[mythtv-users] Broadcast problems?

Brad Templeton brad+myth at templetons.com
Sun Mar 13 20:36:52 UTC 2005


On Sun, Mar 13, 2005 at 12:07:12PM -0800, Joe Barnhart wrote:
> 
> --- Brad Templeton <brad+myth at templetons.com> wrote:
> 
> > No dialog is probably a local problem, it happens
> > fairly often.  This
> > occurs when you have ac-3 sound and myth or your
> > sound drivers are
> > confused and don't merge the center channel into
> > your right and left.
> > 
> > (If you got no dialog and you are driving a center
> > speaker, then it's their
> > fault.)
> > 
> > You need to play around with random settings in your
> > alsamixer to fix this.
> 
> While "no dialog" may have local causes at times, it
> DOES happen as a result of mistakes at the transmitter
> end, too.  The last couple of episodes of CSI (LV)
> have begun with no dialog for the first 3-5 minutes. 
> Then someone at the station flips a switch and the
> dialog magically appears.  This affects only the HDTV
> transmission, the analog broadcast is unchanged.
> 
> Then there's the local PBS station, KQED.  Since I
> installed 0.17 the sound for KQED has stopped
> completely.  I discovered that Myth is choosing the
> wrong sound channel by default, and that I can get
> KQED  sound to work by pressing "+" on the keyboard to
> choose a different sound stream.
> 
> I assume, like other 0.17 problems, this has been
> fixed in CVS but will not be added to the 0.17
> "release."

Nope.  I have a patch you can find on myth-dev for the kqed problem,
but people won't accept it because on DVDs it might make a different
choice than it does now.  People are waiting to gather more data
about multi-stream stations.

I wonder though, if during that "no dialog" period, you still get it
from the center channel of ac-3?  I don't have my ac-3 hooked up yet.

I mean the only reason you would be able to get background and no
dialog is if the program is coming in ac-3 and the center channel is
missing, either strangely at the station or at your end.


More information about the mythtv-users mailing list