[mythtv-users] Re: mythtv-users Digest, Vol 33, Issue 144

[Roger McClurg]

>Date: Sat, 29 Oct 2005 09:52:03 +0100 (BST)
>From: Nick Parkinson <nickparkinson at yahoo.com>
>Subject: [mythtv-users] Jittery Audio/video
>To: mythtv-users at mythtv.org
>Message-ID: <20051029085203.75297.qmail at web60020.mail.yahoo.com>
>Content-Type: text/plain; charset=iso-8859-1
>
>Hi, using EPIA MII I have had similar problems with Tv
>Playback using Knoppmyth R5A22 in the UK.  As it
>stands playback is slighly jittery but only really
>noticed with live sports and scrolling bars (e.g. SKY
>NEWS).
>

My video jumps every 2 seconds.

>First of all tuning settings; for me making sure that
>transports are correctly configured for DVB.
>
>Then, Playback Settings
>
>- enable VIA XvMC, not the generic XvMC

Everything you suggest is done except this. I can't find XvMC or VIA XvMC as an option anywhere. Where is this found? 

>- enable extra audio bufffering 

Done

>- disable the libmpeg2 encoding 

Done

>Commercial Skipping is supposed to be bad with VIA
>motherboards (never tested it myself).  Also I'm told
>VIA won't work  with HD.

Off

>If XvMc is working properly the OSD on tv playback
>will be black and white.  If not then update DRI for
>the latest DRM/VIA modules.

>A specific TV format in the XF86Config-4 file also
>helps... for me PAL-I.