[mythtv-users] UK: Getting strange audio track on BBC 1
maillists at oikade.co.uk
Tue Jul 19 18:24:37 EDT 2005
> On 7/19/05, Ivan A. Beveridge <ivan at dreamtime.org> wrote:
>>I've been getting odd sound & video *only* during Eastenders (BBC1,
>>BBC3). This has been for the last month, and seemed to conside (or nearly
>>coincide) with my upgrade from 0.17 to 0.18.1.
> Exactly the same symptoms, it is the one major fly in my move from a
> PVR350 to a DVB card, fortunately I don't seem to record much off BBC1
> - but I'm worried it willl spread to other channels (the wife reckons
> she seen it behave like this on BBC2).
> Work around for me is to turn off xvmc-vld Hardware decoding.
I've experienced the same symptoms with certain programs (originally Dr
Who for me) - my understanding is that it is related to having multiple
audio streams, specifically including the "audio description for the
visually imparied" in the MPEG stream. The hardware via decoder can't
handle this type of MPEG, which is why it stutters with decoding on, but
works OK with decoding off.
The solution I found (courtesy of Terry Barnaby's instructions at
http://www.kingcot.eclipse.co.uk/unichrome/mythtv.html) was to turn the
DVB card to TS stream mode in Mythtv-setup. Since then I've not had a
problem with new recordings, though this wont fix old recordings.
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