[mythtv-users] nVidia and XvMC

[William Lewis]

>I sometimes use XvMC on my x86-64 system.   It does work, though it
>has its issues.
>
>My machine is very similar to the original poster's (Athlon64 3200+,
>Nvidia FX5200, Nvidia 7676 drivers,  Gentoo x86_64, MythTV svn 7337;
>HD3000, Fusion3HDTV, PVR-500).   But, I can get smooth playback
>without XvMC running:  libmpeg2=80%user / 10% idle,  Standard
>Decoder=60%user / 30% idle, XvMC=25%user / 60% idle.
>
>However, I don't use XvMC very much, because every time an
>OnScreenDisplay comes up, the audio stutters until a second or two
>after the OSD goes off.   So, every time I skip a commercial, it takes
>a while to smooth out.  Other than that, the video decoding works very
>well.

Thanks for your help, Todd.  What version of mythtv are you using?  I would 
assume that it's some sort of subversion pull, since the DVB HD support in 
0.18.1 doesn't have the channel scan wizard...
>As for the OP's "X11 BadAlloc error",  this is a longstanding issue in
>the x86-64 NVidia driver.   NVidia has been told about it a long time
>ago, but it has remained unresolved for several driver releases (ain't
>those closed source binary drivers great!).     The workaround is to
>repeatedly try to start an XvMC decoder, after 20+ failures, it will
>eventually succeed.  Then, XvMC will work until you restart X11.    I
>use an XvMC capable mplayer app to keep trying XvMC until it succeeds.
>
>
>
>I should probably look into OSD options, to get rid of the XvMC
>problems..  I would gladly take a less attractive OSD in exchange for
>smooth playback while leaving lots of CPU available for commercial
>flagging or other Linux tasks.
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