Avid hid their quicktime codecs deep on their site. I found them! — Avid QuickTime Codecs LE 2.1 Download:
http://community.avid.com/forums/t/20400.aspx
There are two codec packages available from Avid:
Avid Codecs LE – available on the Avid QuickTime Codecs LE 2.1 Download page
Avid Codecs PE – available only with Avid editing applications
Avid Codecs PE contains the MPEG IMX codec while the Avid Codecs LE package does not because of end-user licensing issues. You can find the Avid Codecs PE installer under Installers\AvidCodecsPE.
This table illustrates which codecs are included in each package:
Avid Codecs LE
Avid Codecs PE
Avid Meridien Uncompressed
Avid Meridien Compressed
Avid 1:1x
Avid Packed
Avid DNxHD X X
Avid DV X X
Avid DV100 X X
Avid MPEG2 IMX X
All Avid QuickTime codecs support “fast import,” as long as the import settings are properly configured; Avid codecs might import far more quickly than other QuickTime codecs.