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Merge pull request #416 from phillipfisher/main

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Add chapters to FFProbe
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Malte Rosenbjerg 2023-10-05 11:56:58 +02:00 committed by GitHub
commit 20a5b156e9
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6 changed files with 48 additions and 2 deletions
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1
FFMpegCore.Test/FFProbeTests.cs
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@ -105,6 +105,7 @@ public void Probe_Success()
{
var info = FFProbe.Analyse(TestResources.Mp4Video);
Assert.AreEqual(3, info.Duration.Seconds);
Assert.AreEqual(0, info.Chapters.Count);
Assert.AreEqual("5.1", info.PrimaryAudioStream!.ChannelLayout);
Assert.AreEqual(6, info.PrimaryAudioStream.Channels);

2
FFMpegCore/FFMpeg/Builders/MetaData/ChapterData.cs
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@ -6,6 +6,8 @@ public class ChapterData
public TimeSpan Start { get; private set; }
public TimeSpan End { get; private set; }
public TimeSpan Duration => End - Start;
public ChapterData(string title, TimeSpan start, TimeSpan end)
{
Title = title;

2
FFMpegCore/FFProbe/FFProbe.cs
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@ -213,7 +213,7 @@ private static void ThrowIfExitCodeNotZero(IProcessResult result)
}
private static ProcessArguments PrepareStreamAnalysisInstance(string filePath, FFOptions ffOptions)
=> PrepareInstance($"-loglevel error -print_format json -show_format -sexagesimal -show_streams \"{filePath}\"", ffOptions);
=> PrepareInstance($"-loglevel error -print_format json -show_format -sexagesimal -show_streams -show_chapters \"{filePath}\"", ffOptions);
private static ProcessArguments PrepareFrameAnalysisInstance(string filePath, FFOptions ffOptions)
=> PrepareInstance($"-loglevel error -print_format json -show_frames -v quiet -sexagesimal \"{filePath}\"", ffOptions);
private static ProcessArguments PreparePacketAnalysisInstance(string filePath, FFOptions ffOptions)

27
FFMpegCore/FFProbe/FFProbeAnalysis.cs
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@ -11,6 +11,9 @@ public class FFProbeAnalysis
[JsonPropertyName("format")]
public Format Format { get; set; } = null!;
[JsonPropertyName("chapters")]
public List<Chapter> Chapters { get; set; } = null!;
[JsonIgnore]
public IReadOnlyList<string> ErrorData { get; set; } = new List<string>();
}
@ -129,6 +132,30 @@ public class Format : ITagsContainer
public Dictionary<string, string>? Tags { get; set; }
}
public class Chapter : ITagsContainer
{
[JsonPropertyName("id")]
public int Id { get; set; }
[JsonPropertyName("time_base")]
public string TimeBase { get; set; } = null!;
[JsonPropertyName("start")]
public int Start { get; set; }
[JsonPropertyName("start_time")]
public string StartTime { get; set; } = null!;
[JsonPropertyName("end")]
public int End { get; set; }
[JsonPropertyName("end_time")]
public string EndTime { get; set; } = null!;
[JsonPropertyName("tags")]
public Dictionary<string, string>? Tags { get; set; }
}
public interface IDispositionContainer
{
Dictionary<string, int> Disposition { get; set; }

5
FFMpegCore/FFProbe/IMediaAnalysis.cs
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@ -1,9 +1,12 @@
namespace FFMpegCore
using FFMpegCore.Builders.MetaData;
namespace FFMpegCore
{
public interface IMediaAnalysis
{
TimeSpan Duration { get; }
MediaFormat Format { get; }
List<ChapterData> Chapters { get; }
AudioStream? PrimaryAudioStream { get; }
VideoStream? PrimaryVideoStream { get; }
SubtitleStream? PrimarySubtitleStream { get; }

13
FFMpegCore/FFProbe/MediaAnalysis.cs
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@ -1,4 +1,5 @@
using System.Text.RegularExpressions;
using FFMpegCore.Builders.MetaData;
namespace FFMpegCore
{
@ -7,6 +8,7 @@ internal class MediaAnalysis : IMediaAnalysis
internal MediaAnalysis(FFProbeAnalysis analysis)
{
Format = ParseFormat(analysis.Format);
Chapters = analysis.Chapters.Select(c => ParseChapter(c)).ToList();
VideoStreams = analysis.Streams.Where(stream => stream.CodecType == "video").Select(ParseVideoStream).ToList();
AudioStreams = analysis.Streams.Where(stream => stream.CodecType == "audio").Select(ParseAudioStream).ToList();
SubtitleStreams = analysis.Streams.Where(stream => stream.CodecType == "subtitle").Select(ParseSubtitleStream).ToList();
@ -28,6 +30,15 @@ private MediaFormat ParseFormat(Format analysisFormat)
};
}
private ChapterData ParseChapter(Chapter analysisChapter)
{
var title = analysisChapter.Tags.FirstOrDefault(t => t.Key == "title").Value;
var start = MediaAnalysisUtils.ParseDuration(analysisChapter.StartTime);
var end = MediaAnalysisUtils.ParseDuration(analysisChapter.EndTime);
return new ChapterData(title, start, end);
}
public TimeSpan Duration => new[]
{
Format.Duration,
@ -37,6 +48,8 @@ private MediaFormat ParseFormat(Format analysisFormat)
public MediaFormat Format { get; }
public List<ChapterData> Chapters { get; }
public AudioStream? PrimaryAudioStream => AudioStreams.OrderBy(stream => stream.Index).FirstOrDefault();
public VideoStream? PrimaryVideoStream => VideoStreams.OrderBy(stream => stream.Index).FirstOrDefault();
public SubtitleStream? PrimarySubtitleStream => SubtitleStreams.OrderBy(stream => stream.Index).FirstOrDefault();