High-dynamic-range television (HDR-TV) is a technology that useshigh dynamic range (HDR) to improve the quality of display signals. It is contrasted with the retroactively-namedstandard dynamic range (SDR). HDR changes the way the luminance and colors of videos and images are represented in the signal and allows brighter and more detailed highlight representation, darker and more detailed shadows, and more intense colors.[1][2]
HDR allows compatible displays to receive a higher-quality image source. It does not improve a display's intrinsic properties (brightness, contrast, and color capabilities). Not all HDR displays have the same capabilities, and HDR content will look different depending on the display used, and the standards specify the required conversion depending on display capabilities.[3]
HDR-TV is a part ofHDR imaging, an end-to-end process of increasing the dynamic range of images and videos from their capture and creation to their storage, distribution and display. Often, HDR is used withwide color gamut (WCG) technology. WCG increases thegamut and number of distinctcolors available. HDR increases the range ofluminance available for each color. HDR and WCG are separable but complementary technologies. Standards-compliant HDR display also has WCG capabilities, as mandated byRec. 2100 and other common HDR specifications.
The use of HDR in television sets began in the late 2010s. By 2020, most high-end and mid-range TVs supported HDR, and some budget models did as well. HDR-TVs are now the standard for most new televisions.
There are a number of different HDR formats, includingHDR10,HDR10+,Dolby Vision, andHLG. 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. HLG is a broadcast HDR format that is used by some TV broadcasters.
Before HDR, improvements in display fidelity were typically achieved by increasing the pixel quantity, density (resolution) and the display's frame rate. By contrast, HDR improves the perceived fidelity of the existing individual pixels.[4] Standard dynamic range (SDR) is still based on and limited by the characteristics of oldercathode-ray tubes (CRTs), despite the huge advances in screen and display technologies since CRT's obsolescence.[1]
SDR formats are able to represent a maximumluminance level of around 100nits. For HDR, this number increases to around 1,000–10,000 nits.[1][5] HDR can represent darker black levels[2] and more saturated colors.[1] The most common SDR formats are limited to theRec. 709/sRGB gamut, while common HDR formats use Rec. 2100, which is a wide color gamut (WCG).[1][6]
In practice, HDR is not always used at its limits. HDR contents are often limited to a peak brightness of 1,000 or 4,000 nits andP3-D65 colors, even if they are stored in formats capable of more.[7][8] Content creators can choose to what extent they make use of HDR capabilities. They can constrain themselves to the limits of SDR even if the content is delivered in an HDR format.[9]
The benefits of HDR depend on the display capabilities, which vary. No current display is able to reproduce the maximal range of brightness and colors that can be represented in HDR formats.
The highlights—the brightest parts of an image—can be brighter, more colorful, and more detailed.[2] The larger capacity for brightness can be used to increase the brightness of small areas without increasing the overall image's brightness, resulting in, for example, bright reflections from shiny objects, bright stars in a dark night scene, and bright and colorful light-emissive objects (e.g. fire, and sunset).[2][1][9]
The shadows or lowlights—the darkest parts of an image—can be darker and more detailed.[2]
The colorful parts of the image can be even more colorful if a WCG is used.[1]
The color dynamism and wider range of colors frequently attributed to HDR video is actually a consequence of a WCG. This has become a point of significant confusion among consumers, whereby HDR and WCG are either confused for each other or treated as interchangeable. While HDR displays typically have WCGs and displays with WCGs are usually capable of HDR, one does not imply the other; there are SDR displays with WCGs. Some HDR standards specify WCG as a prerequisite of compliance. Regardless, when a WCG is available on an HDR display, the image as a whole can be more colorful due to the wider range of colors.[1]
More subjective, practical benefits of HDR video include more realistic luminance variation between scenes (such as sunlit, indoor, and night scenes), better surface material identification, and better in-depth perception, even with 2D imagery.[2]
When a display’s capabilities are insufficient to reproduce all the brightness, contrast and colors that are represented in the HDR content, the image needs to be adjusted to fit the display’s capabilities. Some HDR formats (such as Dolby Vision and HDR10+) allow the content creator to choose how the adjustment will be done.[6] Other HDR formats, such as HDR10 andhybrid log–gamma (HLG), do not offer this possibility, so the content creator's intents are not ensured to be preserved on less capable displays.[10]
For optimal quality, standards require video to be created and viewed in a relatively dark environment.[11][12] Dolby Vision IQ and HDR10+ Adaptive adjust the content according to the ambient light.[13][14]
Since 2014, multiple HDR formats have emerged includingHDR10,HDR10+,Dolby Vision, and HLG.[6][15] Some formats are royalty-free and others require a license. The formats vary in their capabilities.
