> > I'm no video expert, but I reckon you could do this with micros.
>
> Uh huh

Robert, you have my permission to confirm that I really am
no video expert. Although for a noddy I think I got reasonably
close for just a pencil sketch. As you point out, there are
some things best left to purpose-built chips (DACS, ADCs
etc) I wouldn't expect a micro to be able to do all that RGB
sampling), it just simply hasn't got the muscle. Fortunately
in these multimedia days, there are plenty of video ICs that
could do the donkey work

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.