Patent ID: 11956454
Assignee: BYTEDANCE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method for storing a bitstream of a video, comprising:
generating the bitstream of the video; and
storing the bitstream in a non-transitory computer-readable medium, wherein the bitstream comprises one or more pictures comprising one or more subpictures according to a rule,
wherein the rule specifies that, responsive to a condition that no subpicture identifier mapping is indicated in the bitstream and a subpicture sub-bitstream extraction process extracts a subpicture sequence that is identified by a subpicture index greater than zero, a rewriting operation is performed on referenced one or more sequence parameter sets during the subpicture sub-bitstream extraction process by which a target output sub-bitstream is extracted from the bitstream, and
wherein the rewriting operation comprises including a subpicture identifier mapping into the referenced one or more sequence parameter sets.