JVET-AN0142 Non-EE2: GPM without blending for screen content [J.-Y. Kim, J.-H. Son, K. Kim, J.-S. Kwak (WILUS)]

For screen content videos, a blending width of 1/4τ is consistently used for SGPM-coded blocks. However, the adaptive blending method remains enabled for the GPM-coded blocks. This contribution proposes the GPM-coded blocks in without blending for screen content, consistent with the SGPM without blending. Based on ECM-18.0, corresponding simulation results are reported.

RA configuration:

Class F: -0.02%, 0.04%, 0.05%; 99.7% enc time, 100.0% dec time

Class TGM: -0.12%, -0.12%, -0.08%; 99.2% enc time, 100.1% dec time

LDB configuration:

Class F: -0.18%, -0.03%, 0.04%; 99.9% enc time, 100.2% dec time

Class TGM: -0.20%, -0.30%, -0.02%; 99.2% enc time, 98.7% dec time

It was commented that for mixed content (as some sequences in class F) it may not be helpful to turn off the blending. Otherwise, it is definitely useful for graphics content.

It was agreed to investigate this in an EE.

JVET-AN2041 Preliminary Announcement of JVET AHG17 Meeting in Aachen, DE, during 23-27 February 2026 [J.-R. Ohm, M. Wien] (2025-10-27)

Meeting will be hybrid.

Experts requesting 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 1030–1100 on Saturday 11 October. In an update discussed on Sunday, the following changes (which had not yet been included in the version that was presented for information in the MPEG WG’s information exchange meeting on Saturday) were approved:

• The following recommendation was deemed necessary to be added: “WG 5 notes that action appears to not yet have been taken on some previous requests for public availability of ISO/IEC deliverables without cost, and kindly requests that ISO/IEC 23008-5:2017 (Ed. 2), ISO/IEC 23008-5:2017/Amd.1:2017, ISO/IEC 23008-8:2018 (Ed. 2), ISO/IEC 23008-8:2018/Amd1:2019, and ISO/IEC 23091-2:2025 (Ed. 3) be made freely available, considering that equivalent publications are freely available elsewhere from ITU-T as editions of ITU-T H.265.2, ITU-T H.265.1, and ITU-T H.273.” Experts were also asked to inform J.-R. Ohm and G. J. Sullivan if relevant standards were missing from this list, as far as they would be expected to be made publicly available.
• The responsible person for delivering 23090-3 is to be changed to Y.K. Wang.
• Some additions are also necessary to the resolutions of thanks, relating to multi-layer testing and...