/
VideoFileInfoReader.cs
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/
VideoFileInfoReader.cs
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using FFMpegCore;
using NLog;
using NzbDrone.Common.Disk;
using NzbDrone.Common.Extensions;
namespace NzbDrone.Core.MediaFiles.MediaInfo
{
public interface IVideoFileInfoReader
{
MediaInfoModel GetMediaInfo(string filename);
TimeSpan? GetRunTime(string filename);
}
public class VideoFileInfoReader : IVideoFileInfoReader
{
private readonly IDiskProvider _diskProvider;
private readonly Logger _logger;
private readonly List<FFProbePixelFormat> _pixelFormats;
public const int MINIMUM_MEDIA_INFO_SCHEMA_REVISION = 8;
public const int CURRENT_MEDIA_INFO_SCHEMA_REVISION = 10;
private static readonly string[] ValidHdrColourPrimaries = { "bt2020" };
private static readonly string[] HlgTransferFunctions = { "bt2020-10", "arib-std-b67" };
private static readonly string[] PqTransferFunctions = { "smpte2084" };
private static readonly string[] ValidHdrTransferFunctions = HlgTransferFunctions.Concat(PqTransferFunctions).ToArray();
public VideoFileInfoReader(IDiskProvider diskProvider, Logger logger)
{
_diskProvider = diskProvider;
_logger = logger;
// We bundle ffprobe for all platforms
GlobalFFOptions.Configure(options => options.BinaryFolder = AppDomain.CurrentDomain.BaseDirectory);
try
{
_pixelFormats = FFProbe.GetPixelFormats();
}
catch (Exception e)
{
_logger.Error(e, "Failed to get supported pixel formats from ffprobe");
_pixelFormats = new List<FFProbePixelFormat>();
}
}
public MediaInfoModel GetMediaInfo(string filename)
{
if (!_diskProvider.FileExists(filename))
{
throw new FileNotFoundException("Media file does not exist: " + filename);
}
if (MediaFileExtensions.DiskExtensions.Contains(Path.GetExtension(filename)))
{
return null;
}
// TODO: Cache media info by path, mtime and length so we don't need to read files multiple times
try
{
_logger.Debug("Getting media info from {0}", filename);
var ffprobeOutput = FFProbe.GetStreamJson(filename, ffOptions: new FFOptions { ExtraArguments = "-probesize 50000000" });
var analysis = FFProbe.AnalyseStreamJson(ffprobeOutput);
var primaryVideoStream = GetPrimaryVideoStream(analysis);
if (analysis.PrimaryAudioStream?.ChannelLayout.IsNullOrWhiteSpace() ?? true)
{
ffprobeOutput = FFProbe.GetStreamJson(filename, ffOptions: new FFOptions { ExtraArguments = "-probesize 150000000 -analyzeduration 150000000" });
analysis = FFProbe.AnalyseStreamJson(ffprobeOutput);
}
var mediaInfoModel = new MediaInfoModel();
mediaInfoModel.ContainerFormat = analysis.Format.FormatName;
mediaInfoModel.VideoFormat = primaryVideoStream?.CodecName;
mediaInfoModel.VideoCodecID = primaryVideoStream?.CodecTagString;
mediaInfoModel.VideoProfile = primaryVideoStream?.Profile;
mediaInfoModel.VideoBitrate = primaryVideoStream?.BitRate ?? 0;
mediaInfoModel.VideoBitDepth = GetPixelFormat(primaryVideoStream?.PixelFormat)?.Components.Min(x => x.BitDepth) ?? 8;
mediaInfoModel.VideoColourPrimaries = primaryVideoStream?.ColorPrimaries;
mediaInfoModel.VideoTransferCharacteristics = primaryVideoStream?.ColorTransfer;
mediaInfoModel.DoviConfigurationRecord = primaryVideoStream?.SideDataList?.Find(x => x.GetType().Name == nameof(DoviConfigurationRecordSideData)) as DoviConfigurationRecordSideData;
mediaInfoModel.Height = primaryVideoStream?.Height ?? 0;
mediaInfoModel.Width = primaryVideoStream?.Width ?? 0;
mediaInfoModel.AudioFormat = analysis.PrimaryAudioStream?.CodecName;
mediaInfoModel.AudioCodecID = analysis.PrimaryAudioStream?.CodecTagString;
mediaInfoModel.AudioProfile = analysis.PrimaryAudioStream?.Profile;
mediaInfoModel.AudioBitrate = analysis.PrimaryAudioStream?.BitRate ?? 0;
mediaInfoModel.RunTime = GetBestRuntime(analysis.PrimaryAudioStream?.Duration, primaryVideoStream?.Duration, analysis.Format.Duration);
mediaInfoModel.AudioStreamCount = analysis.AudioStreams.Count;
mediaInfoModel.AudioChannels = analysis.PrimaryAudioStream?.Channels ?? 0;
