private void StartFfmpegProcess(VideoRecordingOptions videoRecordingOptions)
{
var inputArgs = $"-thread_queue_size 512 -use_wallclock_as_timestamps 1 -f rawvideo -pix_fmt rgb32 -video_size {videoRecordingOptions.Width}x{videoRecordingOptions.Height} -i {pipePrefix}{pipeName}"; //$"-framerate {videoRecordingOptions.FrameRate} -f rawvideo -pix_fmt rgb32 -video_size {videoRecordingOptions.Width}x{videoRecordingOptions.Height} -i {pipePrefix}{pipeName}";
var outputArgs = $"-vcodec libx264 -crf 15 -pix_fmt yuv420p -preset ultrafast -r {videoRecordingOptions.FrameRate} -y {Path.Combine(videoRecordingOptions.Path, videoRecordingOptions.FileName)}"; //$"-vcodec libx264 -crf 17 -pix_fmt yuv420p -preset ultrafast -r {videoRecordingOptions.FrameRate} -y {Path.Combine(videoRecordingOptions.Path, videoRecordingOptions.FileName)}";
var ffmpegPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ffmpeg.exe");
_ffmpegProcess = new Process
{
StartInfo =
{
FileName = ffmpegPath,
Arguments = $"{inputArgs} {outputArgs}",
UseShellExecute = false,
CreateNoWindow = true,
RedirectStandardError = true,
RedirectStandardInput = true
},
EnableRaisingEvents = true
};
_ffmpegProcess.ErrorDataReceived += (s, e) => ProcessTheErrorData(s, e);
_ffmpegProcess.Start();
_ffmpegProcess.BeginErrorReadLine();
}
public MainWindow()
{
InitializeComponent();
_timer = new Timer((TimeSpan time) => {
TimerLbl.Content = time.ToString();
});
_videoRecordingOptions = new VideoRecordingOptions
{
FrameRate = 10,
Height = 900,
Width = 900,
X = 300,
Y = 300,
Path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "videos"),
FileName = "out.mp4"
};
}
public VideoWriter(VideoRecordingOptions videoRecordingOptions)
{
_videoBuffer = new byte[videoRecordingOptions.Width * videoRecordingOptions.Height * 4];
_ffmpegStream = new NamedPipeServerStream(pipeName, PipeDirection.Out, 1, PipeTransmissionMode.Byte, PipeOptions.Asynchronous, 0, _videoBuffer.Length);
StartFfmpegProcess(videoRecordingOptions);
}
public VideoRecording(VideoRecordingOptions videoRecordingOptions)
{
_frames = new BlockingCollection <Bitmap>();
_writer = new VideoWriter(videoRecordingOptions);
_videoRecordingOptions = videoRecordingOptions;
}
