[MPlayer-users] 5.1 audio

[Fredrik Eriksson]

Hello.
I'm having problems understanding how 
5.1 audio works. I played around a 
little with the channels audio filter, 
and figured that on dvds the channels 
are something like this:

0 - left front
1 - right front
2 - left rear
3 - right rear
4 - front middle
5 - subwoffer

but some other files with 5.1 audio 
(mostly matroska with aac) uses the 
channels different, mostly they move the 
middle speaker to channel 0 (I think 
I've seen one where it was on 2 as well).

So question: Are the channels supposed 
to be stored different in different 
containers/codec? if so, wouldn't it be 
a good idea to have mplayer detect the 
container and add a filter chain so that 
the audio is heard correctly?

Fredrik Eriksson