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196 lines
No EOL
6.9 KiB
C#
196 lines
No EOL
6.9 KiB
C#
using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.MediaEncoding;
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using MediaBrowser.Controller.Session;
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using MediaBrowser.Model.Dlna;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Logging;
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using System;
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using System.IO;
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using System.Threading.Tasks;
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using MediaBrowser.Model.Diagnostics;
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namespace MediaBrowser.MediaEncoding.Encoder
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{
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public class VideoEncoder : BaseEncoder
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{
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public VideoEncoder(MediaEncoder mediaEncoder, ILogger logger, IServerConfigurationManager configurationManager, IFileSystem fileSystem, IIsoManager isoManager, ILibraryManager libraryManager, ISessionManager sessionManager, ISubtitleEncoder subtitleEncoder, IMediaSourceManager mediaSourceManager, IProcessFactory processFactory) : base(mediaEncoder, logger, configurationManager, fileSystem, isoManager, libraryManager, sessionManager, subtitleEncoder, mediaSourceManager, processFactory)
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{
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}
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protected override async Task<string> GetCommandLineArguments(EncodingJob state)
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{
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// Get the output codec name
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var videoCodec = EncodingJobFactory.GetVideoEncoder(MediaEncoder, state, GetEncodingOptions());
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var format = string.Empty;
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var keyFrame = string.Empty;
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if (string.Equals(Path.GetExtension(state.OutputFilePath), ".mp4", StringComparison.OrdinalIgnoreCase) &&
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state.Options.Context == EncodingContext.Streaming)
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{
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// Comparison: https://github.com/jansmolders86/mediacenterjs/blob/master/lib/transcoding/desktop.js
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format = " -f mp4 -movflags frag_keyframe+empty_moov";
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}
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var threads = GetNumberOfThreads(state, string.Equals(videoCodec, "libvpx", StringComparison.OrdinalIgnoreCase));
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var inputModifier = GetInputModifier(state);
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var videoArguments = await GetVideoArguments(state, videoCodec).ConfigureAwait(false);
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return string.Format("{0} {1}{2} {3} {4} -map_metadata -1 -threads {5} {6}{7} -y \"{8}\"",
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inputModifier,
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GetInputArgument(state),
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keyFrame,
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GetMapArgs(state),
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videoArguments,
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threads,
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GetAudioArguments(state),
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format,
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state.OutputFilePath
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).Trim();
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}
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/// <summary>
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/// Gets video arguments to pass to ffmpeg
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/// </summary>
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/// <param name="state">The state.</param>
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/// <param name="videoCodec">The video codec.</param>
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/// <returns>System.String.</returns>
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private async Task<string> GetVideoArguments(EncodingJob state, string videoCodec)
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{
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var args = "-codec:v:0 " + videoCodec;
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if (state.EnableMpegtsM2TsMode)
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{
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args += " -mpegts_m2ts_mode 1";
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}
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var isOutputMkv = string.Equals(state.Options.OutputContainer, "mkv", StringComparison.OrdinalIgnoreCase);
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if (state.RunTimeTicks.HasValue)
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{
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//args += " -copyts -avoid_negative_ts disabled -start_at_zero";
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}
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if (string.Equals(videoCodec, "copy", StringComparison.OrdinalIgnoreCase))
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{
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if (state.VideoStream != null && IsH264(state.VideoStream) && string.Equals(state.Options.OutputContainer, "ts", StringComparison.OrdinalIgnoreCase) && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
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{
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args += " -bsf:v h264_mp4toannexb";
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}
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return args;
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}
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var keyFrameArg = string.Format(" -force_key_frames \"expr:gte(t,n_forced*{0})\"",
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5.ToString(UsCulture));
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args += keyFrameArg;
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var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.Options.SubtitleMethod == SubtitleDeliveryMethod.Encode;
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// Add resolution params, if specified
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if (!hasGraphicalSubs)
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{
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args += await GetOutputSizeParam(state, videoCodec).ConfigureAwait(false);
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}
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var qualityParam = GetVideoQualityParam(state, videoCodec);
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if (!string.IsNullOrEmpty(qualityParam))
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{
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args += " " + qualityParam.Trim();
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}
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// This is for internal graphical subs
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if (hasGraphicalSubs)
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{
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args += await GetGraphicalSubtitleParam(state, videoCodec).ConfigureAwait(false);
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}
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return args;
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}
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/// <summary>
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/// Gets audio arguments to pass to ffmpeg
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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private string GetAudioArguments(EncodingJob state)
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{
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// If the video doesn't have an audio stream, return a default.
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if (state.AudioStream == null && state.VideoStream != null)
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{
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return string.Empty;
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}
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// Get the output codec name
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var codec = EncodingJobFactory.GetAudioEncoder(state);
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var args = "-codec:a:0 " + codec;
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if (string.Equals(codec, "copy", StringComparison.OrdinalIgnoreCase))
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{
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return args;
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}
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// Add the number of audio channels
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var channels = state.OutputAudioChannels;
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if (channels.HasValue)
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{
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args += " -ac " + channels.Value;
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}
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var bitrate = state.OutputAudioBitrate;
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if (bitrate.HasValue)
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{
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args += " -ab " + bitrate.Value.ToString(UsCulture);
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}
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args += " " + GetAudioFilterParam(state, false);
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return args;
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}
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protected override string GetOutputFileExtension(EncodingJob state)
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{
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var ext = base.GetOutputFileExtension(state);
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if (!string.IsNullOrEmpty(ext))
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{
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return ext;
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}
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var videoCodec = state.Options.VideoCodec;
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if (string.Equals(videoCodec, "h264", StringComparison.OrdinalIgnoreCase))
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{
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return ".ts";
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}
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if (string.Equals(videoCodec, "theora", StringComparison.OrdinalIgnoreCase))
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{
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return ".ogv";
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}
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if (string.Equals(videoCodec, "vpx", StringComparison.OrdinalIgnoreCase))
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{
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return ".webm";
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}
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if (string.Equals(videoCodec, "wmv", StringComparison.OrdinalIgnoreCase))
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{
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return ".asf";
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}
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return null;
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}
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protected override bool IsVideoEncoder
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{
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get { return true; }
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}
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}
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} |