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Author
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Topic: 3-D Blu-ray coming. Finally.
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Julio Roberto
Jedi Master Film Handler
Posts: 938
From: Madrid, Madrid, Spain
Registered: Oct 2008
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posted 12-18-2009 08:18 AM
http://www.blu-ray.com/news/?id=3924
Dec 17
quote:
The Blu-ray Disc Association (BDA) today announced the finalization and release of the “Blu-ray 3D™” specification. It leverages the technical advantages of the BD format to deliver “unmatched picture quality” as well as uniformity and compatibility across the full range of Blu-ray 3D products, both hardware and software. The specification is also designed to allow the PS3 to play back Blu-ray 3D content in 3-D.
Notably, the specification allows every player and movie supporting it to deliver full HD 1080p resolution to each eye. Moreover, the specification is display agnostic, meaning that Blu-ray 3D products will deliver the 3-D image to any compatible 3-D display, regardless of whether that display uses LCD, plasma or other technology and regardless of what 3-D technology the display uses to deliver the image to the viewer's eyes.
Regarding compatibility, the specification supports playback of 2-D discs in forthcoming 3-D players and can enable 2-D playback of Blu-ray 3D discs on the installed base of Blu-ray Disc players currently in homes around the world.
The Blu-ray 3D specification calls for encoding 3-D video using the Multiview Video Coding (MVC) codec, an extension to the ITU-T H.264 Advanced Video Coding (AVC) codec currently supported by all Blu-ray Disc players. MPEG4-MVC compresses both left and right eye views with a typical 50% overhead compared to equivalent 2-D content, and can provide full 1080p resolution backward compatibility with current 2-D Blu-ray Disc players. The specification also incorporates enhanced graphic features for 3-D. These features provide a new experience for users, enabling navigation using 3-D graphic menus and displaying 3-D subtitles positioned in 3-D video.
The completed specification will be available shortly and provides individual manufacturers and content providers with the technical information and guidelines necessary to develop, announce and bring products to market pursuant to their own internal planning cycles and timetables.
“Throughout this year, movie goers have shown an overwhelming preference for 3-D when presented with the option to see a theatrical release in either 3-D or 2-D,” said Victor Matsuda, chairman, BDA Global Promotions Committee. “We believe this demand for 3-D content will carry over into the home now that we have, in Blu-ray Disc, a medium that can deliver a quality Full HD 3-D experience to the living room.”
“From a technological perspective, it is simply the best available platform for bringing 3D into the home,” said Benn Carr, chairman, BDA 3D Task Force. “The disc capacity and bit rates Blu-ray Disc provides enable us to deliver 3D in Full HD 1080p high definition resolution.”
“In 2009 we saw Blu-ray firmly establish itself as the most rapidly adopted packaged media format ever introduced,” said Matsuda. “We think the broad and rapid acceptance Blu-ray Disc already enjoys with consumers will be a factor in accelerating the uptake of 3-D in the home. In the meantime, existing players and libraries can continue to be fully enjoyed as consumers consider extending into 3-D home entertainment.”
This pbbly means that by next Xmas we will be able to start buying the first "fully compatible" 3-D TV's and 3-D blu-ray players. Obviously, Hollywood will be there with at least a few 3-D titles to kickstart the thing.
I leave up to you to decide about Hollywood's claim that "Digital 3-D is something that can not be experienced at home and will drive people to theatres that buy into the technology ... blah blah"
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Julio Roberto
Jedi Master Film Handler
Posts: 938
From: Madrid, Madrid, Spain
Registered: Oct 2008
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posted 12-19-2009 08:57 AM
quote: Claude S. Ayakawa
Watching recent 3-D movies in Real D and Dolby 3-D in a theatre has not been too bad because the picture is not as dark as they were when I saw earlier movies in the format. One will still need to view 3-D movies with glasses using the Blu-Ray/HDTV system at home. Are the glasses going to be dark like the polaroid glasses used now in theatres or will they be brighter using a new optical system
It's all up to the TV that you buy. All "new" upcoming 3D TV's will take the 3-D from the blu-ray and use whatever method they prefer to show it. Currently, the two methods most widely used and the ones foreseen to be most sucessful are equivalent to theaters using the XpanD 3D systems (very popular in digital theatres outside the USA) and the other system is equivalent/similar to theatres using Digital Imax 3D systems or Sony 3D systems.
The first system, called "active LC shutter glasses" cuts the apparent brightness of the perceived image from the TV in over half. The lenses on the glasses look almost the same as RealD glasses ("light gray" in color) but when "connected" (they use batteries) they start to "flicker" between total black and light grey.
The second system doesn't significantly reduce the apparent brightness of the image you see on the screen without glasses, due to the light from an LCD screen being already polarized even if for 2D.
But with this system the resolution is cut by half, so in order to be "good", these TV's would need to have a resolution of 1920x2160 instead of 1920x1080.
It is concibable to manufacture a TV set that would use a third system like Infitec filter system (Dolby) which would be similar to the last one explained (would cut resolution by half but pretty much keep apparent brightness compared to watching the TV w/o glasses), but no such TV has been prototyped yet and would pbbly not be able to compete in pricing with the other two options.
The active shutter glasses option is particularly cheap as most of the TV's sold today are "already" 3D w/o (basically) any modifications, as long as they can refresh a 1080p fast enough. In other words, 120hz and above TV sets, which abound cheaply in the current marketplace all the way up to 600hz. Just add a pair of $50 active glasses (which, of course, they will sell at firt for $100) and voilá .. instant 3D. Almost (you would need HDMI 1.4, a 1-cent IR LED to sync, etc, but little more). So the cost is minimal.
For the second system, the cost of adding a filter is not high and the (passive) polarized glasses are dirt cheap, but it would need to double the horizontal resolution and that commands a certain increase in the selling price of the TV set.
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Older machines will still be able to play 3-D software and get 2-D results because it is backward compatible.
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