private string GetFFMpegArguments(EncoderSettings settings)
{
String args = "";
args += " -y ";
args += " -f rawvideo ";
args += " -pixel_format bgr24 ";
args += String.Format(" -video_size {0}x{1} ", width, height);
args += " -framerate " + settings.framerate;
args += " -i - ";
args += String.Format(" -vb {0}K ", settings.videoRate);
args += " -c:v " + settings.codec;
args += " -tune zerolatency ";
args += String.Format(" -video_size {0}x{1} ", width, height);
args += " -f mpegts ";
args += " -bufsize 2M -g 300 -ps 4096 ";
args += " - ";
return args;
}
public void StartEncoding(EncoderSettings settings)
{
if (IsEncoding)
{
return;
}
lock (this)
{
started = true;
}
totalBytes = 0;
frameBuffers.Clear();
// Create new buffer pools in case threads are still doing things
frameBuffers = new BufferPool();
encodedBuffers = new BufferPool();
process = new Process();
process.StartInfo.Arguments = GetFFMpegArguments(settings);
process.StartInfo.FileName = ffmpeg.Path;
process.StartInfo.RedirectStandardInput = true;
process.StartInfo.RedirectStandardError = true;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.UseShellExecute = false;
process.StartInfo.CreateNoWindow = true;
process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
process.Start();
readThread = new VideoEncoderReadThread(this, process, encodedBuffers);
writeThread = new VideoEncoderWriteThread(this, process, frameBuffers);
errorThread = new VideoEncoderErrorThread(this, process);
errorThread.Start();
readThread.Start();
writeThread.Start();
}