Howto capture video while running webcam using directx in C#

See more:

DirectX

C#3.5

video

capture

I have DirectX C# dll. I need to capture video while video running. when i capture video while running, it just slow in the windows form(get slow moving). how to stop picture box video slow moving. however video save without any problem.

here is the sample code i used.

What I have tried:

Filters _Filters ;
Capture capture;
SaveFileDialog saveAvi = null;

private void startcammera()
{
capture = null;
capture = new Capture(_Filters.VideoInputDevices[comboBox1.SelectedIndex], _Filters.AudioInputDevices[comboBox2.SelectedIndex]);

capture.VideoCompressor = _Filters.VideoCompressors[comboBox1.SelectedIndex];
capture.AudioCompressor = _Filters.AudioCompressors[comboBox2.SelectedIndex];

capture.FrameRate = 29.997;
capture.FrameSize = new Size(640, 480);
capture.AudioSamplingRate = 44100;
capture.AudioSampleSize = 16;
capture.AudioChannels = 2;

capture.Filename = saveAvi.FileName;
capture.PreviewWindow = this.pictureBox1;
}

private void CaptureStart()
{
capture.Start();
}