Patent ID: 11863789
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A non-transitory computer readable medium having stored thereon a computer program for coding video data, the computer program configured to cause one or more computer processors to:
receive video data comprising one or more tile group headers and subpictures, wherein the one or more tile group headers and subpictures include at least a picture order count, wherein the one or more tile group headers further includes a set of adaptive resolution change reference information;
calculate an access unit count based on at least the picture order count;
parse the video data to create symbols, wherein the symbols include one or more of: a quantization scaling matrix;
receive, in a picture parameter set, a number of subpictures in each picture and a delta value that is a difference between the number of subpictures in each picture and a number of rectangular slices in each picture;
determine that a picture, slice, or tile belongs to an access unit based on at least the access unit count; and
derive the number of rectangular slices in a picture based on the number of subpictures and the delta value.