Patent ID: 11949893
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method implemented in a decoder, the method comprising:
receiving a bitstream comprising a sequence parameter set (SPS), a plurality of sub-pictures partitioned from a picture, a plurality of sub-picture level indicators including a plurality of first sub-picture level indicators, a nesting supplemental enhancement information (SEI) message containing sub-picture identifiers (IDs) of the sub-pictures, and a second sub-picture level indicator, wherein each first sub-picture level indicator indicates a level for each sub-picture, each level specifying resource requirements for decoding an associated sub-picture sequence, wherein the second sub-picture level indicator indicates a sub-picture bitrate, and wherein the SPS comprises a separate sub-picture ID, sub-picture size, and sub-picture position for each of the plurality of sub-pictures;
parsing the bitstream to obtain the sub-picture level indicators and a current sub-picture;
allocating resources to decode the current sub-picture based on the sub-picture level indicators; and
decoding the current sub-picture to create a video sequence by employing the allocated resources.