JVET-AF0001 JVET AHG report: Project Management (AHG1) [J.-R. Ohm (chair), G. J. Sullivan (vice chair)]

The reflector used for discussions by the JVET and all of its AHGs is the JVET reflector: jvet@lists.rwth-aachen.de.

For subscription to this list, see https://lists.rwth-aachen.de/postorius/lists/jvet.lists.rwth-aachen.de/.

The number of subscribers (by the beginning of the current meeting) was 1233. Furthermore, the previous lists of joint teams (which were still kept open as archives) had the following number of subscribers:

• JCT-VC – 1159 subscribers
• JCT-3V – 682 subscribers
• JVT-experts – 2068 subscribers

The work of the JVET overall had proceeded well in the interim period with higher number of input documents (as compared to the previous meeting) submitted to the current meeting. Intense discussion had been carried out on the group email reflector, and most output documents from the preceding meeting had been produced as planned.

Output documents from the preceding meeting had been made initially available at the JVET web site (https://jvet-experts.org/) or the ITU-based JVET site (http://wftp3.itu.int/av-arch/jvet-site/2023_07_AE_Geneva/). It is noted that the previous document sites http://phenix.int-evry.fr/jvet/, http://phenix.int-evry.fr/jct/, and http://phenix.int-evry.fr/jct3v/ are still accessible, but were converted to read-only.

The list of documents produced included the following, particularly:

a) JVET documents

• The meeting report (JVET-AE1000) [Posted 2023-08-16, also submitted as WG 5 N 215]
• JVET-AE1004 Errata report items for VVC, VSEI, HEVC, AVC, and Video CICP [Posted 2023-07-26]
• JVET-AE1006 New profiles, colour decriptors, and SEI messages for HEVC (draft 1) [Posted 2023-08-21, last update 2023-09-04, also issued as WG 5 CDAM N 226]
• JVET-AE1011 HEVC multiview profiles supporting extended bit depth (draft 2) [Posted 2023-09-23]
• JVET-AE1013 Common test conditions of 3DV experiments [Posted 2023-10-12]
• JVET-AE1016 AVC with extensions and corrections (draft 1) [Posted 2023-08-16, also issued as WG 5 CD of AVC 11^th edition N 218]
• JVET-AE2005 New level and systems-related supplemental enhancement information for VVC (Draft 6) [Posted 2023-08-11, last update 2023-10-03]
• JVET-AE2006 Additional SEI messages for VSEI (Draft 5) [Posted 2023-07-21, last update 2023-08-23]
• JVET-AE2016 Common test conditions and evaluation procedures for neural network-based video coding technology [Posted 2023-08-01]
• JVET-AE2017 Common test conditions and evaluation procedures for enhanced compression tool testing [Posted 2023-08-01]
• JVET-AE2019 Description of algorithms and software in neural network-based video coding (NNVC) version 4 [Posted 2023-09-01, last update 2023-09-04]
• JVET-AD2020 Film grain synthesis technology for video applications (Draft 5) [Posted 2023-09-222, last update 2023-09-28, also to be issued as WG 5 DTR N 222]
• JVET-AE2021 Verification test plan for VVC multilayer coding (update 1) [Posted 2023-10-06]
• JVET-AE2023 Exploration experiment on neural network-based video coding (EE1) [Posted 2023-07-17, last update 2023-08-10]
• JVET-AE2024 Exploration experiment on enhanced compression beyond VVC capability (EE2) [Posted 2023-07-18, last update 2023-08-22]
• JVET-AE2025 Algorithm description of Enhanced Compression Model 10 (ECM 10) [Posted 2023-10-02]
• JVET-AE2027 SEI processing order SEI message in VVC (Draft 5) [Posted 2023-09-02, also issued as WG 5 preliminary WD N 229]
• JVET-AE2028 Additional conformance bitstreams for VVC multilayer configurations [Posted 2023-09-01]
• JVET-AE2030 Optimization of encoders and receiving systems for machine analysis of coded video content (draft 3) [Posted 2023-09-14, also issued as WG 5 preliminary WD N 224]
• JVET-AE2031 Common test conditions for optimization of encoders and receiving systems for machine analysis of coded video content [Posted 2023-08-11]
• JVET-AE2032 Technologies under consideration for future extensions of VSEI (draft 1) [Posted 2023-09-15]

b) documents produced as WG 5 documents only:

