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

Claim 7:
8. A method implemented by an encoder, the method comprising:
encoding an input bitstream containing a set of sub-pictures and a picture parameter set (PPS);
performing a sub-picture sub-bitstream extraction process on the input bitstream to create an extracted bitstream containing the PPS and only a subset of the sub-pictures of the input bitstream;
encoding, into the extracted bitstream, one or more sub-picture identifiers (IDs) for the subset of the sub-pictures in the extracted bitstream;
setting a plurality of flags in the extracted bitstream to indicate that sub-picture information related to the subset of the sub-pictures is present in the extracted bitstream, wherein the 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; and
storing the extracted bitstream for communication toward a decoder.