[Avid-L2] More questions (& anomalies) re. Avid & jpeg2000

To recap - I'm trying to help a colleague with a fairly large archiving/digitizing project for a career's worth of NTSC work. The last time I posted about this someone mentioned capturing in jpeg2000.

I did some digitizing trials today and was surprised by the results. First I should add that I understand when people talk about jpeg2000 (henceforth j2k) in an archival context… it is lossless, right?

For that reason I'm surprised that an a/b test of a minute for ntsc captured at j2k was 156 megs while the same minute captured as ProRes LT was 222 megs. Can anyone explain? Also am I missing a setting where one dials up the level of compression (or not) when using j2k?

Part of the j2k appeal for archiving is that it is an open standard while ProRes is not. However when I exported a Quicktime (same as source) using each capture setting, the ProRes LT will play on a Mac without any special Avid software (codecs). Whereas the j2k would not. "Quicktime Player can't open such-n-such.mov To see if additional software is available that will enable Quicktime…"*

Also when you do a Get Info on the j2k it says "Avid JPEG 2000" whereas the ProRes just says Apple ProRes 422 LT. Ok Apple is proprietary but far more universal than Avid.

*Just as a test I also captured at Avid 2:1 and got this msg "QT Player can't open" on what I'll call a plain vanilla Mac (no Avid soft). The bottom line is that for my purposes j2k does not seem to be an open standard.

Thoughts and feedback welcome.

Thanks,

Paul

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