Yes .. old dvd/divx player that its out of order ... of course dont be disappointed if it havent VGA out ... in most cases on a little motherboard it have place with simple connector that its VGA out .. I cant tell you details because many of options are possible. I saw 4-5 "different" player with very,very similar MB ... Ok, sorry for my bad english, but I hope that I gave you some direction. bye!
youll see the one ive been working on for non interlaced but this is to tv
youll need
for interlaced rgb to vga an ad725 {analoge devices}
your RGB needs to be interlaced for this chip or it wont work
if this is the case pm me and ill send a board i already made using 724 or 725
for non interlaced a line doubler or scan doubler {this is lots harder to convert}
the old atari machines it is non interlaced signals
instead i used mc13077 convert to svideo
then plug into a tv capture card for the pc
you can record take snaps
and also stretch the screen to the right size