New HDMI 2.1 supports video up to 10K

The HDMI Forum announced the release of version 2.1 of the HDMI specification, which is now available to all HDMI 2.0 adopters. Bandwidth capability is increased up to 48Gbps.

New HDMI 2.1 supports video up to 10K

The new version of HDMI, 2.1, represents a huge leap forward as it supports resolutions up  to 10K and Dynamic HDR and introduces a new Ultra High Speed HDMI Cable.

We’re not yet completely familiar with 4K, but the industry is moving forward, and the recent announcement by the HDMI Forum confirms it. 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.

New HDMI 2.1 supports video up to 10K
The evolution of HDMI and what HDMI 2.1 brings to the table (use right mouse button to expand image)

Supporting the 48Gbps bandwidth is the new Ultra High Speed HDMI Cable. The cable ensures, according to the HDMI Forum, highbandwidth 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.

New HDMI 2.1 supports video up to 10K

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.

New HDMI 2.1 supports video up to 10K
HDR is evolving to be dynamic (use right mouse button to expand image)

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-byframe 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.
New HDMI 2.1 supports video up to 10K
Chroma table (use right mouse button to expand image)

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 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.

For more information on the HDMI 2.1 Specification or becoming an HDMI Forum member visit the HDMI Licensing Administrator, Inc. booth at CES 2018, LVCC South Hall 1 booth 20542. Follow the link to download the 42 page document HDMI 2.1 Specification Release.


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Journalist, writer and photographer since 1979, both print and online, with a vast experience in the fields of photography, software, hardware, web, aviation, History, video games, technology, having published content in almost all Portuguese newspapers and magazines between 1979 and 2009.

Responsible, in that period, for the launch or edition of multiple magazines in Portugal, covering Photography, Video, Computer Games, Aviation, Nature & Wildlife, he is also the author of four printed books, three guides about Photography and one about Virtual Worlds, and a series of eBooks about Photography.

As a technical translator, worked with Kodak (Portugal), back in the eighties and nineties, for whom he created a professional newsletter. Worked also as a translator for different companies, in the areas of video games and photography.

Internationally, past and present clients on the editorial side include Neowin, WorldStart, Pixiq, Manfrotto School of Xcellence, Photo Tuts+, Pro Photo Coalition, Pro Video Coalition and UAV News. As a translator, Kodak and Canon are companies he has worked with. Works now for a specific client in the area of photography, translating and revising technical texts, from English and Spanish to Portuguese.

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