MXF+JPEG-2000+HDD = Future of Video Preservation?
Anonymous Archivist writes "Media Matters, a technical consultancy specializing in archival audio and video material, recently completed a Mellon Foundation funded Digital Video Reformatting Preservation Project for the Dance Heritage Coalition. They conclude that MXF is the recommended container format, JPEG-2000 is the recommended encoding format and HDD is the recommended storage media. It's a very valuable series of experiments and offers a strong indication of where the archival preservation of analogue video is heading."
The HDD recommendation doesn't seem to make much sense. The article talks about cost-per-gigabyte, but obviously it is much cheaper to use CDRs or DVDRs. This is video preservation, after all, not storing indefinitely for video /editing/, which would require a more malleable storage medium.
And before someone points out that there are studies showing that the longevity of CDR/DVDR discs is questionable, surely proper storage of discs (and not buying the Best Buy free-after-rebate special) would be sufficient. HDD, after all, is susceptible to head crashes, and being a magnetic medium can be more easily overwritten.
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For whatever reason (I'm not a video expert) many people prefer intraframe codecs for archival. As you probably guessed, Motion JPEG 2000 just treats each video frame as a still image and compresses it with JPEG 2000.
Dirac will give much better compression that JPEG 2000, but it also introduces the possibility of interframe artifacts.