https://bugs.freedesktop.org/show_bug.cgi?id=39308
--- Comment #5 from Andy Furniss lists@andyfurniss.entadsl.com --- (In reply to comment #4)
I don't have full access to my old machine with the rv350 anymore (I gave it to my father), but I'll try to test vdpau on it. If I don't answer in a month, feel free to close this bug (assuming it works for you).
mplayer -vo vdpau with software decode is working for me on rv350.
Decode with -vc ffmpeg12vdpau is still not working, though it did improve a bit recently see -
https://bugs.freedesktop.org/show_bug.cgi?id=39309