgnoreCase)) { return ".ts"; } if (string.Equals(videoCodec, "theora", StringComparison.OrdinalIgnoreCase)) { return ".ogv"; } if (string.Equals(videoCodec, "vpx", StringComparison.OrdinalIgnoreCase)) { return ".webm"; } if (string.Equals(videoCodec, "wmv", StringComparison.OrdinalIgnoreCase)) { return ".asf"; } return null; } protected override bool IsVideoEncoder { get { return true; } } } }