[mythtv-users] sound channel settings changes

Jean-Yves Avenard jyavenard at gmail.com
Tue Apr 12 05:29:36 UTC 2011

On 12 April 2011 11:37, Andy Wettstein <ajw1980 at gmail.com> wrote:

> The setting I am talking about is on the settings. I can tell that the
> setting has been changed because because during playback the receiver
> will say PCM instead of Dolby Digital on shows that I know have Dolby
> Digital.

This is no proof whatsoever that the settings got changed.

Stereo AC3 will always be decoded if you have set your speakers as
5.1. This is to enable upmixing on the fly.
Only multi-channels (>2) AC3 is bitstreamed.

The only time stereo AC3 is bitstreamed , is if you have check AC3 and
set your speakers as stereo

> I then go into the settings and find that the speaker configuration is
> set to stereo. I change it to 5.1 and it works fine until the next time
> it changes. As I said, it has changed to stereo several times and I
> haven't really noticed a pattern as to when it changes. I know it
> doesn't happen every time mythfrontend starts or when the I have the
> machine suspend because it doesn't happen every time that happens.

As I wrote earlier ; it can only change from 5.1 to Stereo if you have
modified yourself the mysql entry. mythfrontend will *never* change
this value by itself.

The only way mythfrontend with change that value is if you go into the
settings and change from 5.1 to Stereo. Either you did yourself, or
you have something else outside of myth doing it.
it won't do it by itself. In fact, outside the settings code ; there
is not even code to modify the mysql entries : it can only read the

So something is accessing the mysql database ; and it certainly ain't
myth outside the settings

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