Dolby Vision and HDR10+ include dynamic metadata while HDR10 and HLG do not.[6] The dynamic metadata are used to improve image quality on limited displays that are not capable of reproducing an HDR video to its fullest intended extent. Dynamic metadata allows content creators to control and choose the way the image is adjusted.[16]
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The HDR10 Media Profile, more commonly known as HDR10, is an open HDR standard announced on 27 August 2015 by theConsumer Technology Association.[17] It is the most widespread of the HDR formats,[18] and is not backward compatible with SDR displays. It is technically limited to a maximum peak brightness of 10,000 nits; however, HDR10 content is commonly mastered with a peak brightness between 1000 and 4000 nits.[7]
HDR10 lacks dynamic metadata.[19] On HDR10 displays that have lower color volume than the HDR10 content (such as lower peak brightness capability), the HDR10 metadata provides information to help the display adjust to the video.[6] The metadata is static and constant with respect to each individual video and does not inform the display exactly how the content should be adjusted. The interaction between display capabilities, video metadata, and the ultimate output (i.e. the presentation of the video) is mediated by the display, with the result that the original producer's intent may not be preserved.[10]
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]
HDR10+, also known as HDR10 Plus, is an HDR video format announced on 20 April 2017.[21] It is the same as HDR10 but with the addition of a system of dynamic metadata developed by Samsung.[22][23][24] It is free to use for content creators and has a maximum $10,000 annual license for some manufacturers.[25] It has been positioned as an alternative to Dolby Vision without the same expenses.[18]
HLG format is an HDR format that can be used for video and still images.[26][27] It uses the HLG transfer function,Rec. 2020 color primaries, and abit depth of 10 bits.[28] The format is backwards compatible with SDRUHDTV, but not with older SDR displays that do not implement the Rec. 2020 color standards.[29][2] It does not use metadata and is royalty-free.
PQ10, sometimes referred to as the PQ format, is an HDR format that can be used for video and still images.[30][31] It is the same as the HDR10 format, except it lacks metadata.[30] It uses theperceptual quantizer (PQ) transfer function, Rec. 2020 color primaries and a bit depth of 10 bits.[29]
HDR Vivid is an HDR format developed by the China Ultra HD Video Alliance (CUVA) and released in March 2021.[32][33][34] It uses dynamic metadata standardized in CUVA 005-2020.[35][36]
| HDR10 | HDR10+ | Dolby Vision | HLG | ||
|---|---|---|---|---|---|
| Developed by | CTA | Samsung | Dolby | NHK andBBC | |
| Year | 2015 | 2017 | 2014 | 2015 | |
| Cost | Free | Free (for content company) Yearly license (for manufacturer)[44] | Proprietary | Free | |
| Color space | |||||
| Transfer function | PQ | PQ | HLG | ||
| Bit Depth | 10 bit | 10 bit (or more) | 10 bit (or 12 bit using FEL)[note 1] | 10 bit | |
| Peakluminance | Technical limit | 10,000 nits | 10,000 nits | 10,000 nits | Variable |
| Contents | No rules 1,000 - 4,000 nits (common)[7] | No rules 1,000 - 4,000 nits (common)[7] | (At least 1,000 nits[47]) 4,000 nits common[7] | 1,000 nits common[48][5] | |
| Color primaries | Technical limit | Rec. 2020 | Rec. 2020 | Rec. 2020 | Rec. 2020 |
| Contents | P3-D65 (common)[6] | P3-D65 (common)[6] | At least P3-D65[47] | P3-D65 (common)[6] | |
| Other characteristics | |||||
| Metadata |
|
|
| None | |
| Backward compatibility | None |
| Dependent on profile and compatibility level:
|
| |
| Notes | ThePQ10 format is same as HDR10 without the metadata.[28] | Technical characteristics of Dolby Vision depend on the profile used, but all profiles support HDR with Dolby Vision dynamic metadata.[45] | HLG backward compatibility is acceptable for SDR UHDTV displays that can interpret the BT.2020 colour space. It is not intended for traditional SDR displays that can only interpret BT.709 colorimetry.[29][2] | ||
| Sources | [19][7][6] | [49][50][7][6] | [45][51][47][6][52][7][53] | [5][29][48][6] | |
TV sets with enhanced dynamic range and upscaling of existing SDR/LDR video/broadcast content with reversetone mapping have been anticipated since the early 2000s.[54][55] In 2016, HDR conversion of SDR video was released to market asSamsung'sHDR+ (inLCD TV sets)[56] and Technicolor SA's HDR Intelligent Tone Management.[57]
As of 2018, high-end consumer-grade HDR displays can achieve 1,000 cd/m2 of luminance, at least for a short duration or over a small portion of the screen, compared to 250-300 cd/m2 for a typical SDR display.[58]
Video interfaces that support at least one HDR Format includeHDMI 2.0a, which was released in April 2015 andDisplayPort 1.4, which was released in March 2016.[59][60] On 12 December 2016, HDMI announced that HLG support had been added to the HDMI 2.0b standard.[61][62][63]HDMI 2.1 was officially announced on 4 January 2017, and added support for Dynamic HDR, which is dynamic metadata that supports changes scene-by-scene or frame-by-frame.[64][65]
As of 2020, no display is capable of rendering the full range of brightness and color of HDR formats.[28] A display is called anHDR display if it can accept HDR content and map it to its display characteristics,[28] so the HDR logo only provides information about content compatibility and not display capability.
