I've just gone back from Ubuntu 11.04 to 10.04 LTS and am now unable to playback HD content recorded from my DVB-S2 tuner card (using MythTV) smoothly. Compiz is disabled. nvidia-settings is not loading on boot, it's pretty much a clean system. X is running at 1080p50.
mplayer -vo vdpau -vc ffh264vdpau -demuxer lavf myvid.mpg
The videos are h264 files from BBC HD/Channel 4 HD etc, they played smoothly before but am now getting massive audio desync with the following printed repeatedly
pts value < previousV: ...
It seems to be once the bitrate hits a certain point. One of the BBC HD files plays back ok until it shows the demo reel which I think is very high bitrate. Another file from Channel 4 HD is permanently slow.
My benchmark figures are as follows. I was playing back similar content (and BluRay) smoothly before. The only thing I can think of is TwinView was disabled previously.
Intel(R) Core(TM)2 Duo CPU E7300 @ 2.66GHz
NVIDIA GPU GeForce 210 (GT218) at PCI:2:0:0 (GPU-0)
VDPAU API version : 1
VDPAU implementation : NVIDIA VDPAU Driver Shared Library 195.36.24 Thu Apr 22 10:39:56 PDT 2010
SURFACE GET BITS: 1016.05 M/s
SURFACE PUT BITS: 620.327 M/s
MPEG DECODING (1920x1080): 67 frames/s
MPEG DECODING (1280x720): 162 frames/s
H264 DECODING (1920x1080): 61 frames/s
H264 DECODING (1280x720): 132 frames/s
VC1 DECODING (1440x1080): 78 frames/s
MPEG4 DECODING (1920x1080): 72 frames/s
MIXER WEAVE (1920x1080): 303 frames/s
MIXER BOB (1920x1080): 507 fields/s
MIXER TEMPORAL (1920x1080): 142 fields/s
MIXER TEMPORAL + IVTC (1920x1080): 93 fields/s
MIXER TEMPORAL + SKIP_CHROMA (1920x1080): 187 fields/s
MIXER TEMPORAL_SPATIAL (1920x1080): 60 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 47 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 68 fields/s
MIXER TEMPORAL_SPATIAL (720x576 video to 1920x1080 display): 210 fields/s
MIXER TEMPORAL_SPATIAL + HQSCALING (720x576 video to 1920x1080 display): 127 fields/s
MULTITHREADED MPEG DECODING (1920x1080): 62 frames/s
MULTITHREADED MIXER TEMPORAL (1920x1080): 93 fields/s