2020 that ITU has recommended for UHD video. 709 (the standard for HD and what is used today for all HD Blu-ray Discs) or the extremely wide Rec. Video will be recorded with 10-bit depth (i.e., 10-bits for each of the 3 primary colors) as compared to 8-bit depth used for virtually all consumer HD video sources today, include existing Blu-ray Discs. For comparison, the current HD Blu-ray disc do not support 1080p at 50Hz or 60 Hz for the recordings. The supported refresh rates vary between 23.976 Hz and 60 Hz. The supported resolutions will be 1080p (i.e., HD) and 2160p (UHD, sometimes referred to as 4K). Thus the new Ultra HD Blu-ray discs will be recorded using the relatively new HEVC coding (ITU H.265) which is more efficient than any of the 3 coding types supported by the current generation of Blu-ray Discs. That white paper from the BDA lists the following formats for Standard Dynamic Range (SDR) and for High Dynamic Range (HDR) video:Īlso all of these format can be used with any of the following refresh rates: Note that the new discs will support both 4K/UHD video (i.e., 2160p: 3840 x 2160) as well as enhanced 1080p HD video (enhanced beyond what is possible to record on the existing version of HD Blu-ray Discs). The BDA recently released a white paper on the HEVC encoding to be used for Ultra HD Blu discs.
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