Capture stills from avi on Windows -

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I have to capture pictures from AV files I also need to know the AV file duration I platform is Windows, Language C + + Is (with QT library). I do not know more about DirectShow or QT Phonon and I do not have time to learn any of them. So, I'm looking for solutions that are ready, maybe there is some open source project where I can get some source for inspiration? Or maybe there is some free Dell who can do the job?

Windows C ++ sources are


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