h264 stuttering

view story

http://ubuntuforums.org – I am trying to play an HD H.264 file on my Mythbuntu box. But VLC stutters and on mplayer the audio-video goes out of sync. The file plays fine on my windows box. My cpu is underpowered for software decoding(Athlon 3200). So I was hoping to use hardware decoding. I believe my video card comes with a H.264 decoder on it(NVidia Geforece 7600 GS). But thus far I have not been able to get HD H.264 files to play smoothly. System specs: Ubuntu 10.04.4 Lucid NVidia Geforce 7600 GS AMD Athlon 64 Processor 3200+ Video Driver: Proprietary driver - NVIDIA accelerated graphics driver (version curre (Hardware)