This IS the Avid L2: Re: [Avid-L2] Re: QC Issue with Interleave vs. discrete audio as I anticipated?

Monday, June 8, 2015

Re: [Avid-L2] Re: QC Issue with Interleave vs. discrete audio as I anticipated?

Wow so a wave file can be no larger than 2GB. I'd always hated the 4GB omf export crap but that could be a pain for some really long project stems. Can't say I've hit that limit but most of my audio pass offs come from protools aafs these days for my in house work.

So when QT has a single track with 12 channels in it, which I'm calling interleaved, does that mean there is a Poly Wave file hiding under the hood somewhere? Or is the QT track and subchannels structure totally different than wave files mono or poly. When I do my QT ref export of the 12 channels from my timeline and then save as I get the 12 discrete Tracks that seem to be what the network wants. Now are those files after the save as in QT really mono wav files under the hood with a QT wrapper on top?

Even though big multitrack audio decks were maintenance intensive at least I could see where the audio really was. Now this darn digital voodoo makes things soooooo confusing. ;-(

---In avid-l2@yahoogroups.com, <bouke@...> wrote :

AFAIK, Mono and Poly comes from the BWF world.

(Due to the 2 gig file limit of Wave shooting mono is popular if you do long takes and/or multiple channels)

Interleaved might be the correct term for Wave files, but for Quicktime it's more complicated.

In a multi Channel / single Track the sound channelas are definitly interleaved, but that does not guarantee that the audio is interleaved with the video.

(If you paste a soundtrack in a movie and do a save as QT ref the sound is obviously NOT interleaved with the video)

That's why i don't like the term 'interleaved' for QT.

But, my 'mono' and 'poly' aren't industry terms either.

In QT lingo, it's 'channel' and 'track', where audio one track can have one or more multiple channels.

A QT file can have multiple tracks, and the tracks can contain audio, video or data.

(So you can have a QT file with 40 video tracks, 50 audio tracks where audio track 1 has 16 channels, audio track 2 has just one channel, you name it, it's possible.)

Bouke

VideoToolShed
van Oldenbarneveltstraat 33
6512 AS NIJMEGEN, the Netherlands
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----- Original Message -----
From: bigfish@... [Avid-L2]
To: Avid-L2@yahoogroups.com
Sent: Saturday, June 06, 2015 11:56 PM
Subject: Re: [Avid-L2] Re: QC Issue with Interleave vs. discrete audio as I anticipated?

I ended up going the QT Ref out and Save as. I know we went over the term interleave before. Is the Poly .wav different from interleaved?

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