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Dolby Vision is a set of technologies developed by Dolby Laboratories for high dynamic range (HDR) video. [1] [2] [3] It covers content creation, distribution, and playback.[1] [4] [5] [6] It includes dynamic metadata that define the aspect ratio and adjust the picture based on a display's capabilities on a per-shot or even per-frame basis, optimizing the presentation.
It was developed by Dolby [6] and standardized in 2014 by SMPTE [1] and also in 2016 by ITU in Rec. 2100. [ 7 ] [ 8 ] ITU specifies the use of PQ or HLG as transfer functions for HDR-TV. [ 7 ] PQ is the basis of HDR video formats (such as Dolby Vision , [ 2 ] [ 9 ] HDR10 [ 10 ] and HDR10+ [ 11 ] ) and is also used for HDR still picture formats.
There are a number of different HDR formats, including HDR10, HDR10+, Dolby Vision, and HLG. HDR10 is the most common format and is supported by all HDR TVs. Dolby Vision is a more advanced format that offers some additional features, such as scene-by-scene mastering. HDR10+ is a newer format that is similar to Dolby Vision but is royalty-free.
Christopher Nolan is a British-American filmmaker known for using aesthetics, themes and cinematic techniques that are recognisable in his work. Regarded as an auteur filmmaker, Nolan is partial to elliptical editing , documentary -style lighting, hand-held camera work, natural settings, and real filming locations over studio work.
Dolby Vision metadata can be carried via HDMI interface versions 1.4b and above. [44] It also supports IPTPQc2 color space, that is similar to ICtCp. Dolby Vision IQ is an update designed to optimize Dolby Vision content according to the brightness of the room. [45]
HDR10+ is an alternative to Dolby Vision, which also uses dynamic metadata. [3] HDR10+ is the default variant of dynamic metadata as part of the HDMI 2.1 standard. [4] HDR10+ Adaptive is an update designed to optimize HDR10+ content according to the ambient light. [5]
On July 8, 2006, DirecTV announced an upgrade to version 6.3 of the TiVo software for the HR10-250, the first major upgrade since this unit was released. [5] This upgrade includes features such as program grouping (folders), a much faster on-screen guide, and new sorting features.
HDR10 is supported by a wide variety of companies, which include monitor and TV manufacturers such as Dell, LG, Samsung, Sharp, VU, Sony, and Vizio, [8] [9] as well as Sony Interactive Entertainment, Microsoft and Apple which support HDR10 on their PlayStation 4, Xbox One video game console and Apple TV platforms, respectively.