Patent ID: 11936880
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method comprising:
receiving video information corresponding to a plurality of subpictures within a picture;
identifying first subpictures from among the plurality of subpictures, the first subpictures being picture-in-picture regions extracted from a base layer of the video information;
enlarging and encoding the first subpictures in a high quality mode as subpictures, respectively, in a plurality of enhancement layers;
encoding remaining subpictures of the plurality of subpictures in a low quality mode in the base layer; and
outputting a video parameter set including a plurality of output layer sets, each output layer set comprising one or more encoded subpictures from the base layer and one or more encoded subpictures from the enhancement layers, each output layer set including, for each output layer, subpicture identifiers of the encoded subpictures in the output layer and profile-tier-level information for the output layer,
wherein subpictures in the enhancement layer are non-overlapping,
wherein the video parameter set includes a plurality of flags;
wherein a first flag of the plurality of flags indicates whether subpicture partitions are aligned across layers; and
wherein a second flag of the plurality of flags indicates whether subpicture identifiers are present in each layer.