Displays that use global dimming, such as mostedge-lit LED displays, cannot display the advanced contrast of HDR content. Some displays implement local dimming technologies, such asOLED and full-arrayLED-backlighting, to more properly display advanced contrast.[66]
 | This section needs to beupdated. The reason given is: criteria changed for the new version (DisplayHDR v1.1). Please help update this article to reflect recent events or newly available information. Last update: September 2019(September 2021) |
The DisplayHDR standard fromVESA is an attempt to make the differences in HDR specifications easier for consumers to understand. The standard is mainly used in computer monitors and laptops. VESA defines a set of HDR levels; all of them must support HDR10, but not all are required to support 10-bit displays.[67] DisplayHDR is not an HDR format, but a tool to verify HDR formats and their performance on a given monitor. The most recent standard is DisplayHDR 1400, which was introduced in September 2019, with monitors supporting it released in 2020.[68][69] DisplayHDR 1000 and DisplayHDR 1400 are primarily used in professional work like video editing. Monitors with DisplayHDR 500 or DisplayHDR 600 certification provide a noticeable improvement over SDR displays and are more often used for general computing and gaming.[70]
| Minimum peak luminance (Brightness in cd/m2) | Range of color (Color gamut) | Minimum | Typical dimming technology | Maximum black-level luminance (Brightness in cd/m2) | Maximum backlight adjustment latency (Number of video frames) | |
|---|---|---|---|---|---|---|
| DisplayHDR 400 | 400 | sRGB | 8 bit (24-bit) | Screen-level | 0.4 | 8 |
| DisplayHDR 500 | 500 | WCG* | 10-bit (30-bit) | Zone-level | 0.1 | 8 |
| DisplayHDR 600 | 600 | WCG* | Zone-level | 0.1 | 8 | |
| DisplayHDR 1000 | 1000 | WCG* | Zone-level | 0.05 | 8 | |
| DisplayHDR 1400 | 1400 | WCG* | Zone-level | 0.02 | 8 | |
| DisplayHDR 400 True Black | 400 | WCG | Pixel-level | 0.0005 | 2 | |
| DisplayHDR 500 True Black | 500 | WCG | Pixel-level | 0.0005 | 2 | |
| DisplayHDR 600 True Black | 600 | WCG | Pixel-level | 0.0005 | 2 |
UHD Alliance certifications:
HDR is mainly achieved by the use of PQ or HLGtransfer function.[1][5] WCGs are also commonly used along HDR up to Rec. 2020color primaries.[1] A bit depth of 10 or 12 bits is used to not seebanding across the extended brightness range. In some cases, additionalmetadata are used to handle the variety in displaysbrightness,contrast and colors. HDR video is defined in Rec. 2100.[5]
Rec. 2100 is a technical recommendation by ITU-R for production and distribution of HDR content using 1080p or UHD resolution, 10-bit or 12-bit color, HLG or PQ transfer functions, full or limited range, the Rec. 2020 wide color gamut andYCBCR orICTCP ascolor space.[11][73]
SDR uses agamma curve transfer function that is based on CRT characteristics and is used to represent luminance levels up to around 100 nits.[1] HDR uses newly developed PQ or HLG transfer functions instead of the traditional gamma curve.[1] If the gamma curve had been extended to 10,000 nits, it would have required a bit-depth of 15 bits to avoid banding.[74]
HDR transfer functions:
SDR for HD video uses a system chromaticity (chromaticity ofcolor primaries andwhite point) specified inRec. 709 (same assRGB).[86] SDR for SD used many different primaries, as said in BT.601, SMPTE 170M and BT.470.
