Patent ID: 11962936
Assignee: LEMON INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. An apparatus for processing visual media data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:
perform a conversion between visual media data and a bitstream of the visual media data according to a format rule,
wherein the format rule specifies that a supplemental enhancement information (SEI) message that refers to a second type of dependent random access point (DRAP) picture which is different from a first type of DRAP picture is included in the bitstream, and
wherein the format rule further specifies that the SEI message includes a syntax element indicating a number of intra random access point (IRAP) pictures or second type of DRAP pictures that are within a same coded layer video sequence (CLVS) as the second type of DRAP picture and are allowed to be included in active entries of a reference picture list of the second type of DRAP picture, and
wherein the first type of DRAP picture is a picture that relies on an IRAP picture and is associated with the first type of SEI message, which is a first DRAP indication SEI message,
wherein the second type of DRAP picture is a picture that is allowed to rely on an IRAP picture or another DRAP picture and is associated with the second type of SEI message, which is a second DRAP indication SEI message.