[mythtv-users] No sound with dvb-t recordings, but ok on others

[William Kenworthy]

On Thu, 2008-04-24 at 11:24 +0100, David Watkins wrote:
> On 24/04/2008, William Kenworthy <billk at iinet.net.au> wrote:
> > I have a backend/frontend plus two working frontend only systems.  I am
> > adding a new frontend which has developed a weird sound problem. The
> > backend has a bt848 encoder plus a dvb-t card
> >
> > The new system has sound with the bt848 recordings, but not with the
> > dvb-t recordings.  The recordings play fine on the other systems.
> >
> > The recordings have an ac3 and an mp3 component - selecting either from
> > the menu makes no difference - defaults to ac3.  Running mythfrontend in
> > a terminal shows no errors as the codecs are selected.
> >
> > Where is the best place to look for a cure?
> 
> It's pretty much impossible not to record the sound with DVB because
> the soundtrack(s) are compressed into the data stream.
> 
> The most likely options (to me) are:
> 
> 1)  Your frontend player has selected the wrong (ie an empty)
> soundtrack.  Like DVDs, DVB has the potential to carry several
> soundtracks: multiple languages, commentaries etc.  Often the unused
> tracks are silent but this doesn't always stop the player selecting
> them.  Maybe one of your frontends is using a different player or
> player settings.  Try cycling through available soundtracks (available
> from the menu when watching using the myth internal player).
> 
> 2)  Mixer settings.  Maybe DVB recordings uses a different channel on
> the mixer, which has been accidently muted.

The sound is there - it plays fine on all the other frontends - its only
the new one thats affected.  And even if I manually select each of the
two available sound tracks, they dont play.

Billk