HDR is commonly associated to a WCG (a systemchromaticity wider thanBT.709).Rec. 2100 (HDR-TV) uses the same system chromaticity that is used inRec. 2020 (UHDTV).[5][87] HDR formats such as HDR10, HDR10+, Dolby Vision and HLG also use Rec. 2020 chromaticities.
HDR contents are commonly graded on a P3-D65 display.[6][8]
| Color space | Chromaticity coordinate (CIE, 1931) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Primary colors | White point | ||||||||
| Red | Green | Blue | |||||||
| xR | yR | xG | yG | xB | yB | Name | xW | yW | |
| Rec. 709[86] | 0.64 | 0.33 | 0.30 | 0.60 | 0.15 | 0.06 | D65 | 0.3127 | 0.3290 |
| sRGB | |||||||||
| DCI-P3[88][89] | 0.680 | 0.320 | 0.265 | 0.690 | 0.150 | 0.060 | P3-D65 (Display) | 0.3127 | 0.3290 |
| P3-DCI (Theater) | 0.314 | 0.351 | |||||||
| P3-D60 (ACES Cinema) | 0.32168 | 0.33767 | |||||||
| Rec. 2020[87] | 0.708 | 0.292 | 0.170 | 0.797 | 0.131 | 0.046 | D65 | 0.3127 | 0.3290 |
| Rec. 2100[5] | |||||||||
Because of the increaseddynamic range, HDR contents need to use more bit depth than SDR to avoid banding. While SDR uses a bit depth of 8 or 10 bits,[86] HDR uses 10 or 12 bits,[5] which when combined with the use of more efficient transfer function like PQ or HLG, is enough to avoid banding.[90][91]
Rec. 2100 specifies the use of theRGB, YCbCr or ICTCP signal formats for HDR-TV.[5]
ICTCP is a color representation designed by Dolby for HDR and wide color gamut (WCG)[92] and standardized in Rec. 2100.[5]
IPTPQc2 with reshaping is a proprietary format by Dolby and is similar to ICTCP. It is used by Dolby Vision profile 5.[45]
Coding-independent code points (CICP) are used to signal the transfer function, color primaries and matrix coefficients.[93] It is defined in both ITU-T H.273 and ISO/IEC 23091-2.[93] It is used by multiple codecs including PNG,AVC,HEVC andAVIF. Common combinations of H.273 parameters are summarized in ITU-T Series H Supplement 19.[94]
| Code point value | Meaning | |
|---|---|---|
| Transfer function | 1, 6, 14, 15 | SDR's gamma curve |
| 16 | PQ | |
| 18 | HLG | |
| Color primaries | 1 | Rec. 709 primaries |
| 9 | Rec. 2020 primaries Rec. 2100 primaries | |
| Matrix coefficients | 0 | R'G'B' |
| 1 | Y'CbCr (for Rec. 709) | |
| 9 | Y'CbCr (for Rec. 2020) Y'CbCr (for Rec. 2100) | |
| 14 | ICtCp |
Static HDR metadata give information about the whole video.
The metadata do not describe how the HDR content should be adapted to HDR consumer displays that have lower color volume (i.e. peak brightness, contrast and color gamut) than the content.[10][96]
Dynamic metadata are specific for each frame or each scene of the video.
Dynamic metadata of Dolby Vision, HDR10+ and SMPTE ST 2094 describe what color volume transform should be applied to contents that are shown on displays that have different color volume from the mastering display. It is optimized for each scene and each display. It allows for the creative intents to be preserved even on consumer displays that have limited color volume.
