I have seen reports about the same problem from other people (here
) with different cards and different motherboards, so it's not a 9400 and/or m2n68-vm issue.
h264 works fine (I haven't tested vc1), seems to be with mpeg2 only.
P.S if you use standard decoding and vdpau rendering this will get rid of the artifacts and allow you to use the vdpau de-interlacers with OZ T
Thanks, I've played around with this but have yet to find a decoder-vdpau renderer-deinterlacer combination for HD content that my setup can cope with without stuttering.