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#1721 | |
Banned
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Feet dragging ensues within the ranks with another physical disc medium. |
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#1722 | |
Senior Member
Oct 2007
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While the BDA has called it an extension when it comes to video improvement I think the change from Blu-ray to Ultra HD Blu-ray could be larger than the change from DVD to Blu-ray. Both increased resolution but Ultra HD Blu-ray is also increasing the bit depth, color space, and dynamic range. That is several major changes for consumer video. |
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#1723 | |
Banned
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#1724 | |
Blu-ray Guru
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Thanks given by: | dublinbluray108 (02-23-2015), FilmFreakosaurus (02-23-2015) |
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#1725 | |
Blu-ray Guru
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#1726 | |
Retired Hollywood Insider
Apr 2007
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The *draw* for Ultra HD Blu-ray for movie enthusiasts seriously interested in the absolute best picture quality yet made available to consumers involves increased bit depth, wider color gamut, higher dynamic range and, depending on the case, increased spatial resolution. WCG and HDR are distance-independent. As to the static resolution (‘4K’) part of the UHD recipe, viewers with normal vision can differentiate ‘consumer 4K’ (i.e. 2160p) vs. 1080p imagery from at least 9ft. away when viewing a 56” sized display….this has been proven not “on paper” but in scientific testing of non-biased observers/viewers by independent research labs not out to sell people televisions, cameras, calibration services, proprietary solutions, whatever - https://forum.blu-ray.com/showthread...ic#post9485052 The 9ft. viewing distance/ 55-56” TV finding being also corroborated (with caveats) by less stringent testing methods from a more typical consumer-type entity which involved 49 observers - http://www.hdtvtest.co.uk/news/4k-re...1312153517.htm |
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#1727 | |
Retired Hollywood Insider
Apr 2007
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#1728 | |
Retired Hollywood Insider
Apr 2007
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It’s a complex topic. In the working group meetings for the development of the Rec BT. 2020, constant luminance had support because objective analysis showed more accurate retention of luminance information (in other words less crosstalk, i.e. the Y signal is less infected with chrominance information), plus, expectations for better compression efficiency in transmission and delivery….and the thought that perhaps someday it could even allow 4:1:0. On the other hand, with the traditional non-constant luminance (like in BT. 709), that approach yields similar results with color mixing between RGB and YCbCr, in addition, everyone in the production community is already familiar with it in HD TV practice, so it’s a comfortable carry over to UHD (after changing the coefficient values due to the difference in RGB primaries between 709 and 2020). If you’d like further detail, see the paper by Choi et al. - http://www.researchgate.net/publicat...nals_for_UHDTV Since I’m published, I’ve utilized ResearchGate ^ for scientific journals of which I don’t have a current subscription. I think you can get a free copy from there if one has authored something in a peer reviewed journal; otherwise, perhaps only a quick registration even if one is not (published), but not sure on the later for now I simply log in there. Check it out sometime ![]() P.S. The paper is published in SID 2013 Digest, if you happen to get that journal. Last edited by Penton-Man; 02-23-2015 at 06:00 PM. Reason: added a P.S. |
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#1729 |
Special Member
Jan 2013
Massachusetts
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Does anybody know if 4k Blu-ray players will be able to play DVDs?
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#1730 |
Banned
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That provision is optional in the Ultra HD Blu-ray bylaws. Since it takes a separate laser diode and we are two generations past, it's up to each manufacturer to decide if they want to add DVD support or not to their UHD players.
Last edited by FilmFreakosaurus; 02-23-2015 at 11:53 PM. |
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#1731 |
Blu-ray Knight
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Two generations past and yet 2/3 of all disc sales. Does not compute.
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#1732 |
Banned
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#1733 | |
Blu-ray Samurai
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http://www.thedigitalbits.com/column...ts/010615_1530 "As to manufacturer support for the new Blu-Ray format, during CES Panasonic unveiled an Ultra HD Blu-Ray player, which will be available this year. Matsuda said supported players would talk to TVs with HDMI 1.2 or HDMI 2.0. Additionally, he said Utra HD Blu-Ray players must be backward compatible, able to play a standard Blu-Ray or a DVD." http://www.hollywoodreporter.com/beh...blu-ray-761728 No market for UBD player without backward compatibility to DVD, internet connected for UHD streaming. They may even have Netflix Seal of Approval, as will displays. Expect Netflix, Amazon and possibly M-Go apps for UHD streaming. Also, most likely, SeeQvault (digital bridge) SD card slot. The studios want this, because they believe it will reduce piracy. This is next gen Ultraviolet. No code required. Last edited by raygendreau; 02-24-2015 at 05:32 AM. |
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#1734 | |
Banned
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It's good that at least initially some companies are talking about leaving DVD support included. It's still an optional provision. |
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#1735 |
Special Member
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I'm intrigued about this 'digital bridge', ideally for me it will allow me to transfer trailers and TV spots to another device. At present I have no real need to transfer the entire film, I never look at the ultra violet copies once I have entered the code. I can't see any reason why this couldn't be a feature from launch but I expect it to be in another profile 7.0 most likely. Speaking of profiles do you think Ultra HD Blu-ray will be profile 6.0.
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#1736 |
Active Member
Aug 2014
Reading, PA
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4k Blu-rays coming later then expected, or Panasonic coming late in the game?
http://www.whathifi.com/news/panason...er-spring-2016 |
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#1737 | |
Blu-ray Samurai
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The use of the word must means mandatory, not optional. |
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#1738 | |
Banned
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#1739 | |
Blu-ray Samurai
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"Integrating SeeQVault in the U.S. market, reliant on rented cable and satellite set-top boxes from protective service suppliers, will be more of a challenge that the largely over-the-air (OTA) TV market in Japan, however. NSM executives are expecting the major adoption of SeeQVault in the U.S. will be on premium Ultra HD Blu-ray decks." http://www.twice.com/seeqvault-sd-ca...-blu-ray/55722 |
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#1740 |
Blu-ray Ninja
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If this comes about at the same rate as UV and the CFF then it could be many years, if ever, before digital bridge hardware and software is available. Last I looked there was not any UV with CFF compatible hardware even tho the UV site has been saying "Coming Soon" for three years.
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Tags |
4k blu-ray, ultra hd blu-ray |
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