Maybe someone else has a better free program, but a quick search turned up this one:
http://forums.afterdawn.com/thread_view.cfm/552897 I tested it out following the instructions in the 1st two post of that forum. It worked, but for some reason the end result looked like it altered the aspect ratio to wide screen. Sorry I couldn't be of more assistance. Great vids so far. He is one lucky dude!