[mythtvnz] VDPAU OK on TV3, not elsewhere

[Steven Ellis]

On Mon, February 23, 2009 3:27 pm, Nick Rout wrote:
> I have been helping a newbie get his DVB-T box up and running. I am
> sorry but some of this will be vague until I ssh into his system again
> tonight to get exact error messages, but I am looking for some tips in
> advance as I don't want to miss anything when I have the chance to ssh
> in.
>
> The CPU is some grunty quadcore monster and he has a EN9400GT Silent
> 512MB video card.
>
> Its a fresh install of Mythbuntu 8.10 plus I have enabled JY Avenard's
> stable repo and upgraded. [1]
>
> TV3 seems to run fine but every other channel  runs very badly [2],
> being totally broken up (a bit like a video where the player is
> struggling to find an I-frame). Sometimes a message comes up in the
> frontend saying there has been a video error, sometimes it simply
> freezes and won't respond to keypresses, sometimes it plays on for
> quite a while, but badly. There is a stream of messages in the
> frontend log but I didn't write them down at the time, hopefully can
> access them tonight.
>
> Composite is disabled in xorg.conf and the output of
> /var/log/Xorg.0.log seems to confirm it is disabled.
>
> Not sure if I got my playback profiles right - does anyone have a set
> they use successfully in NZ with vdpau? (also where do I find these in
> the database as I will be accessing by ssh).
>
> [1] I did encounter problems upgrading because of the shift of
> libvdpau from nvidia-glx to nvidia-libvdpau, and in the end had to use
> dpkg to remove the nvidia driver and then do the upgrade. But it is
> all up and running at 180.29 now.
>
> [2] for the benefit of JY and any other people who may not be familiar
> with the NZ channels there is a summary here:
>
> http://www.mythtv.co.nz/mythtv/2009/02/11/initial-vdpau-testing/
>
> In short TV3 is 1080i, the others are all 720p or 576i.
>

Thanks for the reference ;)

Try a patched version of MPlayer first to see if it is a graphic card
issue, then play with MythTV.

In theory TV1/2 should just work as they aren't interlaced, but don't
forget "-mc 2 " for the interlaced channels.

I've had very few issues with 180.29 compared with previous releases with
MPlayer but I haven't tried on a 9xxx series card.

Steve



--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
email   - steven at openmedia.co.nz
website - http://www.openmedia.co.nz