Sci-tech

HDMI 2.1 supports 10K res, which is a huge 10240 x 4320

HDMI 2.1 supports 10K res, which is a huge 10240 x 4320

And if 8K isn't enough pixels for you, there are a number of 10K formats supported for a 10,240×4,320 resolution, intended for specialized commercial applications. Now after several months of additional work, the HDMI Forum has finalized its specification, making HDMI 2.1 official.

HDMI 2.1 supports a whole host of new video outputs including 4K video at 120Hz and 8K video at 60Hz, along with theoretically supporting 10K videos.

If you're sceptical that a mere TV needs bandwidth that over Ethernet would be suitable for a data centre, think again: the HDMI Forum explained uncompressed 8K high dynamic range (HDR) video is dependent on the boosted bandwidth. It features exceptionally low EMI (electro-magnetic interference) which reduces interference with nearby wireless devices.

Developed by the HDMI Forum's technical working group, version 2.1 of the HDMI specification is backward compatible with earlier versions of the specification.

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 new standard has a hugely increased bandwidth of 48Gbps - more than doubling the ability of the previous (2.0) version, which allowed 18Gbps. It's backwards compatible with earlier versions of the HDMI specification and can thus 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.

Another big novelty for HDMI is support for Dynamic HDR as well as the Variable Refresh Rate (VRR) technology, which should reduce lag, frame stutter, skipping and freezing as well as deal with that pesky frame tearing. Auto Low Latency Mode automatically sets the ideal latency setting for lag-free and uninterrupted viewing and interactivity.

Not many people will likely be too excited about the latter, but after the glut of cheaper 4K tellies that cropped up in the Black Friday sales, better 4K frame rates has a bit more pull to it.

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