After several leaks of semi-official information in recent months, the Blu-ray Disc Association (BDA) the speculation now put an end to speculation on the topic of the liscensing of an Ultra HD Blu-ray which is prospectively being released later this summer. Here are some of the already published details in a nutshell.
As might be expected, the resolution standards of the Ultra HD Blu-ray is specified with 3840×2160 pixels. In addition, an extended range of colours and higher contrast (high dynamic range / HDR) are supported. The commitment to the classic frame rate of 24 frames per second is omitted, instead, higher frame rates of up to 60 frames per second are permitted. Further worth noting that the new Ultra HD Blu-ray with a 4:2:0 colour sub-sampling works. According to BDA, this decision was made on the one hand for reasons of capacity, on the other hand because it simplifies the compression of the ultra high resolution image data, which is otherwise carried out using the HEVC / H.265 codec.
The storage of 3D material on Ultra HD Blu-ray is currently not provided, so that such content will be available only on normal Blu-rays and in Full HD quality in the future. The manufacturers are new Ultra HD Blu-ray player requires backward compatibility to the old Blu-ray to ensure, however, is precisely the support of 3D playback exempted from this obligation. It remains to be seen whether this option will be available in all devices of the next generation.
When audio specifications will change relatively little. The known formats including the new 3D sound formats (Dolby Atmos, Auro 3D, DTS: X) are supported in the future.
The new Ultra HD Blu-ray will be available in two versions as a dual-layer (66 GB) as well as triple-layer (100GB) to be available. In addition, the already hotly debated for quite some time copy protection standard HDCP 2.2 has now been officially confirmed. If compatibility is not given over the entire signal path from the player to the TV or projector, the image is true, after all, not entirely black, but the resolution now being displayed automatically reduced to conventional Full HD quality.
One called “Digital Bridge” declared function is to enable to copy the contents of the Ultra HD Blu-ray in borders as well as on mobile devices. There is the concrete implementation is currently no further information, the BDA sees the manufacturer in the obligation to submit appropriate solutions.
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