FWIW, here are some results for me.
i get a lot of video jumps, and rather visible scan lines often.
in xbmc and xine. though xbmc seems to work much better.
this is on ubuntu 10.10
Code:
qvdpautest 0.5.1
Pentium(R) Dual-Core CPU E5300 @ 2.60GHz
NVIDIA GPU GeForce 9400 (C79) at PCI:3:0:0 (GPU-0)
VDPAU API version : 1
VDPAU implementation : NVIDIA VDPAU Driver Shared Library 260.19.06 Mon Sep 13 07:05:35 PDT 2010
SURFACE GET BITS: 1104.61 M/s
SURFACE PUT BITS: 1097.14 M/s
MPEG DECODING (1920x1080): 77 frames/s
MPEG DECODING (1280x720): 175 frames/s
H264 DECODING (1920x1080): 69 frames/s
H264 DECODING (1280x720): 141 frames/s
VC1 DECODING (1440x1080): 89 frames/s
Profile unsupported.
MIXER WEAVE (1920x1080): 394 frames/s
MIXER BOB (1920x1080): 541 fields/s
MIXER TEMPORAL (1920x1080): 149 fields/s
MIXER TEMPORAL + IVTC (1920x1080): 94 fields/s
MIXER TEMPORAL + SKIP_CHROMA (1920x1080): 201 fields/s
MIXER TEMPORAL_SPATIAL (1920x1080): 43 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 35 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 48 fields/s
MIXER TEMPORAL_SPATIAL (720x576 video to 1920x1080 display): 163 fields/s
MULTITHREADED MPEG DECODING (1920x1080): 75 frames/s
MULTITHREADED MIXER TEMPORAL (1920x1080): 109 fields/s