[mythtv-users] A few general questions about VDPAU setup.

Mike mythtv at dtmc.ca
Tue Oct 11 13:18:01 UTC 2011


On 11 October 2011 00:58, linux guy <linuxguy123 at gmail.com> wrote:

> >> What does this information mean ?    What am I supposed to set ?
> >
> > Choose a vdpau profile and ignore the rest. start with slim and work
> > your way up until it stops working smoothly.
>
> So the profile that I select in that list is the one that it will run with
> ?
>
> How do I know how many CPUs to select ?
>
> >> 4) How do I know a) when VDPAU is working and b) what mode its running
> >> in when I'm running Myth in full screen ? (Which is where its going to
> >> take the most performance to display the content)
> >
> > You read the logs, try ssh in and watch the log with tail -f
>
> Exactly which logs should I be watching ?
>
>
> >> 5) What part does the Xorg.conf file play in all this ?
> >
> > There are a few things to make sure you have set for vdpau to work,
> > they are set out in the howto.
>
> By howto, do you mean the wiki entry or is there another document I am
> supposed to be looking at.
>
> Is it necessary to install vdpau-video-freeworld ?
>
> Would anyone care to share their xorg.conf file ?
>
> My current symptoms are that the front end can't keep up even with a
> simple avi file, ie the video runs way too slow.  Mythfrontend hangs
> when I try to leave the video player.
>
> This machine has 2GB of RAM, installed into one of the two sockets.
>
> Any ideas ?
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>

I wrote up some notes which may complement what you've already found on this
thread & wikis...
http://michael.dtmc.ca/blog/2011/02/mythtv/

Note, I probably didn't have to compile in VDPAU support but only found
VDPAU was missing on my Ubuntu system when I tried to compile and found it
wasn't pulling it in... and the system was missing VDPAU libraries... as a
result video playback was awful until VDPAU was enabled and the system
stopped using the main CPU.

"Include libvdpau1-dev is installed (otherwise no VDPAU compilation
possible).  This wasn’t included in my default installation." (Default:
Ubuntu 10.10)

I've also got some imperical notes on VDPAU profiles (Slim, Normal etc).  I
ended up editing the pre-configured profiles you've found and watching
playback.  For my HW I could only really get Temporal 1X to work, with an
ION 1, and I suspect with the more recent ION 2 chipset you'd have better HD
performance.

My post also has some logs which other mythtv-ers were able to browse and
critique possible issues with my setup.  If you can collect them I suspect
you'll narrow down your problems quickly as the logs are very verbose.

Hope this helps, I know its not exactly a plug-and-play experience.
Mike.
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