US 12,278,946 B2
Methods and apparatuses for signaling picture header
Jiancong Luo, Skillman, NJ (US); Jie Chen, Beijing (CN); and Yan Ye, San Diego, CA (US)
Assigned to Alibaba Group Holding Limited, Grand Cayman (KY)
Filed by ALIBABA GROUP HOLDING LIMITED, Grand Cayman (KY)
Filed on Mar. 26, 2021, as Appl. No. 17/214,722.
Claims priority of provisional application 63/000,470, filed on Mar. 26, 2020.
Prior Publication US 2022/0060684 A1, Feb. 24, 2022
Int. Cl. H04N 19/105 (2014.01); H04N 19/169 (2014.01); H04N 19/172 (2014.01); H04N 19/46 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/172 (2014.11); H04N 19/188 (2014.11); H04N 19/1883 (2014.11); H04N 19/46 (2014.11); H04N 19/70 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A computer-implemented method for processing video content, comprising:
determining whether a picture-header (PH) network-abstraction-layer (NAL) unit is present in a picture unit (PU);
determining, based on presence or absence of the PH NAL unit in the PU, whether the PU has only one video-coding-layer (VCL) NAL unit and whether a first VCL NAL unit of the PU is the VCL NAL unit in the PU, wherein, in response to the PH NAL unit being not present in the PU, the PU is determined to have only one VCL NAL unit and the first VCL NAL unit of the PU is determined to be the VCL NAL unit in the PU; and
determining whether the first VCL NAL unit of the PU is the first VCL NAL unit of an access unit (AU) containing the PU.