[mythtv-users] Performance problems with HDTV (choppy)

Mark Schuren schurenmark at versanet.de
Wed Dec 30 12:18:37 UTC 2009

Am Mittwoch, den 30.12.2009, 13:01 +0100 schrieb Johannes Schneider:
> Hi,
> I have a performance problem with my box (contains both backend and
> frontend):
> mythtv-frontend: 0.22.0+fixes22957-0ubuntu0+mythbuntu3
> GeForce 8500 GT
> 3x DVB-C (Philips Semiconductors SAA7146)
> Intel(R) Core(TM)2 CPU 6300  @ 1.86GHz
> PAL channels work like a charm. Everything looks good. Some HD channels
> can be viewed well (Germany; Kabel BW: ANIXE HD, HD1, Servus TV).
> But some other channels (Das Erste HD, Das Zweite HD) are choppy. I
> don't know what the difference between those channels might be (codec?).
> How can I find out?
> I tried many different settings: vdpau with and without deinterlazer.
> All those software renderers etc.
> So could anyone give me any hints how I could try to improve the
> performance?

It's a known issue with ARD/ZDF/ARTE HD. See Trac ticket #7481.

There is a patch available (libavformat.diff), but not (yet) in the
official builds, so you would need to recompile until it's officially

See my recent thread in this mailing list regarding "German HD


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