HDMI 2.1 Specification Announced: 8K60 and 4K120, Dynamic HDR, Game Mode

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muddymind

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HDMI Specification 2.1 is the most recent update of the HDMI specification, featuring advanced features for the HDMI ecosystem. It supports a range of higher video resolutions and refresh rates, including 8K60 and 4K120, Dynamic HDR, and increased bandwidth with a new 48G (48 Gbps) cable. Version 2.1 of the HDMI Specification is backward compatible with earlier versions of the specification, and it also introduces an interesting new mode: Game Mode VRR, which by itself supports variable refresh rate, which "enables a 3D graphics processor to display the image at the moment it is rendered for more fluid and better detailed gameplay, and for reducing or eliminating lag, stutter, and frame tearing." This new Game mode spec, which is similar to the G-Sync and FreeSync technologies already available, will also apparently work with both PCs and consoles.

HDMI Specification 2.1 Feature Highlights include:
  • Higher Video Resolutions support a range of higher resolutions and faster refresh rates including 8K60Hz and 4K120Hz for immersive viewing and smooth fast-action detail.
  • Dynamic HDR ensures every moment of a video is displayed at its ideal values for depth, detail, brightness, contrast, and wider color gamuts-on a scene-by-scene or even a frame-by-frame basis.
  • 48G cables enable up to 48Gbps bandwidth for uncompressed HDMI 2.1 feature support including 8K video with HDR. The cable is backwards compatible with earlier versions of the HDMI Specification and can be used with existing HDMI devices.
  • eARC supports the most advanced audio formats such as object-based audio, and enables advanced audio signal control capabilities including device auto-detect.
  • Game Mode VRR features variable refresh rate, which enables a 3D graphics processor to display the image at the moment it is rendered for more fluid and better detailed gameplay, and for reducing or eliminating lag, stutter, and frame tearing.
Also interesting is the built-in support for object-based audio, which means you'll be able to use the new cables and ports with Dolby Atmos sound and similar technologies. Object-based audio such as this expands the previous 5.1 and 7.1 setups to include numerous speakers which are placed around a room to create an all-enveloping, "3D" sound experience.

The new specification will be available to all HDMI 2.0 Adopters and they will be notified when it is released early in Q2 2017.
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Refresh rate variável como spec oficial nativa finalmente. Vai é demorar até estar tudo disponível :\
 
É precisamente pelo facto de a interface mais popular ser o HDMI que torna esta spec importante. O mercado de consolas e TVs apenas conhece HDMI.
 
vandaminator disse:
Essas funcionalidades já existem na ultima versão do DP, existem é poucos monitores com DP e praticamente nenhuma TV
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Com DP são quase todos os monitores acima de 1080p, por causa da limitação do HDMI 1.4.


A melhor parte do novo formato, para mim, é o eARC. Finalmente quem usar ARC deixa de estar limitado a formatos de som surround com 25 anos (Dolby Digital e DTS).
 
E finalmente temos a spec final!

HDMI 2.1 Specification Sets New Resolution Standard

HDMI Forum, Inc. today announced the release of Version 2.1 of the HDMI Specification which is now available to all HDMI 2.0 adopters. This latest HDMI Specification supports a range of higher video resolutions and refresh rates including 8K60 and 4K120, and resolutions up to 10K. Dynamic HDR formats are also supported, and bandwidth capability is increased up to 48Gbps. Supporting the 48Gbps bandwidth is the new Ultra High Speed HDMI Cable. The cable ensures high- bandwidth dependent features are delivered including uncompressed 8K video with HDR. It features exceptionally low EMI (electro-magnetic interference) which reduces interference with nearby wireless devices. The cable is backwards compatible and can be used with the existing installed base of HDMI devices.

Version 2.1 of the HDMI Specification is backward compatible with earlier versions of the specification, and was developed by the HDMI Forum's Technical Working Group whose members represent some of the world's leading manufacturers of consumer electronics, personal computers, mobile devices, cables and components.

"The HDMI Forum's mission is to develop specifications meeting market needs, growing demands for higher performance, and to enable future product opportunities," said Robert Blanchard of Sony Electronics, president of the HDMI Forum.

HDMI Specification 2.1 Features Include:
  • Higher video resolutions support a range of high resolutions and faster refresh rates including 8K60Hz and 4K120Hz for immersive viewing and smooth fast-action detail. Resolutions up to 10K are also supported for commercial AV, and industrial and specialty usages.
  • Dynamic HDR support ensures every moment of a video is displayed at its ideal values for depth, detail, brightness, contrast and wider color gamuts-on a scene-by-scene or even a frame-by- frame basis.
  • The Ultra High Speed HDMI Cable supports the 48G bandwidth for uncompressed HDMI 2.1 feature support. The cable also features very low EMI emission and is backwards compatible with earlier versions of the HDMI Specification and can be used with existing HDMI devices.
  • eARC simplifies connectivity, provides greater ease of use, and supports the most advanced audio formats and highest audio quality. It ensures full compatibility between audio devices and upcoming HDMI 2.1 products.
  • Enhanced refresh rate features ensure an added level of smooth and seamless motion and transitions for gaming, movies and video. They include:
    • Variable Refresh Rate (VRR) reduces or eliminates lag, stutter and frame tearing for more fluid and better detailed gameplay.
    • Quick Media Switching (QMS) for movies and video eliminates the delay that can result in blank screens before content is displayed.
    • Quick Frame Transport (QFT) reduces latency for smoother no-lag gaming, and real-time interactive virtual reality.
    • Auto Low Latency Mode (ALLM) allows the ideal latency setting to automatically be set allowing for smooth, lag-free and uninterrupted viewing and interactivity.
The HDMI 2.1 Compliance Test Specification (CTS) will be published in stages during Q1-Q3 2018, and HDMI adopters will be notified when it is available.

The HDMI Forum Reaches Out to Grow Global Membership
The HDMI Forum is an open trade association that guides the future direction of HDMI technology and develops new versions of the HDMI Specification. The HDMI Forum currently has a membership of 92 companies, and is actively inviting more companies to apply for membership and help shape the future of HDMI technology. There is also a focus to encourage more companies to participate as the global presence of HDMI-enabled products and solutions continues to grow.
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Dado que o CTS apenas está previsto para Q1-Q3 de 2018 não esperem nada cá fora antes de Q1-Q2 de 2019.
 
Só tenho pena do VRR da spec ser igual ao Freesync e não terem ido mais longe e usar a mesma técnica do g-sync ou parecido de desmultiplicação de refrescamentos para aumentarem a janela em que VRR vai estar disponível.
Para quem não sabe o g-sync simula frequencias baixas pela duplicação de refrescamentos ao dobro da frequência. Por exemplo se o intervalo é de 35-75Hz podem fazer 25fps com dois frames a 50Hz.
Para consolas é extremamente importante pois é raro o monitor que tem janela VRR abaixo dos 30Hz que é precisamente o que precisam para os jogos que não conseguem o lock de 30fps na perfeição.
 
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