[plt-scheme] Fluxus + video processing

Hi all,

I've almost built up the courage to attempt installing fluxus.  Before
doing so, I have a question about video processing.  I'm primarily
interested in turning video streams into audio, via extracting, e.g.
movement.  Am I correct in thinking that fluxus has no libraries for
doing so at the moment?  Does anyone know a package (pure data?) that
does support this?  I'll probably still play around with fluxus, but
I'd like to get a quick idea of what is feasible.

Thanks,
Noel