[mythtv-users] New system w poor quality picture

Johnny jarpublic at gmail.com
Wed Jun 10 21:07:45 UTC 2009

> Hi All,
> I've been lurking here for only about a month so I'm still a little wobbly
> on my Myth-feet. I just finished setting up a new Mythbuntu box (my first)
> front-end / back-end combo, and was able to record and watch live TV on it.
> This is just so freaking cool! But the quality of the live tv picture is a
> little disappointing. It is a tiny bit jerky and nowhere near as clean and
> clear as direct from antenna to TV. This is OTA only from an HD digital
> antenna. I think I might need to set up this VDPAU that everyone is talking
> about but I'm not real sure how I can even determine that. Or it may be some
> other problem.
> Hardware:
> TV - 42" Samsung LCD 1080P
> Tuner - HD Homerun
> Motherboard - Foxconn A7DA-S
> CPU - AMD Athlon 64 X2 7750 Kuma 2.7Ghz dual core
> Video - Asus silent GeForce 8400GS 64bit PCIe
> Ram - Kingston 4GB PC2 8500
> PSU - Corsair 400W
> HDDs - Samsung 1TB x2 for video + Samsung 250GB for os
> Software: Mythbuntu 9.0.4 64bit
> Is there a how-to on setting up VDPAU and do you think I need it?

Your machine should be totally capable. I would check out the playback
profiles: http://www.mythtv.org/wiki/Playback_profiles. You may want
to pay particular interest in which deinterlacer you are using.

You should know that VDPAU is currently only supported in the
development branch of mythtv, so it isn't in a stable release of
mythtv. Jean-Yves has done an unsupported backport to provide VDPAU
for .21-fixes: http://avenard.org/media/MythTV_%26_VDPAU/MythTV_%26_VDPAU.html.
However, you should understand that this is not supported by the
mythtv devs so you are kind of on your own if you have problems with
it. Your system is perfectly capable without VDPAU, but VDPAU does
have really nice deinterlacers.

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