> mplayer -frames 1 -vo vdpau -vc ffh264vdpau MGS4_storyPV.mp4
I got the latest mplayer-svn29324 and did it,
but it doesn't play anything.
Please get the movie by wget and play it by mplayer.
But I found it worked fine:
$ mplayer -framedrop -vo vdpau -vc ffh264vdpau MGS4_storyPV.mp4
It shows "your system is too slow", but I can play the trailer smoothly.
The CPU usage is very low (3% for 1 core at Phenom2 X3 firstname.lastname@example.orgGHz),
and I think it doesn't skip movie frames.
If I don't use VDPAU, the trailer requires 60% CPU usage for 1 core.
Anyway I think NVIDIA's PowerMizer is buggy.
Check this post please.