Working audio/video is best left to C. This means that you probably want to look for some C video libraries with an XS interface.
Luckily, there's FFmpeg (available at a CPAN near you).
In fact, it even has an example of capturing a frame from a stream in the SYNOPSIS portion of the POD.

In reply to Re: Generate screenshot from a video file? by plobsing
in thread Generate screenshot from a video file? by Preben

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