How to attach a sample grabber to the playcap sdk sample

Posted by Mr Bell on Stack Overflow See other posts from Stack Overflow or by Mr Bell
Published on 2010-06-10T21:49:19Z Indexed on 2010/06/10 21:52 UTC
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c++

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directshow

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webcam

I want to get access to a webcam's frame image data so I can composite it with some other data. The playcap sample in the windows sdk directshow folder can show you a window streaming the webcam, but doesn't demonstrate access to the bytes. Someone mentioned that I could use a samplegrabber filter attached to a null rendered to gain access to the frame data. Unfortunately I haven't the first clue how to do this.

How can I modify the playcap sample to attach a sample grabber and access the frame bytes?

visual studio 2008 c++

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