• WG 5 N 217 Request for ISO/IEC 14496-10 11th edition
• WG 5 N 219 Disposition of comments received on ISO/IEC 23002-7:2022 DAM 1
• WG 5 N 220 Text of ISO/IEC FDIS 23002-7:202x Versatile supplemental enhancement infor­mation messages for coded video bitstreams (3rd edition) (to be delivered)
• WG 5 N 222 Disposition of comments received on ISO/IEC CDTR 23002-9
• WG 5 N 225 Request for ISO/IEC 23008-2:202x/Amd.1
• WG 5 N 227 Disposition of comments received on ISO/IEC 23090-3:2022 DAM 1
• WG 5 N 228 Text of ISO/IEC FDIS 23090-3:202x Versatile video coding (3rd edition) (to be delivered)
• Liaison statement to SC 29/WG 1 (JPEG) on JPEG AI, neural network-based video coding, and SEI messages for neural network-based post filtering (WG 5 N 234)
• List of AHGs established at the 12^th WG 5 meeting (WG 5 N 235)

c) draft revised ITU-T Recommendations forwarded by JVET and Q6/16 for ITU-T Consent:

TD169/Plen ITU-T H.265 (V9) "High efficiency video coding" (Rev.)

TD171/Plen ITU-T H.266 (V3) "Versatile video coding" (Rev.)

TD159/Plen ITU-T H.266.1 (V2) "Conformance specification for ITU-T H.266 versatile video coding" (Rev.)

TD172/Plen ITU-T H.273 (V3) "Coding-independent code points for video signal type identification" (Rev.)

TD170/Plen (A.5: TD173/Plen) ITU-T H.274 (V3) "Versatile supplemental enhancement information messages for coded video bitstreams" (Rev.)

It is noted that documents JVET-AC 2026 Conformance testing for VVC operation range extensions (Draft 4), and the corresponding FDIS 23090-15 as WG 5 N 185 (VVC conformance 2^nd ed.) have finally been delivered as outputs from the 29^th JVET (10^th WG 5) meeting of January 2023.

The fourteen ad hoc groups had made progress, and reports from those activities had been submitted. Furthermore, two exploration experiments (EE) on neural network-based video coding and on enhanced compression beyond VVC capability were conducted.

The arrangements for the 32^nd meeting had been announced in the JVET reflector, in the JVET logistics document (https://www.itu.int/wftp3/av-arch/jvet-site/2023_10_AF_Hannover/JVET-AF_Logistics.docx), and in the WG 5 calling notice (N 236) and agenda (N 237) for the 13^th WG 5 meeting.

Software integration was finalized approximately according to the plan.

Various problem reports relating to asserted bugs in the software, draft specification text, and reference encoder description had been submitted to an informal "bug tracking" system. That system is not intended as a replacement of our ordinary contribution submission process. However, the bug tracking system was considered to have been helpful to the software coordinators and text editors. The bug tracker reports had been automatically forwarded to the group email reflector, where the issues were discussed – and this is reported to have been helpful.

Roughly 180 input contributions (not counting the AHG reports, summary reports and crosschecks) had been registered for consideration at the current meeting.

It is further noted that, starting from the twentieth JVET meeting, work items which had originally been conducted by the Joint Collaborative Team on Video Coding (JCT-VC) were continued to be conducted in JVET as a single joint team, as negotiated by the parent bodies. This particularly consists of work on

• High Efficiency Video Coding (HEVC) and its extensions, the development of associated conformance test sets, reference software, verification testing, and non-normative guidance information,
• Specification of Coding-independent Code Points (Video) (CICP), and associated technical report(s),
• Maintenance and minor enhancement work on the Advanced Video Coding (AVC) standard, associated conformance test sets and reference software.

To retain a consistent numbering scheme, the number range of output documents starting from 1001 was reserved for the previous JCT-VC topic items listed above, whereas the number range starting from 2001 was retained for VVC, VSEI and exploration activities.

A preliminary basis for the document subject allocation and meeting notes for the 32nd meeting had been made publicly available on the ITU-hosted ftp site as http://wftp3.itu.int/av-arch/jvet-site/2023_10_AF_Hannover/JVET-AF_notes_d0.docx.

The AHG recommended its continuation.