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Capturing frames from a webcam


I am trying to capture frames from a webcam. I am using the vfw library with the capture macros. However, for the moment I only managed to playback the webcam in a window. I want to intercept the frames *before* they are displayed, for further processing.

The macro capGrabFrameNoStop(hWnd) seems to be appropriate.
But the problem is that it only displays the actual frame on the capture window. I want to intercept this frame before it is displayed.
The point is not to actually see what the camera sees but process it.

Thanx for the help



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