Another note - I tried using Fraps unregistered to take some short clips in Single Player SA yesterday, and my game lagged like hell. When I went to get said clips, they length on each was correct, but all it was, were these weird colored fuzz lines sitting there for the amount of time the clip should have been. I think this may have been a result of my highly advanced lag, but I don't know if that was just a bad day in the game or if it was the fraps itself doing it.
Update: Just took a ton of clips while my game was NOT lagging whatsoever, and the same thing happened.