[mythtv-users] Playback profiles and xvmc

[Kevin Kuphal]

On Sat, Apr 5, 2008 at 6:34 PM, John Finlay <finlay at moeraki.com> wrote:

> Michael T. Dean wrote:
> > On 04/04/2008 06:43 PM, John Finlay wrote:
> >
> >> The problem of not being able to use xvmc reoccured again as I was
> >> trying out various profile settings in a new playback profile that I
> had
> >> created. Again removing all the playback profile groups - in effect
> >> resetting them - again allowed xvmc to be used. Has anyone else had
> this
> >> experience? Could this be a bug in the profile code?
> >>
> >
> > More likely the new profile groups you are creating (or the
> > modifications to the one you're using--if you're not creating new ones
> > as recommended by the wiki page to which you were referred) are not
> > properly configured.  Perhaps you're not even using XvMC, but instead
> > getting a fallback that your new profile groups disable.
> >
> I created a new profile group for experimentation and it only has one
> ruleset which has  rez > 0 0. I then modify the decoder setting and the
> video render setting within the offered choices. I then try out the
> change to see the affect on cpu usage, etc. I haven't figured out which
> specific setting(s) causes the xvmc to stop working but it is repeatable
> that deleteing all the  profiles clears the problem.
>
> Given that the profile settings for video decoder and deinterlacing are
> constrained by the choices of decoder and assuming that these
> constraints are compatible, what possible misconfigurations would be
> likely? Incompatibility with the hardware capabilities?


Check your frontend logs (maybe with -v playback) and you'll see they aren't
constrained and will try to fallback to various things if what you narrowly
select isn't supported IIRC.

Kevin
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