[MPlayer-users] Mac OS X Audio 5.1 Channel Output Problems

[Reimar Döffinger]

Hello,
On Thu, Jan 17, 2008 at 01:45:40AM -0800, galenz at zinkconsulting.com wrote:
[...]
> However, this is extremely un-Mac like and un-intuitive, given the  
> available data. The Apple audio API automatically detects the number  
> of channels physically available. The macosx audio out module should  
> pass this value along to mplayer and set the number of channels  
> accordingly.

I am not aware that there are any sound cards that can detect whether 2,
4, 6 or 8 speakers are connected to them. Does Apple have some special
hardware there?

> This is what I mean about mplayer not detecting the multple channels.  
> Various other applications - such as QuickTime Player and VLC - rely  
> upon detecting available channels in this manner and make audio  
> conversion/output settings accordingly.

I'm almost certain that they behave exactly like MPlayer with channels=6
at the expense of giving wrong output for those who only connect two
speakers then.

Greetings,
Reimar Döffinger