HDMI 2.1 dailytechnic.com

HDMI 2.1 Specification

HDMI® Specification 2.1 is that the most up-to-date update of the HDMI specification and supports a variety of upper video resolutions and refresh rates including 8K60 and 4K120, and resolutions up to 10K. Dynamic HDR formats also are supported, and bandwidth capability is increased up to 48Gbps.

Supporting the 48Gbps bandwidth is that the new Ultra High-Speed HDMI Cable. The cable ensures ultra 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 backward compatible and may be used with the prevailing installed base of HDMI devices.

HDMI Specification 2.1 feature highlights include:


Higher video resolutions support a variety of high resolutions and faster refresh rates including 8K60Hz and 4K120Hz for immersive viewing and smooth fast-action detail. Resolutions up to 10K also are 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 maybe 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 backward compatible with earlier versions of the HDMI Specification and may be used with existing HDMI devices.

HDMI 2.1 Specification dailytechnic.com
source hdmi.org

eARC simplifies connectivity, provides greater simple use and supports the foremost advanced audio formats and highest audio quality. It ensures full compatibility between audio devices and upcoming HDMI 2.1 products

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Enhanced gaming and media features ensure another 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.
Auto Low Latency Mode (ALLM) allows the perfect latency setting to automatically be set allowing smooth, lag-free, and uninterrupted viewing and interactivity.
Quick Media Switching (QMS) for movies and video eliminates the delay which will end in blank screens before content is displayed.
Quick Frame Transport (QFT) reduces latency for smoother no-lag gaming and real-time interactive computer game.

Version 2.1 of the HDMI Specification is backward compatible with earlier versions of the Specification and is out there to all or any HDMI 2.0 Adopters.

HDMI 2.1 Gaming and Media Features

HDMI 2.1 has added the following new features:

  • Auto Low-Latency Mode (ALLM)
  • Variable Refresh Rate (VRR)
  • Quick Frame Transport (QFT)
  • Quick Media Switching (QMS)

What is Auto Low-Latency Mode (ALLM)?

This feature lets a game console, PC, or other device send a signal to the display which will cause it to automatically switch to a low-latency, a low-lag mode for gaming. This could benefit other uses, such as karaoke and video conferencing. When the source no longer requires this mode for example, when switching to a movie stream—the source disables the signal and the display reverts back to its previous model.

Is HDMI 2.0 Needed for 4K?

HDMI cables and their different variations have made HDMI cables more confusing than they have to be. The result’s some manufacturers are selling overpriced cables to unsuspecting customers. Here’s what you would like to understand about HDMI cables and their standards.

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Here is a breakdown on what their differences are and what each one supports:

HDMI 1.4 – If you want your HDMI cables to support 4K resolution, you need to make sure that they are High-Speed HDMI cables. They are tested to transmit video resolutions from 1080p to 4K with a richer color palette. With or without HDR, you need High-Speed HDMI cables. There is a Premium certification as well, but it is completely optional.


HDMI 2.0 – This enhancement allows everything that HDMI 1.4 offers, except it, offers increased bandwidth and the ability to present a wider variety of colors. HDMI 2.0 is certified to have a bandwidth of 18 Gigabits per second which supports 4K resolution at 60 FPS (frames per second).


HDMI 2.0a – HDMI 2.0a offers all previous enhancements with different types of HDR. This enhanced cable allows for richer and more vibrant colors. It is noticeable compared to the HDMI 1.4 and 2.0; however, you do not need this cable in order to support 4K. It all depends on what you want the resolution to be.


HDMI 2.1 cables enable dynamic HDR, faster refresh rates, and much higher bandwidth than any of the previous.


Source screenbeam.com

Go Wireless – Beam your Favorite Content Directly to an HDTV

Wireless Video HDMI may be a simple, easy, and reliable alternative to regular HDMI cables that don’t require a Wi-Fi connection. Wireless Video HDMI may be a direct connection without wires between your media source and television, so there’s no degradation in quality or high latency.

Wireless video HDMI can wirelessly deliver up to 1080p60 HD (not 4k) quality video from your media player to your TV and supports 2 channel stereos with ultra-low latency.

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Instead of connecting a tough wire directly from your media player to your TV, you attach a transmitter and receiver at either end that replaces those cables. The transmitter attaches to your computer, Blu-ray player, or game console and therefore the receiver to your TV. This instantly creates a wireless connection between the 2. you’ll even send HD video or audio from your media player in one room up to 150 feet to your TV in another room.

Transmitters and receivers typically are available during a kit, like Actiontec’s MyWirelessTV2, so there are not any worries of assuring you’ve got all the needed components.