JVET-X0009 JVET AHG report: SEI message studies (AHG9) [J. Boyce, S. McCarthy, C. Fogg, P. de Lagrange, A. Luthra, G. J. Sullivan, A. Tourapis, Y.-K. Wang, S. Wenger]

This document summarizes the activity of AHG9: SEI message studies between the 23^rd JVET Meeting (teleconference, 7–16 Jul. 2021) and the 24^th JVET Meeting (teleconference, 6–15 Oct. 2021).

Introduction

At the 23rd JVET meeting, the AHG on SEI message studies was established with the following mandates:

• Study the SEI messages in VSEI, VVC, HEVC and AVC.
• Collect software and showcase information for SEI messages, including encoder and decoder implementations and bitstreams for demonstration and testing.
• Identify potential needs for additional SEI messages.
• Investigate the possible need of mandatory post processing in the context of SEI messages
• Study SEI messages defined in HEVC and AVC for potential use in the VVC context.
• Coordinate with AHG3 for software support of SEI messages.

Related contributions

A total of 5 contributions, not including cross-checks, are identified relating to AHG9, of which:

• 3 contributions relate to the mandate to study the SEI messages in VSEI, VVC, HEVC, and AVC;
• 0 contributions relate to the mandate to collect software and showcase information of SEI messages;
• 2 contributions relate to the mandate to identify potential needs for additional SEI messages;
• 0 contributions relate to the mandate to investigate the possible need of mandatory post processing in the context of SEI messages; and
• 0 contributions relate to the mandate to study SEI messages defined in HEVC and AVC for potential use in the VVC context.

The following is a list of contributions related to AHG9.

Studying the SEI messages in VSEI, VVC, HEVC and AVC

• JVET-X0059 AHG2/AHG9: Comments on the 2nd edition draft text for VSEI [Y.-K. Wang (Bytedance)]
• JVET-X0096 AHG2/AHG9: On Multiview View Position (MVP) SEI message. [B. Choi, A. Hinds, X. Zhang, S. Wenger, S. Liu (Tencent)]
• JVET-X0101 AHG9: On the CREI SEI message. [R. Skupin, C. Bartnik, A. Wieckowski, K. Suehring, Y. Sanchez, B. Bross, T. Schierl (HHI)]

Identifying potential needs for additional SEI messages

• JVET-X0092 AHG9: Down-sample phase indication (SEI message) [J. Samuelsson, A. Tourapis, D. Podborski, K. Rapaka, D. Singer (Apple)]
• JVET-X0112 AHG9: On post-filter SEI [ M. M. Hannuksela, E. B. Aksu, F. Cricri, H. R. Tavakoli, M. Santamaria (Nokia)]

Activities

The regular JVET e-mail reflector was used for discussions (jvet@lists.rwth-aachen.de) with [AHG9] in message headers. There were no emails sent to the JVET reflector during the AHG period.

Recommendations

The AHG recommended to:

• Review all related contributions;
• Continue SEI messages studies.