[mythtv-users] Internal DVD player problem with XvMC

John Pilkington J.Pilk at tesco.net
Wed Mar 7 10:02:32 UTC 2007

stanley kamithi wrote:
> see mythtv ticket #3125 for the fix.
> On 3/6/07, *John Pilkington* <J.Pilk at tesco.net 
> <mailto:J.Pilk at tesco.net>> wrote:
>     My internal DVD player has played the menu OK but has hung with repeated
>     'loading codec' messages when a title was selected.  There didn't seem
>     to be many people reporting this.
>     It appears that it was caused by my attempt to use XvMC - may be a
>     problem with nVidia support of 'old' video cards, may be more general.
>     Now with /etc/X11/XvMCConfig removed and Frontend setup -> TV settings
>     -> Playback -> Decoder Settings -> Preferred MPEG2 decoder set to
>     'Standard' or 'libmpeg2' the playback of DVDs or iso images works
>     properly.
>     I've posted more details on atrpms-users.
>     Just one query:  the sound comes through on the alternative channel.  I
>     haven't seen a way to switch the default.  Anyone?
>     TIA, John P

Thanks for your reply re Ticket #3125: my tests suggest that at present 
I get no benefit from XvMC. I've disabled it and things work.  Maybe 
it's because my card doesn't implement it fully:- the manual for nv 
build 9631 says  "GeForce4 MX, GeForce FX and newer products support 
both XvMC's "IDCT" and "motion-compensation" levels of acceleration. 
GeForce4 Ti products only support the motion-compensation level" - so I 
get no cosine transform support.

But there were other problems with enabling XvMC that affected xine and 
mplayer too:  all reported that they couldn't find the dynamic.so module 
unless the *full* path to it was specified in /etc/X11/XvMCConfig. That 
changes with each release, and I understand that this is not what is 

HTH, John P

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