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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 System.Threading.Tasks;
using MediaBrowser.Model.Diagnostics;
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, IProcessFactory processFactory) : base(mediaEncoder, logger, configurationManager, fileSystem, isoManager, libraryManager, sessionManager, subtitleEncoder, mediaSourceManager, processFactory)
{
}
protected override async Task<string> GetCommandLineArguments(EncodingJob state)
{
// Get the output codec name
var encodingOptions = GetEncodingOptions();
var videoCodec = EncodingHelper.GetVideoEncoder(state, encodingOptions);
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 = EncodingHelper.GetNumberOfThreads(state, encodingOptions, string.Equals(videoCodec, "libvpx", StringComparison.OrdinalIgnoreCase));
var inputModifier = EncodingHelper.GetInputModifier(state, encodingOptions);
var videoArguments = await GetVideoArguments(state, videoCodec).ConfigureAwait(false);
return string.Format("{0} {1}{2} {3} {4} -map_metadata -1 -threads {5} {6}{7} -y \"{8}\"",
inputModifier,
EncodingHelper.GetInputArgument(state, encodingOptions),
keyFrame,
EncodingHelper.GetMapArgs(state),
videoArguments,
threads,
EncodingHelper.GetProgressiveVideoAudioArguments(state, encodingOptions),
format,
state.OutputFilePath
).Trim();
}
/// <summary>
/// Gets video arguments to pass to ffmpeg
/// </summary>
/// <param name="state">The state.</param>
/// <param name="videoCodec">The video codec.</param>
/// <returns>System.String.</returns>
private async Task<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 && EncodingHelper.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 += EncodingHelper.GetOutputSizeParam(state, videoCodec);
}
var qualityParam = EncodingHelper.GetVideoQualityParam(state, videoCodec, GetEncodingOptions(), "superfast");
if (!string.IsNullOrEmpty(qualityParam))
{
args += " " + qualityParam.Trim();
}
// This is for internal graphical subs
if (hasGraphicalSubs)
{
args += EncodingHelper.GetGraphicalSubtitleParam(state, videoCodec);
}
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; }
}
}
}
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