SMPTE ST 2094 or Dynamic Metadata for Color Volume Transform (DMCVT) is a standard for dynamic metadata published bySMPTE in 2016 as six parts.[24] It is carried in HEVC SEI, ETSI TS 103 433, CTA 861-G.[97] Core components of DMCVT are defined in SMPTE ST 2094-1. DMCVT includes four applications:
ETSI TS 103 572 is a technical specification published in October 2020 byETSI for HDR signaling and carriage of ST 2094–10 (Dolby Vision) metadata.[98]
HDR Vivid uses dynamic metadata standardized in CUVA 005-2020.[35][36]
Some Dolby Vision profiles use a dual-layer video composed of a base layer and an enhancement layer.[45][46] Depending on the Dolby Vision profile (or compatibility level), the base layer can be backward compatible with SDR, HDR10, HLG,UHD Blu-ray or no other format in the most efficient IPTPQc2 color space, which uses full range and reshaping.[45]
ETSI GS CCM 001 describes a Compound Content Management functionality for a dual-layer HDR system, including MMR (multivariate multiple regression) and NLQ (non-linear quantization).[46]
| This section needs to beupdated. Please help update this article to reflect recent events or newly available information.(December 2021) |
UHD Phase A is a set of guidelines from theUltra HD Forum for the distribution of SDR and HDR content using Full HD 1080p and 4K UHD resolutions. It requires a color depth of 10 bits per sample, a color gamut of Rec. 709 or Rec. 2020, aframe rate of up to 60 fps, a display resolution of1080p or 2160p and either standard dynamic range (SDR) or high dynamic range that uses HLG or PQ transfer functions.[99] UHD Phase A defines HDR as having adynamic range of at least 13 stops (213=8192:1) and WCG as a color gamut that is wider thanRec. 709.[99]
UHD Phase B will add support to 120 fps (and 120/1.001 fps), 12 bit PQ in HEVC Main12 (that will be enough for 0.0001 to 10000 nits),Dolby AC-4 andMPEG-H 3D Audio, IMAX sound in DTS:X (with 2 LFE). It will also add ITU's ICtCp and CRI.[100]
The following image formats are compatible with HDR (Rec. 2100color space, PQ and HLGtransfer functions, Rec. 2020 color primaries):
Other image formats, such asJPEG,JPEG 2000,PNG,WebP, do not support HDR by default. They could support it by the use of theICC profile,[103][104] but existing applications usually do not take into account the absolute luminance value defined in ICC profiles.[104]W3C added HDR support to PNG using cICP, abandoning ICC PQ profile method.[105][106]
ISO 21496-1 defines a generic way to add HDR information to SDR formats. A layer ofgain map records the luminance ratio between HDR source and its tone-mapped SDR rendering, so that the HDR source signal can be (partially) reconstructed from the SDR layer and this map. Software that does not support the gain map would show the fallback SDR rendering.[107] ISO 21496-1 is a unification of AdobeGain Map, also known as GoogleUltra HDR and SamsungSuper HDR, and AppleGain Map. Apple refers to ISO 21496-1 asAdaptive HDR.
Apple:iPhone 12 and later support the aforementionedgain map HDR technique for still images.[108]iOS 18,iPadOS 18, andmacOS 15 support ISO 21496-1, marketed as Adaptive HDR.[109]
Canon:EOS-1D X Mark III andEOS R5 are able to capture still images in the Rec. 2100 color space by using the PQ transfer function, the HEIC format (HEVC codec in HEIF file format), the Rec. 2020 color primaries, a bit depth of 10 bit and a 4:2:2YCbCr subsampling.[110][111][112][113][81][excessive citations] The captured HDR pictures can be viewed in HDR by connecting the camera to an HDR display with an HDMI cable.[113] Captured HDR pictures can also be converted to SDRJPEG (sRGB color space) and then viewed on any standard display.[113] Canon refers to those SDR pictures as "HDR PQ-like JPEG".[114] Canon'sDigital Photo Professional software is able to show the captured HDR pictures in HDR on HDR displays or in SDR on SDR displays.[113][115] It is also able to convert the HDR PQ to SDR sRGB JPEG.[116]
Google:Android 14 and later support the aforementionedUltra HDR gain map technique for still images. This is marketed bySamsung asSuper HDR.Android 15 and later simultaneously encodes Ultra HDR and ISO 21496-1.Chromium based browsers support Ultra HDR and ISO 21496-1.[109]
Panasonic: Panasonic's S-series cameras (including Lumix S1, S1R, S1H and S5) can capture photos in HDR using the HLG transfer function and output them in an HSP file format.[117][27][83] The captured HDR pictures can be viewed in HDR by connecting the camera to an HLG-compliant display with an HDMI cable.[117][83] A plug-in allowing the editing of HLG stills (HSP) in Photoshop CC has been released by Panasonic.[118][119] The company also released a plug-in for displaying thumbnails of those HDR images on a PC (for Windows Explorer and macOS Finder).[119]
Qualcomm:Snapdragon 888 mobileSoC allows the capture of 10-bit HDR HEIF still photos.[120][121]
Sony:Sony α7S III andα1 cameras can capture HDR photos in the Rec. 2100 color space with the HLG transfer function, the HEIF format, Rec. 2020 color primaries, a bit depth of 10 bit and a 4:2:2 or 4:2:0subsampling.[84][122][123][124] The captured HDR pictures can be viewed in HDR by connecting the camera to an HLG-compliant display with an HDMI cable.[124]
Others:
Work is in progress atW3C to make Web compatible with HDR,[127] which includes HDR capabilities detection[128] and HDR in CSS.[129] Chrome and Safari mostly support those in 2024.
