US 12,262,037 B2
Method for adaptation parameter set reference and constraints in coded video stream
Byeongdoo Choi, Palo Alto, CA (US); Shan Liu, San Jose, CA (US); and Stephan Wenger, Hillsborough, CA (US)
Assigned to TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed by TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed on Jun. 29, 2023, as Appl. No. 18/216,192.
Application 18/216,192 is a continuation of application No. 17/733,311, filed on Apr. 29, 2022, granted, now 11,765,371.
Application 17/733,311 is a continuation of application No. 17/038,541, filed on Sep. 30, 2020, granted, now 11,343,524, issued on May 24, 2022.
Claims priority of provisional application 62/954,096, filed on Dec. 27, 2019.
Prior Publication US 2024/0048743 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/44 (2014.01); H04N 19/105 (2014.01); H04N 19/169 (2014.01); H04N 19/174 (2014.01)
CPC H04N 19/44 (2014.11) [H04N 19/105 (2014.11); H04N 19/174 (2014.11); H04N 19/188 (2014.11)] 17 Claims
OG exemplary drawing
 
1. A method of generating an encoded video bitstream using at least one processor, the method comprising:
obtaining video data corresponding to a picture unit;
generating a picture header (PH) network abstraction layer (NAL) unit corresponding to the picture unit;
generating at least one video coding layer (VCL) NAL unit corresponding to the picture unit;
generating a coded video sequence (CVS) based on the PH NAL unit, the at least one VCL NAL unit, and an adaptation parameter set (APS) included in an APS NAL unit; and
outputting the encoded video bitstream including the coded video sequence,
wherein the APS NAL unit is available to the at least one processor before at least one video coding layer (VCL) NAL unit included in the picture unit, and
wherein the APS NAL unit is available to a decoder of the encoded video bitstream prior to being referenced by one or more picture headers (PHs) or one or more coded slice NAL units included in the CVS.