Why isn't the default audio track set by default as default?

[justinrh 287]

I added two titles to my movie library, and both had the AAC audio track set but the AC3 track is marked as "default".  Why wasn't the AC3 track set?  What can cause this?

Edited August 1 by justinrh

[Suliamu 54]

With mkvtoolnix you can open the specific file and make the track(s) you want the default. 
It can be also done programmatically with a script. 
And when just changing this aspect the file must not be transcoded so it is a very fast process. 
It is best to change everything regarding this directly in the files otherwise when you make a reinstall or change to some other system you would have to do it everything again. 
And when this is already set accordingly i would guess that your client might be automatically choosing Stereo preferably to 5.1. Which client is this? There exists a "Downmix option" in certain clients afaik which could maybe do this. 

Edited August 1 by Suliamu

[justinrh 287]

web app and Android TV

[ebr 16676]

Hi.  Each app will select the best audio for its environment - based on your settings.

What are your audio default settings?

[justinrh 287]

12 minutes ago, ebr said:

Each app will select the best audio for its environment - based on your settings.

Hmm.  ATV is running on a Shield with 5.1 output.  I guess my PC for web app has stereo.  I don't see any pertinent audio settings in either app.

This is a strange one because the 5.1 track normally is set by default.

If I change the track in one app, will other apps inherit that change?  Or does each app keep its own title settings?

[Luke 43036]

How have you configured your Emby user audio settings?

[justinrh 287]

You mean this?

Edited August 1 by justinrh

[ebr 16676]

This:

 

If you always want the "default" to play you would select that option.  However, that could cause remuxing/transcoding when it isn't strictly necessary.  In the above screenshot, the device probably doesn't directly support the audio codec of the first track so it selected the second one to direct play.

[justinrh 287]

Something still isn't making sense.  You imply if 'default' pref is off, then the device decides.  But in my case the AC3 track is supported.

Thanks for the info - I learned some things.  I can't explain what happened and probably isn't worth chasing in this case.  I'll have to monitor.

Edited August 1 by justinrh

[ebr 16676]

It could also be that the other track was selected previously as I see you have "Remember audio track selections" turned on.