JVET-AQ2032 Technologies under consideration for future extensions of VSEI (version 13) [S. Deshpande, J. Boyce, J. Chen, M. M. Hannuksela, Y. He, K. Sühring, G. J. Sullivan, H. Tan, A. Tourapis, J. Xu, X. Xu] (2026-08-28)
Primary editor: S. Deshpande
It is noted that the availability date above is for the final version, and it is expected to have an initial version available by 2026-08-07. Alignment with software development of the GSI SEI is of high priority, as the the software is needed to conduct the related JEEs
New elements or improvements (list had been reviewed and approved in JVET plenary on Wednesday 15 July at 1130):
VSEI errata items
- (The aspect that affects syntax of SEI extensions included in the TuC) AVC JVET-AQ0089 AHG2/AHG9: Errata on general SEI signalling mechanism for VVC, VSEI, HEVC, and AVC
Editorial:
- JVET-AQ0072 AHG9: Editorial improvements for TuC
Multiple SEI messages
- JVET-AQ0163 AHG9: on SeiExtenionEnableFlag Interface for SII, PRI, EOI
- JVET-AQ0105 AHG9: On miscellaneous aspects of SEI messages in TuC
NNPF
- JVET-AQ0053 AHG9: On multilayer NNPF
- JVET-AQ0058 AHG9: On NNPF Multiple Inferences Information Signaling
- JVET-AQ0059 AHG9: Bug Fixes for Neural-network Post-filter in TuC
- JVET-AQ0155 AHG9: On NNPFC updates
Constituent rectangles (CR)
- JVET-AQ0096 AHG9: On the CR SEI message
- Items 1 and 2 of JVET-AQ0105 AHG9: On miscellaneous aspects of SEI messages in TuC
Enhanced colour format information (ECFI)
- Item 2 of JVET-AQ0075 AHG9: On video full range indication
- JVET-AQ0105 AHG9: On miscellaneous aspects of SEI messages in TuC
Versatile SEI RBSP
- JVET-AQ0090 AHG9: On SEI position, payload type, and payload size signalling in the general SEI signalling mechanism in VSEI TuC
- JVET-AQ0091 AHG9: On SEI payload size semantics and its impacts in the general SEI signalling mechanism in VSEI TuC
Quality metric (QM)
- JVET-AQ0073 AHG9: On Quality Metric SEI message
- JVET-AQ0108 AHG9: On quality metrics SEI message
- JVET-AQ0123 AHG9: On reference and source in QM SEI
- JVET-AQ0124 AHG9: On delayed transmission of QM
- JVET-AQ0130 AHG9: On the QM SEI message
Picture segmentation information (PSI)
- JVET-AQ0161 AHG9: on PSI SEI
- JVET-AQ0229 AHG9: On the picture segmentation information SEI message — comments and proposed corrections
Auxiliary sample alignment info (ASAI)
- JVET-AQ0087 AHG9: On the ASAI SEI message
Sample interleaving (SI)
- JVET-AQ0141 AHG9: Fixes to sample interleaving SEI message
Gain Map (GM)
- JVET-AQ0078 AHG9: On Gain map SEI
- JVET-AQ0110 AHG9: On the gain map information SEI message
Generalized alpha plane information (GAPI)
- JVET-AQ0098 AHG9: On the generalized alpha plane information SEI messages
- JVET-AQ0112 AHG9: On the generalized alpha plane information SEI message
Generalized depth information (GDI)
- JVET-AQ0111 AHG9: On the generalized depth information SEI message
- JVET-AQ0165 AHG9: on NADPI BitDepthY Variable
Gaussian splat info (GSI)
- Editorial: JVET-AQ0079 AHG9: Editorial changes for the GSI SEI message in VSEI TuC
- JVET-AQ0080 AHG9: On coding of some syntax elements in the GSI SEI message
- JVET-AQ0081 AHG9: On persistence etc. and error resilience of the GSI SEI message
- JVET-AQ0082 AHG9: On value ranges and decoder handling of reserved values for syntax elements in the GSI SEI message
- JVET-AQ0088 AHG9: On the GSI SEI message syntax and semantics
