HDMI Forum Inc. announced the official specifications of HDMI 2.1, which is now available to all manufacturers that have implemented HDMI 2.0 in their products. This new version supports a wider range of video resolutions and refresh rates, including 8K at 60Hz and 4K at 120Hz, and up to 10K resolutions. It has also support for dynamic HDR and the bandwidth has been increased up to 48Gbps, which is found in the new Ultra High Speed ​​HDMI Cable called HDMI 48G.

This cable ensures the delivery of high bandwidth characteristics, including video in 8K resolution without HDR compression. This presents a very low electromagnetic interference that reduces interference with nearby wireless devices. The cable is compatible with previous versions and can be used on all existing devices with HDMI.

The features of the HDMI 2.1 include:

  • Higher video resolutions with higher refresh rates including 8K @ 60FPS and 4K @ 60FPS for immersive viewing with smoother quick action details. Resolutions up to 10K are also supported for commercial / industrial video and audio, and special uses.
  • HDR’s dynamic support ensures that every moment of a video is displayed in its ideal depth, detail, brightness, contrast values ​​with a wider color gamut.
  • The Ultra High Speed ​​HDMI Cable supports an uncompressed bandwidth of 48Gbps, with very low electromagnetic interference that reduces interference with nearby wireless devices.
  • eARC simplifies connectivity, making it easier to use by supporting the most advanced audio formats and the highest audio quality. It also ensures compatibility between audio devices and upcoming HDMI 2.1 products.
  • Improved refresh rates ensure a level of added smoothness, with continuous movement for games, video and movies:
    • Variable Refresh Rate (VRR) reduces or eliminates lag, stuttering and frame tearing for a much more fluid gameplay.
    • Quick Media Switching (QMS) for movies and video eliminates the delay that can result in white screens before the content is played.
    • Quick Frame Transport (QFT) reduces latency for smoother gameplay without lag, and interaction with virtual reality in real time.
  • Auto Low Latency Mode (ALLM) allows the ideal automatic latency setting for smooth, non-lagged, uninterrupted interaction and vision.

Conformance testing of HDMI 2.1 specifications will be published during the first and third quarter of 2018, and all HDMI adopters will be notified when it becomes available.

A pity that HDMI 2.1 has not also implemented an anti-aliasing solution similar to that of the mCable Gaming Edition’ of Marseille, although this would increase a price, since it uses a special chip to perform said work.