[mythtv-users] Audio wierdness: AC-3 upconvert. Do I have a problem?

[Phil Wild]

>
> that's what it is... it's the same graphic controller as a nvidia
> 9400M... audio channels are incorrectly ordered on that card.
>
> Here is a post that can help:
>
> http://www.mentby.com/Group/mythtv-users/51-wrong-speaker-problem-solved.html
>
> (background info)
> http://www.mentby.com/Group/mythtv-users/51-wrong-speaker-problem.html
>
> >
> > The reason I started fiddling is that recently, I seem to get a lot of
> > crackling through the rear speakers (most prominently left-rear), only
> > through mythtv. I first thought it was the speaker or amp, but everything
> > sounds perfect with other sources. I then put it down to a bad rip but
> it is
> > evident in lots of files. I did not notice any of this prior to my
> upgrade
> > to 0.26. So I thought I would play with the audio settings and then
> noticed
> > this issue.
>
> what were your settings previously?
>
>
I hadn't changed settings previously, just upgraded from 0.25 to 0.26 and
then a couple of days after that noticed the clipping/crackling coming from
the rear surround speakers. I notice it on the left rear the most.
Previous setting did not upconvert to 5.1, had just enabled DD, DTS, and
all the other checkboxes. In the track I have been testing, the sound is
just two channel. Device is configured as alsa:hw. I am off topic for the
original thread now...

I did some more testing tonight. bluray track via bluray player, very loud
and no issues. The track I was playing through mythtv that sounds terrible,
I played through my Roku3 and Plex and it sounds perfect.
I am going to switch the hdmi inputs on the back of the receiver to confirm
that it is not the receiver input. I'm also going to load VLC onto my
frontend and play the file through it to see if it is OS related rather
than mythtv.

Cheers

Phil
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