Grabbing video samples in DirectShow

[Constantin]

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?

 

[TheKing]

Oh good a question that I would like to see the answer for.

I have a conference camera doing a video stream in to an ATI card and I would like to take still captures of it and save it to .jpg format with around 50kb files size.

I just got the 8.1 sDK installed and am doing this program in VB 6.0.

I would like to see how difficult this is.



T^he_Kiⁿg