[mythtv-users] HDTV 5.1 sound rear channels become front channels?

[Mark J. Bobak]

I have seen this also.  In my case, it was HD over-the-air, local ABC
affiliate.  I also have the HDHomeRun.  I never thought that it may be
the HDHomeRun, I figured it was just the network and/or local affiliate
screwing up the broadcast.

-Mark

On Fri, 2007-05-11 at 13:01 -0700, Jack R. Hyde wrote:
> I just saw the same thing recently with an HD program on CBS through QAM 
> on an HDHomerun. My receiver showed DD the entire time, the front 
> speakers where still working but I had to put my ear to them to tell. 
> The rear set volume was much louder than normal, but it only lasted 
> about two minutes or so, when it suddenly snapped back to normal. 
> Guessing it was just a weird encoding glitch somewhere along the chain.
> JS Boyd wrote:
> > On Network HDTV recorded with the HDHomerun via QAM that is passed to my 
> > stereo via SPDIF sometimes it appears that only the rear channels of a 
> > 5.1 HDTV audio stream will be played or may be everything except the 
> > center dialog channel. For instance, you will hear all the incidental 
> > music and sound effects but no dialog or very muted dialog.
> >
> > It seems to happen when the network switches 2 channel audio to 5.1 
> > channel audio. There is a perceptible shift in the audio as it changes 
> > from 2 channels to 5.1 channels. My receiver identifies both the 2 
> > channel and 5.1 channel audio as it shifts. The commercial before the 
> > program starts will be fine in 2 channel, but the program will start and 
> > there will be no dialog.
> >
> > The workaround is to just ESC out and restart the playback of that 
> > program at the current position. But it appears like something is being 
> > changed in the audio that Myth is missing. It happens with CBS regularly. 
> >
> > I'd suspect my receiver, except that it never happens with DVD playback 
> > when they transition from 2 channel to 5.1 channel audio.
> >
> > Anyone else seeing this?
> >
> >   
> 
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