The Blu-ray Disc Association (BDA) announced yesterday that it has finalized the Blu-ray 3D specification.
The Blu-ray 3D specification calls for encoding 3D video using the MPEG4-MVC (Multiview Video Coding) codec, an extension to the H.264 Advanced Video Coding (AVC) profile currently used by every Blu-ray player. MPEG4-MVC compresses both the left and right eye views necessary to simulate depth with an overhead that’s about 50% higher than traditional BD content. Discs encoded with MPEG4-MVC are backwards compatible with existing 2D players; the content would be played in 2D on these devices.
“Throughout this year, movie goers have shown an overwhelming preference for 3D when presented with the option to see a theatrical release in either 3D or 2D,” said Victor Matsuda, chairman, BDA Global Promotions Committee. “We believe this demand for 3D content will carry over into the home now that we have, in Blu-ray Disc, a medium that can deliver a quality Full HD 3D experience to the living room.”
Blu-ray 3D requires compatible players to concurrently process two 60Hz 1080p streams which are then interleaved into a single 120Hz stream via alternate-frame sequencing. A 120Hz LCD is required to display every frame of the 120Hz stream, and LCD shutter glasses are required to reveal the appropriate frame to the appropriate eye to create the impression of depth on the z-axis.
In addition to a new generation of 3D-compatible players, Blu-ray 3D is also being brought to the PlayStation 3 through an eventual firmware update and to PCs through implementations by NVIDIA and AMD, both of whom intend to demo the technology at CES in January.


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