HDMI 2.0b Can Support HLG HDR

HDMI has modified HDMI 2.0b again, to add support for the HLG HDR format.

The HDMI Forum said “Previously, HDMI Specification Version 2.0b (HDMI 2.0b) only supported HDR (High Dynamic Range) video transport in the SMPTE ST 2084 EOTF (as applied in the media profile commonly known as HDR10), by referencing the CTA861.3 specification. The Consumer Technology Association (CTA) has recently notified the HDMI Forum of the adoption of a new version of the CTA-861 Specification, CTA-861-G. This new version provides additional support for HDR Video transport by including (among others) an extension to the static metadata signaling to include the HLG (Hybrid Log Gamma) EOTF. The HDMI Forum has assessed the applicability of the CTA-861-G Specification to HDMI 2.0b. The HDMI Forum has confirmed that the extension of the static metadata signaling to include HLG can be utilized under the existing HDMI 2.0b Specification. This means that HLG Video Transport functionality may be implemented on HDMI 2.0b compliant devices”.

Analyst Comment

This development will please a number of players in the European TV business. This is by our reckoning, the second or third version of 2.0b! HDMI says that it has a ‘major announcement’ on HDMI. Sometime Display Daily contributor, Pete Putman, recently wrote an article suggesting that HDMI should re-launch SuperMHL as ‘HDMI 3.0’ – has he heard a whisper? Others suggest that there will be a version 2.1 with support for dynamic metadata, as 2.0b only supports static metadata. (BR)