- HDR DM means TVs will adapt to HDR signals
- Revised specification outlines coding for satellite, cable and terrestrial broadcast systems
- New specification to be forwarded to ETSI for publication
Industry consortium DVB has announced a revision to its specification for the use of video coding in broadcast and broadband applications, adding solutions for HDR Dynamic Mapping.
The addition of HDR DM means a receiver, such as a TV set, will be able to adapt a HDR video signal to the characteristics of the display.
DVB said the specification – ETSI TS 101 154 – is one of its core specifications, outlining how video and audio coding are to be used in satellite, cable and terrestrial broadcast systems.
The new revision was approved by the DVB Steering Board in Geneva on 3 July and means that content creators and device manufacturers have access to a means to adapt video content so that it can replicate as closely as possible to the intended appearance.
“DVB has provided the industry with the specifications needed to deploy UHD services with confidence,” said Peter MacAvock, chair of DVB. “HDR Dynamic Mapping is an important element of the ecosystem, helping broadcasters and other content providers to ensure their video looks as good as it possibly can on a given display.”
The DVB AV coding specification comes with two means of providing HDR video content: Hybrid Log Gamma (HLG10) and the 10-bit variant of Perceptual Quantizer (PQ-10), with DM only applying to the latter.
Dynamic Mapping facilitates the mapping of HDR to lower performance TV sets by inserting Dynamic Mapping Information into the HDR video bitstream, DVB said.
The new version of TS 101 154, which will be forwarded to ETSI for publication, comes with three solutions for HDR Dynamic Mapping:
- SMPTE ST 2094-10 – Dynamic Metadata for Colour Volume Transform — Application #1
- ETSI TS 103 433-2 (SL-HDR2) – High-Performance Single-Layer High Dynamic Range (HDR) System for use in Consumer Electronics devices; Part 2: Enhancements for Perceptual Quantization (PQ) transfer function based High Dynamic Range (HDR) Systems
- SMPTE ST 2094-40 – Dynamic Metadata for Colour Volume Transform — Application #4
“Following approval of the specification, the DVB Technical Module working group on audio and video coding (TM-AVC) will proceed with verification and validation activities to aid implementation of the new solutions,” DVB said in its announcement.
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