If you are unsure of j2k abilities then don't use it. Using ProRes is fine. Of you can capture uncompressed. Or capture to DPX or TIFF sequences.
Jay
On Jul 21, 2016, at 3:59 PM, Paul Dougherty lists@postlit.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:Thanks for the link Terence. Main question remains - can one set Avid to capture a lossless version of jpeg2000? Or by some miracle can the j2k at be actually lossless at 156 megs while the same minute captured as ProRes LT was 222 megs. Reading that link (http://petapixel) it says that ProRes is based on jpeg2000, so can j2k effectively uncompressed be that much smaller than somewhat compressed ProRes LT ?Thanks,PaulCompression can be lossy or lossless.
Its possible to have 2:1 compression that is completely lossless.
Avid codecs are wrapped as Avid and Prores as Apple. Apple are no more open (in fact less so) than Avid. But Avid don't limit by platform. Apple do. But if you live in Apple land then thats no issue.
You don't seem happy to go the Avid route. In which case there are other J2K codecs you can buy but you will need to find a process to encode to that.
Or just stick with ProRes.
Pat from his mobile.
-----Original Message-----
From: Paul Dougherty <lists@postlit.com>
To: Avid-L2@yahoogroups.com, Pat Horridge <pat@horridge.org.uk>
Cc: Edit B <bouke@editb.nl>
Sent: Thu, 21 Jul 2016 13:38
Subject: Re: [Avid-L2] Avid & jpeg2000 - More questions (& anomalies)Thanks everyone. Two things important to me have not been touched on.jpeg 2000 as used for archiving, is lossless. If the j2k sample is considerably smaller than the ProRes LT, I'd bet my bottom dollar that it is compressed. Someone knowledgeable on the list said earlier that j2k was added as a capture standard to Avid to accommodate the archival needs and standards of big studios... how does one get to the archival/lossless version of j2k in MC?if jpeg 2000 is an open standard then a video captured to that standard should not require Avid software to playback. Somehow Avid fingerprints are on it (not sure what expression to use) and it's been rendered proprietary. In the case of ProRes (ok not an open standard but a non-Avid industry standard) - no Avid fingerprints, it just plays like any ProRes file.Thanks,Paul
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Posted by: Jay Mahavier <jay_mahavier@earthlink.net>
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this is the Avid-L2
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