QUALCOMM Incorporated
Memory constraint for adaptation parameter sets for video coding

Abstract:

A video decoder is configured to decode one or more first adaptation parameter set (APS) indices for a current picture that indicate one or more first APSs that may be used for decoding the current picture. The video decoder may determine, for a block of a sub-picture of the current picture, an APS from the one or more first APSs indicated for the current picture, and decode the block of the sub-picture using the determined APS. In some examples, the video decoder may determine, for the block of the sub-picture of the current picture, the APS from the one or more first APSs indicated for the current picture without decoding any syntax elements, at a sub-picture level, indicating APSs that may be used for decoding the sub-picture.