I am trying to grab individual frames from a video stream using the Sample Grabber filter. I can render the video to screen perfectly, but when I try to grab via the Sample Grabber filter, the BMP's I write out are not correct - almost as if the frame grabber is not in synch with the analog video signal, but when I test for synchronization with the analog video, the device insists that it is locked.
Is grabbing samples from a live stream as simple as setting up the Sample Grabber filter and registering a callback method for it, or is there something that I am missing?
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