HDMI 2.1 Features Overview

HDMI 2.1 was announced last January with support for up to 10K @ 120 Hz while using Display Stream Compression (DSC) and new 48Gbps cables, as well as other improvements. The HDMI Forum has now released version 2.1 of the HDMI specifications. The detailed specifications are only available to HDMI adopters, but an overview of the specifications can be downloaded by simple mortals. From the table above, we can see HDMI 2.1 adds 7 new features compared to HDMI 2.0b: Dynamic HDR (HDR dynamic metadata) – HDR data (depth, detail, brightness, contrast, and color gamuts) can now be optimized on a scene-by-scene or even a frame-by-frame basis Enhanced audio return channel (eARC) – eARC supports high-bitrate home theater audio formats, object-based audio, uncompressed 5.1 and 7.1, and 32-channel uncompressed audio thanks to up to 37 Mbps audio bandwidth. Variable Refresh Rate (VRR) – Syncs up source and display with continually […]

HDMI 2.1 Specification to Add Support for 4K @ 120 Hz, 8K and 10K Resolutions. New 48G Cable Required.

The HDMI Forum has just announced they’ve been working on HDMI specification Version 2.1 adding new video resolutions and refresh rates including 8K60 and 4K120, as well as dynamic HDR, and increased bandwidth up to 48 Gbps for uncompressed 8K videos with HDR. The new specification also includes support for eARC (enhanced audio return channel) with support for advanced audio formats such as object-based audio, and advanced audio signal control capabilities including device auto-detect. Game Mode VRR is another new feature from HDMI 2.1 with variable refresh rate to enable a 3D GPU to display the image at the moment it is rendered in order to reduce lag and frame tearing. Beside 4K120 and 8K60, the new specification also handles 4K, 5K, 8K, and even 10K resolutions at various frame rates between 50Hz to 120 Hz, up to 10K @ 120 Hz. Higher resolutions and frame rates (>=4K @ 120Hz; […]

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