Thanks Brad,
So as long as the channels are assigned properly in a QT or AIFF file,
regardless of the actual order in the file, the fold down will occur as you
specified?
(L,R,C,LFE,Ls,Rs) -> (L,R):
out[00] out[01]
in[00]: (1.000) (0.000)
in[01]: (0.000) (1.000)
in[02]: (0.707) (0.707)
in[03]: (0.000) (0.000)
in[04]: (0.707) (0.000)
in[05]: (0.000) (0.707)
Thanks,
Jamie
-----Original Message-----
From: Brad Ford [mailto:email@hidden]
Sent: Friday, April 28, 2006 12:14 AM
To: email@hidden
Cc: 'QuickTime Users'
Subject: Re: copying 2tk fold-down of 5.1 material (QT7.04)
On Apr 27, 2006, at 10:58 PM, Jamie wrote:
> Hi,
>
> Is it possible to save a proper mix down from 5.1 source material?
> I see
> that QuickTime has this functionality built into playback, but can
> this happen on export?
>
> Exporting to stereo from a channel aiff yields just the first 2
> channels of the 6tk and other info is lost.
Jamie,
Our export chain uses the same path as our playback code. You absolutely
can export 5.1 -> stereo. Here are the mix coefficients you'll get:
(L,R,C,LFE,Ls,Rs) -> (L,R):
out[00] out[01]
in[00]: (1.000) (0.000)
in[01]: (0.000) (1.000)
in[02]: (0.707) (0.707)
in[03]: (0.000) (0.000)
in[04]: (0.707) (0.000)
in[05]: (0.000) (0.707)
-Brad Ford
QuickTime Engineering
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