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41st Meeting: by teleconference, CH, January 2026 2026-04-24 19:03
Support for additional SEI messages in AVC (Draft 5)
Authors: Karsten Sühring Jill Boyce Gary J. Sullivan Ye-Kui Wang Jens-Rainer Ohm
Abstract
This document contains the draft text for changes to the Advanced Video Coding (AVC) standard (Rec. ITU-T H.264 ISO/IEC 14496-10). The changes include the support of five new SEI messages, namely the source picture timing information, modality information, digitally signed content initialization, digitally signed content selection, and digitally signed content verification SEI messages, through referencing the Versatile Supplemental Enhancement Information (VSEI) standard (Rec. ITU-T H.274 ISO/IEC 230027).
Meeting Notes
JVET-AO1017 Support for additional SEI messages in AVC (Draft 5) [K. Sühring, J. Boyce, G. J. Sullivan, Y.-K. Wang] (2026-02-27)

Primary editor: K. Sühring

A preliminary DoC WG 5 N 384 on the DAM was reviewed and approved on Thursday 22 Jan. at 2200-2210. Progression to FDAM/FDIS integrated version was planned to be done in July 2026 at latest.

Changes are editorial improvements, interface changes, constraints, and bug fixes agreed at this meeting, including elements from:

  • JVET-AO0212 Extension mechanism for new AVC SEI messages

It is noted that the list above may not be complete, and some aspects relating to VSEI interface may first need a correction in VSEIv4 (see JVET-AO1004); 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-AN1018 HEVC with extensions and corrections (Draft 3) [Y.-K. Wang, B. Bross, S. Deshpande, G. J. Sullivan, A. Tourapis] (2025-10-17)

Primary editor: Y.-K. Wang.

This was submitted to ITU consent on H.265 11th ed. It is noted that this may not be identical with the final version published by ITU-T.

Remains valid – not updated: JVET-AN1019 VSEI with extensions and corrections (Draft 1) [J. Boyce, J. Chen, S. Deshpande, M. M. Hannuksela, S. McCarthy, G. J. Sullivan, H. Tan, Y.-K. Wang] (2025-10-17)

Primary editor: J. Boyce.

This was submitted to ITU consent on H.274 4th ed. It is noted that this may not be identical with the final version published by ITU-T.

No output: JVET-Axx1020 through JVET-Axx1099
Remains valid – not updated JVET-AA1100 Common Test Conditions for HM Video Coding Experiments [K. Sühring, K. Sharman]

This specifies only the CTC for non-4:2:0 colour formats. The corresponding document for VVC is JVET-T2013, with no unification yet. See note under JCTVC-P1006 above.

Links to test sequences need to be updated due to the change of the content server.

Remains valid – not updated: JVET-AN2001 VVC with extensions and corrections (Draft 1) [Y.-K. Wang, B. Bross, M. M. Hannuksela, G. J. Sullivan] (2025-10-17)

Primary editor: Y.-K. Wang.

This was submitted to ITU consent on H.266 4th ed. It is noted that this may not be identical with the final version published by ITU-T

JVET-AO1017 Support for additional SEI messages in AVC (Draft 5) [K. Sühring, J. Boyce, G. J. Sullivan, Y.-K. Wang] (2026-02-27)

Primary editor: K. Sühring

A preliminary DoC WG 5 N 384 on the DAM was reviewed and approved on Thursday 22 Jan. at 2200-2210. Progression to FDAM/FDIS integrated version was planned to be done in July 2026 at latest.

Changes are editorial improvements, interface changes, constraints, and bug fixes agreed at this meeting, including elements from:

ARCHIVE :
._JVET-AO1017-v2_noHighlights.docx ._JVET-AO1017-v2_withHighlightsEtc.docx JVET-AO1017-v2_noHighlights.docx JVET-AO1017-v2_withHighlightsEtc.docx
Decisions
JVET-AO1017 Support for additional VSEI messages in AVC (Draft 5)
Changes are editorial improvements, interface changes, constraints, and bug fixes agreed at this meeting, including elements from:
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