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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.
Dolby Vision is an end-to-end ecosystem for HDR video, and covers content creation, distribution, and playback. [20] It uses dynamic metadata and is capable of representing luminance levels of up to 10,000 nits. [6] Dolby Vision certification requires displays for content creators to have a peak luminance of at least 1,000 nits. [8]
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.
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]
Competing formats to HDR10 are Dolby Vision and HDR10+ (which do provide dynamic metadata, allowing to preserve the creative intents on each display and on a scene by scene or frame by frame basis), and also HLG (which provides some degree of backward compatibility with SDR). [6]
Dolby Atmos home theaters can be built upon conventional 5.1 and 7.1 layouts. For Dolby Atmos, the nomenclature differs slightly by an additional number at the end, that represents the number of overhead or Dolby Atmos enabled speakers: a 7.1.4 Dolby Atmos system is a conventional 7.1 layout with four overhead or Dolby Atmos enabled speakers.
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HDR on Xbox has a 10-bit color range, or wide color gamut, which uses more colors for a richer, more detailed image. On Xbox, this feature also goes by the name Dolby Vision, which is used by some video apps. Dolby Atmos – The game supports Dolby Atmos surround sound.