- JVET-AQ0102 AHG9: Syntax and semantics clean-up of the GSI SEI message
- JVET-AQ0131 AHG9: On the GSI SEI message
- JVET-AQ0132 AHG9: On signaling of various parameters in the GSI SEI message
- JVET-AQ0174 AHG9: On the Gaussian splatting information SEI message
- JVET-AQ0168 AHG9: High-level syntax modifications and bitstream specification for an integer-based GSC V-SEI decoder pipeline
Gaussian splat implicit info (GSII), also referred to as Triplane video-based implicit GS SEI
- JVET-AQ0070 AHG9: [GSC] Improved SEI message for triplane video-based implicit Gaussian splatting representation
Hybrid Gaussian splat info (HGSI), also referred to as Implicit GSI SEI
- JVET-AQ0184 AHG9: [GSC][JEE6.7][JEE6.9] On the Implicit GSI SEI message
New: IR camera adaptation parameters
- JVET-AQ0145 AHG9: IR camera adaptation parameters SE
It is noted that the list above may not be complete; if some adoption is missing that is recorded somewhere else in the meeting notes it shall also be considered included.
Remains valid – not updated: JVET-AP2033 Report of verification tests on VVC multi-layer coding [O. Chubach, S. Iwamura, P. de Lagrange, M. Wien] [AG 5 N 201)]
Remains valid – not updated: JVET-AI2034 Call for new HDR materials for future video coding development [E. François, W. Husak, S. Iwamura, D. Rusanovskyy, A. Segall, M. Wien] [WG 5 N 312)]
Remains valid – not updated: JVET-AJ2035 Test conditions and evaluation procedures for generative face video coding [S. McCarthy, B. Chen]
Remains valid – not updated: JVET-AG2036 Call for training materials for neural network-based video coding tool development [E. Alshina, F. Galpin, S. Liu, M. Wien] [WG 5 N 266)]
Remains valid – not updated: JVET-AJ2037 Report on subjective quality testing of the FGC SEI message (AG 5 N 140) [P. de Lagrange, W. Husak, M. Wien] [AG 5 N 140)]
Remains valid – not updated: JVET-AM2038 White paper on VSEI [J. Boyce, S. McCarthy, S. Deshpande, G. J. Sullivan, Y. Sanchez, Y.-K. Wang] [AG 3 N209]
An update of the white paper on VVC (from 2021) should be done in a future meeting, removing the section on VSEI and referencing to JVET-AM2038.
Remains valid – not updated: JVET-AN2039 Common test conditions for technology targeting ultra low latency and packet loss resilience [S. Ikonin, S. Deshpande, V. Zakharchenko] (2025-10-31)
JVET-AQ2032 Technologies under consideration for future extensions of VSEI (version 13) [S. Deshpande, J. Boyce, J. Chen, M. M. Hannuksela, Y. He, K. Sühring, G. J. Sullivan, H. Tan, A. Tourapis, J. Xu, X. Xu] (2026-08-28)
Primary editor: S. Deshpande
It is noted that the availability date above is for the final version, and it is expected to have an initial version available by 2026-08-07. Alignment with software development of the GSI SEI is of high priority, as the the software is needed to conduct the related JEEs
New elements or improvements (list had been reviewed and approved in JVET plenary on Wednesday 15 July at 1130):
VSEI errata items
(The aspect that affects syntax of SEI extensions included in the TuC) AVC JVET-AQ0089 AHG2/AHG9: Errata on general SEI signalling mechanism for VVC, VSEI, HEVC, and AVC
Editorial:
JVET-AQ0072 AHG9: Editorial improvements for TuC
Multiple SEI messages
JVET-AQ0163 AHG9: on SeiExtenionEnableFlag Interface for SII, PRI, EOI
