Patent ID: 11863762
Assignee: BYTEDANCE INC.
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 0:
1. A method of processing video data, comprising:
performing a conversion between a video comprising one or more layers comprising one or more video pictures comprising one or more subpictures and a bitstream of the video according to a rule,
wherein the rule defines network abstraction layer (NAL) units to be extracted from a bitstream during a subpicture sub-bitstream extraction process to output a sub-bitstream,
wherein the rule specifies that one or more inputs to the subpicture sub-bitstream extraction process include a target output layer set (OLS) index (targetOlsIdx) that identifies an OLS index of a target OLS and is equal to an index to a list of OLSs specified by a video parameter set,
wherein the one or more inputs satisfy a set of conditions,
wherein the rule specifies that the one or more inputs further include a target highest temporal identifier value (tIdTarget),
wherein the target highest temporal identifier value is in a range of 0 to a maximum number of temporal sublayers that are allowed to be present in a layer specified by the video parameter set,
wherein the maximum number of the temporal sublayers is indicated by a syntax element vps_max_sublayers_minus1 included in the video parameter set,
wherein the rule specifies that the one or more inputs further include a list of target subpicture index values denoted by subpicIdxTarget[i] for i from 0 to NumLayersInOls[targetOLsIdx]−1, whereby NumLayerInOls[i] specifies a number of layers in an i-th OLS.