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

Claim 0:
1. A method implemented by a decoder, the method comprising:
receiving 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;
determining a plurality of flags from the bitstream 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;
obtaining one or more sub-picture identifiers (IDs) for the subset of the sub-pictures based on the flags; and
decoding the subset of the sub-pictures based on the sub-picture IDs.