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rebecca_gertner
30th July 2013, 22:04
4K Ultra HD Video Optical Disc - HEVC/H.265 is expected to be the standard video codec for the next generation 4K Ultra HD Video Disc and Blu-ray Disc Association (BDA) is already researching the same. Any idea regarding the Bitrates, Profiles, Levels, Tiers, etc. to be used? It is believed that 4K discs may need a storage capacity of approx. 1 TB. Will they utilize the same 405nm laser as Blu-ray or smaller wavelength UV laser? Can the storage capacity be increased by additional layers Only (30-40 layers) so that existing hardware (players/drives) can read those discs?

nevcairiel
30th July 2013, 22:33
With the compression improvements of HEVC, you will never need 1TB of space for a simple movie. You might even manage to put it onto a normal Blu-ray sized disc, although doubling or possibly quadrupling their capacity to 100GB or 200GB would ensure high quality encodes.
Judging from the decisions that lead to the Blu-ray spec, i would wager 4K might use the HEVC High Profile at Level 5.1, which gives you a maximum bitrate of 160Mbps

rebecca_gertner
30th July 2013, 23:22
UHDTV will use 120p Frame Rate and 12-bits per color (Deep Color)
http://en.wikipedia.org/wiki/Rec._2020

Hence, the bit rate would be around 240-300 Mbps (HEVC Level 5.2)

Main 12 and MVC (3D) Profiles are expected to be added to HEVC in Jan 2014.

They are likely to use the same 405 nm blue laser rather than UV laser, else Blu-ray will become UV-ray, however, I doubt if the existing hardware (players/drivers) will be able read those 4K Optical Video Discs. The JCT-VC team is expected to add all the required Profiles to HEVC in Jan next year with 4K going mainstream by FIFA 2014.

Any BDA member in this forum?

Ghitulescu
31st July 2013, 07:47
4K Ultra HD Video Optical Disc - HEVC/H.265 is expected to be the standard video codec for the next generation 4K Ultra HD Video Disc and Blu-ray Disc Association (BDA) is already researching the same. Any idea regarding the Bitrates, Profiles, Levels, Tiers, etc. to be used?
They are the only ones to know this :)
See if they posted minutes or drafts on their site.
All others are simply speculations.

foxyshadis
31st July 2013, 23:10
BD-XL at 100/128 GB (3/4 layers) already exists in the Blu-ray spec and would almost certainly become the standard for 4K video. Prices are as insane now as when it appeared in 2011, $40-50 a disc, but production increases would fix that. Creating a new format unnecessarily would be pointless for companies already staring into the abyss of the end of physical media.