[MPlayer-users] Mac OS X Audio 5.1 Channel Output Problems
Dominik 'Rathann' Mierzejewski
dominik at rangers.eu.org
Thu Jan 17 20:17:13 CET 2008
On Thursday, 17 January 2008 at 11:07, Reimar Döffinger wrote:
> 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?
No. Actually most (even cheap onboard) sound cards have been able to do
that for a couple of years now.
> > 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.
Don't bet on it. ;)
Regards,
R.
--
MPlayer developer and RPMs maintainer: http://mplayerhq.hu http://rpm.livna.org
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