Patent ID: 11917207
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 14:
15. A video coding device comprising:
a processor configured to:
receive a bitstream that is a result of a sub-picture sub-bitstream extraction process from an input bitstream, the bitstream containing a picture parameter set (PPS) and only a subset of sub-pictures of the input bitstream to the sub-picture sub-bitstream extraction process;
determine a plurality of flags from the bitstream is set are set to specify that sub-picture information is present in the bitstream, wherein one of the flags is equal to one when slice identifiers (IDs) of a plurality of slices are signaled in the PPS and equal to zero when slice IDs of the plurality of slices are not signaled in the PPS;
obtain one or more sub-picture identifiers (IDs) for the subset of the sub-pictures based on the flags; and
decode the subset of the sub-pictures based on the sub-picture IDs.