The VideoLAN Forums

The exact same thing happened to me. Snow leopard has some cool features, but having a bunch of programs that worked perfectly before suddenly turn to crap is annoying.

I'm having the same problem when my TV is hooked up to my MacBook. If I put the video in fullscreen on the TV the screen on my MacBook goes black except for the dock. Video on the TV is very choppy, but plays fine if I just use the MacBook's screen. I didn't have any of these issues until I updated ...