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Re: mixing audio channels

Subject: Re: mixing audio channels
From: "no spam" <email@hidden>
Date: Thu, 29 Jun 2006 13:59:54 -0400
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So ... this was a bit over my head.

I was given a way by Dave to use Quicktime Pro and export (sound to aiff) two channels at a time resulting in 2 stereo pairs. This worked great but
how can I do this programmatically with quicktime?

Thanks,
Mark

On 6/29/06, Daniel Steinberg wrote:

Unfortunately, QuickTIme does not currently demultiplex the other two channels of audio from the DV stream, it mixes the left and right channels together. I believe there was a time when we couldn't reliably depend on all cameras delivering silence on the two unused frames in 12-bit streams, and things got stuck that way. It's on our list to fix.

Daniel Steinberg

QuickTime Engineering

At 11:48 AM -0400 6/29/06, no spam wrote:
Yes you can tell I don't know a great deal about this :-)

We're trying to import a clip into our Avid system from a Pinnacle system. The Pinnacle system is a DV25 AVI video with 4 channels of audio. The Avid system will only recognize two of the 4 audio clips when they are quicktime wrapped. So yes I need to convert the 4 channel audio clip into 2 two-channel stereo tracks.

Thanks,
Mark

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References:
	>mixing audio channels (From: "no spam" <email@hidden>)
	>Re: mixing audio channels (From: Dave Addey <email@hidden>)
	>Re: mixing audio channels (From: "no spam" <email@hidden>)

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