I've installed the latest kernel of Fedora Core 3 and have used apt to install mplayer.
Mplayer works fine when playing back a divx avi, but if I use gmplayer to do it I get the following error:
vo_xvmc: X-Video extension 2.2
vo_xvmc: No X-Video MotionCompensation Extension on :0.0
Error opening/initializing the selected video_out (-vo) device.
Does anybody know how to address this?