[mythtv-users] vdpau worth it for hdtv?

Pete Ratzlaff pratzlaff at cfa.harvard.edu
Sat Nov 14 21:57:49 UTC 2009

> On Fri, Nov 13, 2009 at 11:35:11AM -0800, Yeechang Lee wrote:
> > Andre Newman <mythtv-list at dinkum.org.uk> says:
> > > IMHO the ION is not doing VDPAU & MythTV any favours as it's not
> > > powerful enough to make MythTV HDTV look as it should
> > 
> > I keep hearing that Advanced 2x (which the Ion isn't capable of
> > handling) is better than Temporal 2x (which the Ion can handle, and
> > which I use with my 8400GS), but yours is the strongest such statement
> > so far!
> I haven't found the difference to be as large as some people said.
> The main benefit is the reduced CPU load.   Right now there are downsides
> to VDPAU on an underpowered system -- the OSD will cause stutter in the
> video if you use any of the advanced deinterlacers even on 480i, at
> least as of 3 weeks ago.
> It also is less tolerant of errors in your recording which is an issue
> with stuff recorded off the air, and even some firewire recordings which
> do drop packets from time to time.

I'm running an IONITX-A combined front/backend, which I keep hearing is
"underpowered" but I don't see any stutter with Temporal 2x
deinterlacing of 1080i when the OSD is active. Granted, it took some
tweaking to get things just right, but just about the only thing this
setup isn't doing to my satisfaction is PiP.

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