mediaInfoModel.AudioChannelPositions = analysis.PrimaryAudioStream?.ChannelLayout;
mediaInfoModel.VideoFps = primaryVideoStream?.FrameRate ?? 0;
mediaInfoModel.AudioLanguages = analysis.AudioStreams?.Select(x => x.Language)
.Where(l => l.IsNotNullOrWhiteSpace())
.ToList();
mediaInfoModel.Subtitles = analysis.SubtitleStreams?.Select(x => x.Language)
.Where(l => l.IsNotNullOrWhiteSpace())
.ToList();
mediaInfoModel.ScanType = "Progressive";
mediaInfoModel.RawStreamData = ffprobeOutput;
mediaInfoModel.SchemaRevision = CURRENT_MEDIA_INFO_SCHEMA_REVISION;
if (analysis.Format.Tags?.TryGetValue("title", out var title) ?? false)
{
mediaInfoModel.Title = title;
}
FFProbeFrames frames = null;
// if it looks like PQ10 or similar HDR, do a frame analysis to figure out which type it is
if (PqTransferFunctions.Contains(mediaInfoModel.VideoTransferCharacteristics))
{
var frameOutput = FFProbe.GetFrameJson(filename, ffOptions: new () { ExtraArguments = $"-read_intervals \"%+#1\" -select_streams v:{primaryVideoStream?.Index ?? 0}" });
mediaInfoModel.RawFrameData = frameOutput;
frames = FFProbe.AnalyseFrameJson(frameOutput);
}
var streamSideData = primaryVideoStream?.SideDataList ?? new ();
var framesSideData = frames?.Frames?.Count > 0 ? frames?.Frames[0]?.SideDataList ?? new () : new ();
var sideData = streamSideData.Concat(framesSideData).ToList();
mediaInfoModel.VideoHdrFormat = GetHdrFormat(mediaInfoModel.VideoBitDepth, mediaInfoModel.VideoColourPrimaries, mediaInfoModel.VideoTransferCharacteristics, sideData);
return mediaInfoModel;
}
catch (Exception ex)
{
_logger.Error(ex, "Unable to parse media info from file: {0}", filename);
}
return null;
}
public TimeSpan? GetRunTime(string filename)
{
var info = GetMediaInfo(filename);
return info?.RunTime;
}
private static TimeSpan GetBestRuntime(TimeSpan? audio, TimeSpan? video, TimeSpan general)
{
if (!video.HasValue || video.Value.TotalMilliseconds == 0)
{
if (!audio.HasValue || audio.Value.TotalMilliseconds == 0)
{
return general;
}
return audio.Value;
}
return video.Value;
}
private VideoStream GetPrimaryVideoStream(IMediaAnalysis mediaAnalysis)
{
if (mediaAnalysis.VideoStreams.Count <= 1)
{
return mediaAnalysis.PrimaryVideoStream;
}
// motion image codec streams are often in front of the main video stream
var codecFilter = new[] { "mjpeg", "png" };
return mediaAnalysis.VideoStreams.FirstOrDefault(s => !codecFilter.Contains(s.CodecName)) ?? mediaAnalysis.PrimaryVideoStream;
}
private FFProbePixelFormat GetPixelFormat(string format)
{
return _pixelFormats.Find(x => x.Name == format);
}
public static HdrFormat GetHdrFormat(int bitDepth, string colorPrimaries, string transferFunction, List<SideData> sideData)
{
if (bitDepth < 10)
{
return HdrFormat.None;
}
if (TryGetSideData<DoviConfigurationRecordSideData>(sideData, out var dovi))
{
var hasHdr10Plus = TryGetSideData<HdrDynamicMetadataSpmte2094>(sideData, out _);
return dovi.DvBlSignalCompatibilityId switch
{
1 => hasHdr10Plus ? HdrFormat.DolbyVisionHdr10Plus : HdrFormat.DolbyVisionHdr10,
2 => HdrFormat.DolbyVisionSdr,
4 => HdrFormat.DolbyVisionHlg,
6 => hasHdr10Plus ? HdrFormat.DolbyVisionHdr10Plus : HdrFormat.DolbyVisionHdr10,
_ => HdrFormat.DolbyVision
};
}
if (!ValidHdrColourPrimaries.Contains(colorPrimaries) || !ValidHdrTransferFunctions.Contains(transferFunction))
{
return HdrFormat.None;
}
if (HlgTransferFunctions.Contains(transferFunction))
{
return HdrFormat.Hlg10;
}
if (PqTransferFunctions.Contains(transferFunction))
{
if (TryGetSideData<HdrDynamicMetadataSpmte2094>(sideData, out _))
{
return HdrFormat.Hdr10Plus;
}
if (TryGetSideData<MasteringDisplayMetadata>(sideData, out _) ||
TryGetSideData<ContentLightLevelMetadata>(sideData, out _))
{
return HdrFormat.Hdr10;
}
return HdrFormat.Pq10;
}
return HdrFormat.None;
}
private static bool TryGetSideData<T>(List<SideData> list, out T result)
where T : SideData
{
result = (T)list?.FirstOrDefault(x => x.GetType().Name == typeof(T).Name);
return result != null;
}
}
}