Avatar gives 3D backwards recognition

CinemaSquid has posted the technical specifications of the Blu-ray for Avatar on the AV Science Forum here. Looks like it will be pretty good. One point that caught my eye was the disc title: ‘RED_BIRD_2D_WW’. Presumably ‘Red Bird’ was some kind of code name. I would have thought ‘WW’ meant ‘world wide’, except that the disc is locked to Regions A and B (a welcome improvement over Fox’s usual habit of locking all discs to a single region).

And I can only suppose that the ‘2D’ means that Fox is planning a 3D version in the near future.

Meanwhile, I will probably never review this disc. I still won’t sign the company’s Non-Disclosure Agreement, and although it has relented on many titles, it still insists on this for what it calles its ‘Triple A titles (like Avatar).’

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3 Responses to Avatar gives 3D backwards recognition

  1. Chris says:

    I think one interesting sidenote is the claim that Avatar is a “maximization” of the Blu-ray format as espoused by producer Jon Landau here:
    http://www.highdefdigest.com/news/show/Industry_Trends/3D/Drew_Taylor/Avatar/James_Cameron/Jon_Landau/20th_Century_Fox/High-Def_Digest_Talks_With_Avatar_Producer_Jon_Landau/4591

    While very clearly the specs of Avatar do not even come close to maximizing the average video (40Mbps) or total average (48Mbps) bitrate accorded in the Blu-ray specification, there is very little room for improvement in possible average bitrate for this title due to the long runtime of the feature. Each 1Mbps increment in video bitrate for the 162 minute title would consume approximately 1.25 million bytes or so of additional disc space (with muxing overhead). While the not overwhelming, but quite respectable, average 28.82Mbps bitrate of the video track could possibly be improved by 1-3Mbps, the release is close to the best that can be done before disc space has run dry, so the claim of “maximization” is not invalid.

    This can be construed as a limitation of the BD-50 disc capacity for longer duration films, but I don’t think many will be disappointed by the excellent technical presentation of Avatar on Blu-ray.

  2. Chris says:

    Dang, no edit. My quick correction: each 1Mbps video average bitrate increment for 162 minutes would be 1.25 *billion* (not million) bytes or ~1,250,000,000 bytes.

  3. Stephen Dawson says:

    28.82Mbps is pretty respectable. I reckon that with lossy codecs the returns diminish with each additional linear increase in bitrate, so going from 29 to, say, 35Mbps would yield virtually no differences.

    I haven’t seen Avatar, but given that it is so CGI intensive, it may well be low in grain (CGI stuff is often polished), which should let it compress more efficiently.

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