diff --git a/FFMpegCore/FFMpeg/FFMpeg.cs b/FFMpegCore/FFMpeg/FFMpeg.cs
index 7aad74f..0f516e8 100644
--- a/FFMpegCore/FFMpeg/FFMpeg.cs
+++ b/FFMpegCore/FFMpeg/FFMpeg.cs
@@ -20,13 +20,14 @@ public static class FFMpeg
/// Output video file path
/// Seek position where the thumbnail should be taken.
/// Thumbnail size. If width or height equal 0, the other will be computed automatically.
+ /// Number of video stream in input file. Default it is 0.
/// Bitmap with the requested snapshot.
- public static bool Snapshot(IMediaAnalysis source, string output, Size? size = null, TimeSpan? captureTime = null)
+ public static bool Snapshot(IMediaAnalysis source, string output, Size? size = null, TimeSpan? captureTime = null, int videoStreamNumber = 0)
{
if (Path.GetExtension(output) != FileExtension.Png)
output = Path.GetFileNameWithoutExtension(output) + FileExtension.Png;
- var arguments = BuildSnapshotArguments(source, size, captureTime);
+ var arguments = BuildSnapshotArguments(source, size, captureTime, videoStreamNumber);
return arguments
.OutputToFile(output)
@@ -39,13 +40,14 @@ public static bool Snapshot(IMediaAnalysis source, string output, Size? size = n
/// Output video file path
/// Seek position where the thumbnail should be taken.
/// Thumbnail size. If width or height equal 0, the other will be computed automatically.
+ /// Number of video stream in input file. Default it is 0.
/// Bitmap with the requested snapshot.
- public static Task SnapshotAsync(IMediaAnalysis source, string output, Size? size = null, TimeSpan? captureTime = null)
+ public static Task SnapshotAsync(IMediaAnalysis source, string output, Size? size = null, TimeSpan? captureTime = null, int videoStreamNumber = 0)
{
if (Path.GetExtension(output) != FileExtension.Png)
output = Path.GetFileNameWithoutExtension(output) + FileExtension.Png;
- var arguments = BuildSnapshotArguments(source, size, captureTime);
+ var arguments = BuildSnapshotArguments(source, size, captureTime, videoStreamNumber);
return arguments
.OutputToFile(output)
@@ -57,10 +59,11 @@ public static Task SnapshotAsync(IMediaAnalysis source, string output, Siz
/// Source video file.
/// Seek position where the thumbnail should be taken.
/// Thumbnail size. If width or height equal 0, the other will be computed automatically.
+ /// Number of video stream in input file. Default it is 0.
/// Bitmap with the requested snapshot.
- public static Bitmap Snapshot(IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null)
+ public static Bitmap Snapshot(IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null, int videoStreamNumber = 0)
{
- var arguments = BuildSnapshotArguments(source, size, captureTime);
+ var arguments = BuildSnapshotArguments(source, size, captureTime, videoStreamNumber);
using var ms = new MemoryStream();
arguments
@@ -77,10 +80,11 @@ public static Bitmap Snapshot(IMediaAnalysis source, Size? size = null, TimeSpan
/// Source video file.
/// Seek position where the thumbnail should be taken.
/// Thumbnail size. If width or height equal 0, the other will be computed automatically.
+ /// Number of video stream in input file. Default it is 0.
/// Bitmap with the requested snapshot.
- public static async Task SnapshotAsync(IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null)
+ public static async Task SnapshotAsync(IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null, int videoStreamNumber = 0)
{
- var arguments = BuildSnapshotArguments(source, size, captureTime);
+ var arguments = BuildSnapshotArguments(source, size, captureTime, videoStreamNumber);
using var ms = new MemoryStream();
await arguments
@@ -92,13 +96,14 @@ await arguments
return new Bitmap(ms);
}
- private static FFMpegArguments BuildSnapshotArguments(IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null)
+ private static FFMpegArguments BuildSnapshotArguments(IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null, int videoStreamNumber = 0)
{
captureTime ??= TimeSpan.FromSeconds(source.Duration.TotalSeconds / 3);
size = PrepareSnapshotSize(source, size);
return FFMpegArguments
.FromSeekedFiles((source.Path, captureTime ?? TimeSpan.Zero))
+ .WithVideoStream(videoStreamNumber)
.WithVideoCodec(VideoCodec.Png)
.WithFrameOutputCount(1)
.Resize(size);