JVET-AQ0105 AHG9: On miscellaneous aspects of SEI messages in TuC
NNPF
JVET-AQ0053 AHG9: On multilayer NNPF
JVET-AQ0058 AHG9: On NNPF Multiple Inferences Information Signaling
JVET-AQ0059 AHG9: Bug Fixes for Neural-network Post-filter in TuC
JVET-AQ0155 AHG9: On NNPFC updates
Modality Information
JVET-AQ0106 AHG9: On multi-layer spectral representations in modality information SEI message
JVET-AQ0109 AHG9: On the modality information SEI message extension
Encoder optimization info (EOI)
JVET-AQ0104 AHG9: On spatial quality optimization in EOI SEI message
Constituent rectangles (CR)
JVET-AQ0096 AHG9: On the CR SEI message
Items 1 and 2 of JVET-AQ0105 AHG9: On miscellaneous aspects of SEI messages in TuC
Enhanced colour format information (ECFI)
Item 2 of JVET-AQ0075 AHG9: On video full range indication
JVET-AQ0105 AHG9: On miscellaneous aspects of SEI messages in TuC
Versatile SEI RBSP
JVET-AQ0090 AHG9: On SEI position, payload type, and payload size signalling in the general SEI signalling mechanism in VSEI TuC
JVET-AQ0091 AHG9: On SEI payload size semantics and its impacts in the general SEI signalling mechanism in VSEI TuC
Quality metric (QM)
JVET-AQ0073 AHG9: On Quality Metric SEI message
JVET-AQ0108 AHG9: On quality metrics SEI message
JVET-AQ0123 AHG9: On reference and source in QM SEI
JVET-AQ0124 AHG9: On delayed transmission of QM
JVET-AQ0130 AHG9: On the QM SEI message
Picture segmentation information (PSI)
JVET-AQ0161 AHG9: on PSI SEI
JVET-AQ0229 AHG9: On the picture segmentation information SEI message — comments and proposed corrections
Auxiliary sample alignment info (ASAI)
JVET-AQ0087 AHG9: On the ASAI SEI message
Sample interleaving (SI)
JVET-AQ0141 AHG9: Fixes to sample interleaving SEI message
Gain Map (GM)
JVET-AQ0078 AHG9: On Gain map SEI
JVET-AQ0110 AHG9: On the gain map information SEI message
Generalized alpha plane information (GAPI)
JVET-AQ0098 AHG9: On the generalized alpha plane information SEI messages
JVET-AQ0112 AHG9: On the generalized alpha plane information SEI message
Generalized depth information (GDI)
JVET-AQ0111 AHG9: On the generalized depth information SEI message
JVET-AQ0165 AHG9: on NADPI BitDepthY Variable
Gaussian splat info (GSI)
Editorial: JVET-AQ0079 AHG9: Editorial changes for the GSI SEI message in VSEI TuC
JVET-AQ0080 AHG9: On coding of some syntax elements in the GSI SEI message
JVET-AQ0081 AHG9: On persistence etc. and error resilience of the GSI SEI message
JVET-AQ0082 AHG9: On value ranges and decoder handling of reserved values for syntax elements in the GSI SEI message
JVET-AQ0088 AHG9: On the GSI SEI message syntax and semantics
JVET-AQ0102 AHG9: Syntax and semantics clean-up of the GSI SEI message
JVET-AQ0131 AHG9: On the GSI SEI message
JVET-AQ0132 AHG9: On signaling of various parameters in the GSI SEI message
JVET-AQ0174 AHG9: On the Gaussian splatting information SEI message
JVET-AQ0168 AHG9: High-level syntax modifications and bitstream specification for an integer-based GSC V-SEI decoder pipeline
Gaussian splat implicit info (GSII), also referred to as Triplane video-based implicit GS SEI
JVET-AQ0070 AHG9: [GSC] Improved SEI message for triplane video-based implicit Gaussian splatting representation
Hybrid Gaussian splat info (HGSI), also referred to as Implicit GSI SEI
JVET-AQ0184 AHG9: [GSC][JEE6.7][JEE6.9] On the Implicit GSI SEI message
New: IR camera adaptation parameters