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Add "BuildGifSnapshotArguments" method

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This commit is contained in:
Rafael Carvalho 2023-03-07 16:31:45 +13:00
parent 19c177a248
commit d14ef2268f
1 changed files with 25 additions and 0 deletions
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25
FFMpegCore/FFMpeg/SnapshotArgumentBuilder.cs
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@ -31,6 +31,31 @@ public static (FFMpegArguments, Action<FFMpegArgumentOptions> outputOptions) Bui
.Resize(size));
}
public static (FFMpegArguments, Action<FFMpegArgumentOptions> outputOptions) BuildGifSnapshotArguments(
string input,
IMediaAnalysis source,
Size? size = null,
TimeSpan? captureTime = null,
TimeSpan? duration = null,
int? streamIndex = null,
int fps = 12)
{
var defaultGifOutputSize = new Size(480, -1);
captureTime ??= TimeSpan.FromSeconds(source.Duration.TotalSeconds / 3);
size = PrepareSnapshotSize(source, size) ?? defaultGifOutputSize;
streamIndex ??= source.PrimaryVideoStream?.Index
?? source.VideoStreams.FirstOrDefault()?.Index
?? 0;
return (FFMpegArguments
.FromFileInput(input, false, options => options
.Seek(captureTime)
.WithDuration(duration)),
options => options
.WithGifPalettArgument((int)streamIndex, size, fps));
}
private static Size? PrepareSnapshotSize(IMediaAnalysis source, Size? wantedSize)
{
if (wantedSize == null || (wantedSize.Value.Height <= 0 && wantedSize.Value.Width <= 0) || source.PrimaryVideoStream == null)