Patent ID: 11924446
Assignee: BYTEDANCE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A non-transitory computer-readable storage medium storing instructions that cause a processor to:
perform a conversion between a video and a bitstream of the video,
wherein the bitstream comprises one or more layers comprising one or more pictures comprising one or more subpictures according to a rule,
wherein the rule specifies that one or more processes of a first supplemental enhancement information network abstraction layer (SEI NAL) unit of a target output subpicture sub-bitstream that is extracted during a subpicture sub-bitstream extraction process is performed and a second SEI NAL unit in the target output subpicture sub-bitstream is removed, when the second SEI NAL unit meets a condition,
wherein the one or more processes include generating the first SEI NAL unit,
wherein the one or more processes include adding the first SEI NAL unit to a picture unit that includes the second SEI NAL unit immediately after the second SEI NAL unit, and
wherein the one or more processes include extracting a scalable nested SEI message from a scalable nesting SEI message and including the extracted scalable nested SEI message in the first SEI NAL unit as a non-scalable-nested SEI message.