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AHG9: On the DRAP and EDRAP indication SEI messages
Abstract
This contribution proposes the following changes to the dependent random access point (DRAP) indication and the extended DRAP indication SEI messages:
JVET-V0065 AHG9: On the DRAP and EDRAP indication SEI messages [Y.-K. Wang, L. Zhang, Y. Wang (Bytedance)]
This contribution was discussed in sesssion 9 at 1545 on Thursday 22 April (chaired by GJS).
This contribution proposes the following changes to the dependent random access point (DRAP) indication and the extended DRAP indication SEI messages:
- The semantics of the DRAP indication SEI message is changed such that the semantics is clear when the SEI message is applied in the context of a multi-layer bitstream.
- Change edrap_rap_id_in_clvs to edrap_rap_id_minus1 and the value plus 1 specified the random access point (RAP) picture ID.
- The semantics of the EDRAP SEI message is changed to allow two IRAP pictures to have the same RapPicId value, and also to allow two EDRAP pictures associated with different IRAP pictures to have the same RapPicId value, while disallowing RAP pictures (IRAP or EDRAP pictures) within an IRAP period to have the same RapPicId value.
- The semantics of edrap_ref_rap_id[ i ] is changed to clarify that a RAP picture that may be referenced by a current EDRAP picture shall be either the IRAP picture associated with the current EDRAP picture or an EDRAP picture associated with the same IRAP picture as the current EDRAP picture.
The text changes for the proposals in JVET-V0065 (this contribution) are included in the attachment to JVET-V0063.
Decision (cleanup & expression of existing intent): Adopt.
References:
PATENTS:
20240129488
1.00
WO/2023/274112
1.00
20240137526
1.00
WO/2023/274111
1.00
20250106400
1.00
WO/2023/200879
1.00
20240129536
0.70
WO/2023/137321
0.30
Decisions
adopted
Decision (cleanup & expression of existing intent): Adopt.
Citation