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本帖最后由 bluejd 于 2016-4-13 00:20 编辑
这点毫无疑问,UHD蓝光规格写的相当清晰。
Ultra HD Blu-ray支持三种HDR标准,其中HDR10是播放器强制执行的,Dolby Vision与Philips HDR是播放器和碟片可选的。
参考Ultra HD Blu-ray白皮书 http://www.blu-raydisc.com/assets/Downloadablefile/BD-ROM_Part3_V3.0_WhitePaper_150724.pdf
Supported HDR technologies
This format defines three types of HDR video formats: BDMV HDR, Dolby Vision and Philips HDR. TheBDMV HDR is the HDR video format which is mandatory for player in this specification. The DolbyVision and Philips HDR are the optional HDR video technologies for players and discs. The DolbyVision and Philips HDR technologies use metadata that has also been submitted to the SMPTE forconsideration.
The BDMV HDR format is characterized by the following properties:
- BDMV HDR video stream is an HEVC video stream (10bit, YCbCr 4:2:0).
- color primaries: BT.2020 with non-constant luminance
- EOTF(Electro-Optical Transfer Function): SMPTE 2084
- Metadata: SMPTE 2086(Mastering display color volume) metadata, Maximum Content Light Level
- (MaxCLL), and Maximum Frame-Average Light Level (MaxFALL)
The Dolby Vision video stream is composed of a BDMV HDR video stream and a Dolby Vision enhancement layer video stream. The enhancement layer is an HEVC video stream with embedded Dolby Vision metadata. The Dolby Vision is characterized by the followings:
- color primaries: BT.2020 with non-constant luminance
- EOTF(Electro-Optical Transfer Function): SMPTE 2084
- Bit depth: 12bit (combination of BDMV HDR video stream and Dolby Vision enhancement layer)
- Enhancement layer video stream: 1920x1080 resolution, same frame rate with the BDMV HDR
- video stream, 100Mbps or lower together with the BDMV HDR video stream
The Philips HDR video stream is a BDMV HDR video stream with Philips HDR SEI messages.
The Philips HDR SEI messages is a metadata to control down-conversion of the dynamic range of the BDMV HDR video stream to a dynamic range of the connected display.
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