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

[Seth Daniel]

On Fri, May 11, 2007 at 10:47:39AM -0700, 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?

I saw this last night for the first time.  In my case it was OTA HDTV
CBS recorded via an HDHomeRun.   Quitting out and going back to the
recording didn't resolve the problem.  I had to wait until after the
first commercial break for the sound to revert back to normal.

-- 
seth / @sethdaniel.org
Vegetables are what food eats.
Fruit are vegetables that fool you by tasting good.
Fish are fast moving vegetables.
Mushrooms are what grows on vegetables when food's done with them.