👁 Image
FFmpeg4Sharp 7.0.1

FFmpeg4Sharp

A FFmpeg.AutoGen.Abstractions Warpper Library.

👁 NuGet version (FFmpeg4Sharp)
👁 NuGet downloads (FFmpeg4Sharp)
👁 Build status

This is NOT a ffmpeg command-line library.
dev branch is under construction.
FFmpeg API are unstable, please use ffmpeg library version > 5

Usage

Manually download the *.dll files that comply with the license from ffmpeg.org.

NuGet\Install-Package FFmpeg4Sharp

using FFmpeg.AutoGen.Abstractions;
using FFmpegSharp;

Mux and encode

/// Create a video file
var fps = 29.97d;
var width = 800;
var heith = 600;
var output = "path-to-your-output-file.mp4";
using (var muxer = MediaMuxer.Create(output))
{
 using (var encoder = MediaEncoder.CreateVideoEncoder(muxer.Format, width, heith, fps, otherSettings: _ => _.ThreadCount = 10))
 {
 var stream = muxer.AddStream(encoder);
 muxer.WriteHeader();
 using (var vFrame = MediaFrame.CreateVideoFrame(width, heith, encoder.PixFmt))
 {
 for (var i = 0; i < 300; i++)
 {
 // Your code to fill AVFrame.data
 vFrame.Pts = i;
 foreach (var packet in encoder.EncodeFrame(vFrame))
 {
 packet.StreamIndex = stream.Index;
 muxer.WritePacket(packet, encoder.TimeBase);
 }
 }
 }
 muxer.FlushCodecs(new[] { encoder });
 muxer.WriteTrailer();
 }
}

Demux and decode

/// Video to BGR images
var input = "path-to-your-input-file.mp4";
var output = "path-to-your-output-dir";
using (var demuxer = MediaDemuxer.Open(input))
using (var convert = new PixelConverter())
{
 var decoders = demuxer.Select(_ => MediaDecoder.CreateDecoder(_.CodecparRef, _ => _.ThreadCount = 10)).ToList();
 foreach (var packet in demuxer.ReadPackets())
 {
 var decoder = decoders[packet.StreamIndex];
 if (decoder != null && decoder.CodecType == FFmpeg.AutoGen.Abstractions.AVMediaType.AVMEDIA_TYPE_VIDEO)
 {
 convert.SetOpts(decoder.Width, decoder.Height, FFmpeg.AutoGen.Abstractions.AVPixelFormat.AV_PIX_FMT_BGR24);
 foreach (var frame in decoder.DecodePacket(packet))
 {
 // frame is YUV AVFrame
 foreach (var bgrframe in convert.Convert(frame))
 {
 // use opencvsharp save to jpg
 //using (var mat = new Mat(bgrframe.Height, bgrframe.Width, MatType.CV_8UC3))
 //{
 // var srcLineSize = bgrframe.Linesize[0];
 // var dstLineSize = (int)mat.Step();
 // FFmpegUtil.CopyPlane((IntPtr)bgrframe.Ref.data[0], srcLineSize,
 // mat.Data, dstLineSize, Math.Min(srcLineSize, dstLineSize), mat.Height);
 // if (frame.PktDts >= 0)
 // mat.SaveImage(Path.Combine(output, $"{demuxer[packet.StreamIndex].ToTimeSpan(frame.PktDts).TotalMilliseconds}ms.jpg"));
 //}
 }
 }
 }
 }
 decoders.ForEach(_ => _?.Dispose());
}

More see

ROADMAP

• Easy api to cut/seek/mute audio clip.
• Easy api to cut/seek video clip.
• More example and test.
• Filter support.
• Data exchange with NAudio and SharpAVI.
• Subtitle support.