JVET-AP0146 AHG9: Software implementation of the Green SEI message and demonstration of the use of attenuation map information metadata for display adaptation [C. H. Demarty, N. Caramelli, F. Aumont (InterDigital)]

This contribution informs of the implementation of the carriage of the display attenuation maps as auxiliary pictures in the bitstream, and of their usage at the decoder side for display adaptation, with the goal of reducing the energy consumption of the display.

This contribution also proposes a demonstration of the encoding/decoding of a green MPEG bitstream and its rendering result on a TV.

In v2 version, the number of a related contribution was added.

In v3, some typos were corrected and a slide deck was added.

A demo will be shown on Wednesday at lunch time in room C2.

A software implementation is available.

Non-SEI HLS aspects (0)

Section kept as template for future use.

Plenary meetings, joint meetings, BoG reports, and liaison communications

General

Plenary on Friday 24 April, 1645-1745

The following topic was discussed in this JVET plenary: Consideration of possible VSEI version 5

Questions to be considered:

• Urgency of defining new SEI messages in terms of market relevance
• Maturity of those SEI messages, criteria such as showcase, implementation, expectation on usage, etc.
• Possible need of normative behaviour of SEI message processing
• Possible relation with elements of new video standard
• Possible timeline

SEI messages proposed in this meeting for a possible version 5 (in JVET-AP0067, JVET-AP0073, JVET-AP0074, JVET-AP0075, JVET-AP0097, JVET-AP0196, plus some...

JVET-AO2041 Announcement of JVET AHG17 Meeting in Aachen, DE, 25-27 February 2026 [J.-R. Ohm, M. Wien] (2026-02-06)

Meeting will be hybrid.

Experts with need to request for Schengen visa might want to contact J.-R. Ohm and M. Wien as soon as possible.

Future meeting plans, expressions of thanks, a.o.b., and closing of the meeting

The draft of the WG 5 recommendations (see Annex C) was reviewed and approved in JVET at 1630–1645 on Friday 23 January.

Future meeting plans were established with the following general guidelines (assuming face-to-face meetings):

• Meeting under ITU-T SG21 auspices when it meets (ordinarily starting meetings on the Monday, Tuesday or Wednesday of the first week and closing it on the Wednesday of the second week of the SG21 meeting – a total of 8-10 meeting days), and
• Otherwise meeting under ISO/IEC JTC 1/‌SC 29 auspices when its MPEG WGs meet (ordinarily starting meetings on the Wednesday, Thursday or Friday prior to the main week of such meetings and closing it on the same day as other MPEG WGs – a total of 8–10 meeting days).

In cases where an exceptionally high workload is expected for a meeting, an earlier starting date may be defined, or AHG meetings might be scheduled prior to the meeting. In cases of online meetings, no sessions should be held on weekend days, such that meetings would typically start two days earlier.

Some specific future meeting plans were established as follows:

• During 24 April – 1 May 2026, 42^nd meeting under ISO/IEC JTC 1/‌SC 29 auspices in Santa Eulària, ES, to be conducted as hybrid meeting,
• During 7 – 15 July 2026, 43^rd