[mythtv] DVB recording issues

Kent Williams kent2 at optusnet.com.au
Sat Mar 19 14:11:14 UTC 2005

> On Behalf Of Jason W
> Sent: Sunday, 20 March 2005 12:51 AM
> On 2005/03/19 22:54, Hamish Moffatt wrote:
> > You can change audio track using the +/- keys. Have you tried
> > when the sound disappears?
> Ah, cool. I'll give that a go next time. I've no recordings left to
> with right now.

When using PS mode, switching to another audio track usually works for
me here in Sydney. The real problem began on my Channel 7 recordings
that only had one audio track.
> > FWIW, I'm in Melbourne, running 0.17, in PS mode, and I've never had
> > problem with the audio cutting out.
> The problem seems to be worse when I am having signal issues. Your
> signal quality is good/perfect I presume?

My audio usually drops out just after a signal glitch.

> The problem also seems to occur more often when I have more than one
> recording in progress (I have 3 cards). Are you running a multi-tuner
> setup?

I have a dual DVB tuner setup. I haven't noticed things being worse when
both tuners are recording.

> I might drop back to 0.17 and see how that goes, assuming the database
> structure is compatible.

It seems TS mode is the way to go to get around these sound problems
(along with the other benefits that TS provides), except for the issue
where recordings appear to only be about 1/6 of their real size (despite
playing back ok if you let them play through). This seems to occur on
channels where the PCR PID is different from the video PID. As a result,
channels 7 and SBS work fine, whilst the others exhibit this problem.
However, Taylor is kindly looking into this problem in his spare time to
try and fix things.

One other thing I've noticed for me at least in the latest CVS vs CVS
just before 0.16 (I think), is that the recordings no longer play back
in Windows Media Player by simply giving them a .mpg extension.


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