Patent ID: 11882270
Assignee: HFI INNOVATION INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. An apparatus for decoding a video sequence, the apparatus comprising one or more electronic circuits or processors arranged to:
receive a video bitstream associated with a current picture, wherein when a current subpicture of the current picture, with nuh_layer_id equal to a particular value layerId and subpicture index equal to a particular value subpicIdx, is a RADL (Random Access Decodable Leading) subpicture, reference picture list 0 or reference picture list 1 associated with the current subpicture is mandatorily required to contain no active entry corresponding to:
a picture for which a value of nuh_layer_id is not equal to layerId containing a RASL (Random Access Skipped Leading) subpicture with the subpicture index equal to subpicIdx; or
a RASL picture for which the value of nuh_layer_id is not equal to the layerId and a value of sps_num_subpics_minus1 is equal to 0:
and

decode the current subpicture utilizing information comprising the active entries in the reference picture list 0 or the reference picture list 1.