Sorry I don't know my VC1 from a hole in the wall. I don't think the trouble is realted to VC1, because this one plays just fine with low cpu so I know vdpau is working:
TS file format detected.
VIDEO VC1(pid=4129) AUDIO A52(pid=4134) NO SUBS (yet)! PROGRAM N. 1
Searching for VC1 sequence header... found
VIDEO: VC-1 1920x1080, 23.976 fps, header len: 33
I will post more when I get home, but can you be more specific about the lack of VC1 support, why does this one play?