In January 2014, Dolby Laboratories announced Dolby Vision.[15]
In August 2014, PQ was standardized in SMPTE ST 2084.[130]
In October 2014, the HEVC specification incorporates code point for PQ.[131] Previously, it also incorporates the Main 10 profile that supports 10 bits per sampleon their first version.[132]
In October 2014, SMPTE standardized the Mastering Display Color Volume (MDCV) static metadata in SMPTE ST 2086.[133]
In March 2015, HLG was standardized in ARIB STD-B67.[134]
On 8 April 2015, The HDMI Forum released version 2.0a of the HDMI Specification to enable transmission of HDR. The specification references CEA-861.3, which in turn references SMPTE ST 2084 (the standard of PQ).[59] The previous HDMI 2.0 version already supported the Rec. 2020 color space.[135]
On 24 June 2015, Amazon Video was the first streaming service to offer HDR video using the HDR10 format.[136][137]
On 27 August 2015, Consumer Technology Association announced HDR10.[17]
On 17 November 2015,Vudu announced that they had started offering titles in Dolby Vision.[138]
On 1 March 2016, the Blu-ray Disc Association releasedUltra HD Blu-ray with mandatory support for HDR10 and optional support for Dolby Vision.[139]
On 9 April 2016,Netflix started offering both HDR10 and Dolby Vision.[140]
On June to September 2016, SMPTE standardized multiple dynamic metadata for HDR in SMPTE ST 2094.[141]
On 6 July 2016, theInternational Telecommunication Union (ITU) announced Rec. 2100, which defines the image parameters for HDR-TV and use two HDRtransfer functions—HLG and PQ.[11][73]
On 29 July 2016, SKY Perfect JSAT Group announced that on 4 October, they would start the world's first 4K HDR broadcasts using HLG.[142]
On 9 September 2016,Google announcedAndroid TV 7.0, which supports Dolby Vision, HDR10, and HLG.[143][144]
On 26 September 2016,Roku announced that the Roku Premiere+ and Roku Ultra will support HDR using HDR10.[145]
On 7 November 2016, Google announced thatYouTube would stream HDR videos that can be encoded with HLG or PQ.[146][147]
On 17 November 2016, theDigital Video Broadcasting (DVB) Steering Board approved UHD-1 Phase 2 with a HDR solution that supports HLG and PQ.[148][149] The specification has been published as DVB Bluebook A157 and was published by the ETSI as TS 101 154 v2.3.1.[148][149]
On 2 January 2017,LG Electronics USA announced that all of LG's SUPER UHD TV models support a variety of HDR technologies, including Dolby Vision, HDR10, and HLG (Hybrid Log Gamma), and are ready to support Advanced HDR byTechnicolor.
On 20 April 2017,Samsung and Amazon announcedHDR10+.[21]
On 12 September 2017,Apple announced the Apple TV 4K with support for HDR10 and Dolby Vision, and that the iTunes Store would sell and rent 4K HDR content.[150]
On 26 December 2019,Canon announced the adoption of the PQ format (PQ10) for still photography.[31]
On 13 October 2020, Apple announced theiPhone 12 andiPhone 12 Pro series, the first smartphone that can record and edit video in Dolby Vision directly from the camera roll.[151] iPhone uses the Dolby Vision profile 8.4 cross-compatible with HLG.[152]
In June 2021, Panasonic announced a plug-in for Photoshop CC to allow for the editing of HLG stills.[118]
On 4 July 2022, Xiaomi announced the Xiaomi 12S Ultra, the first Android smartphone that can record Dolby Vision video directly from the camera roll.[153][154]
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