US 12,407,840 B2
Mixed NAL unit picture constraints in video coding
Ye-Kui Wang, San Diego, CA (US); and F N U Hendry, San Diego, CA (US)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on May 29, 2024, as Appl. No. 18/677,600.
Application 18/677,600 is a continuation of application No. 17/568,517, filed on Jan. 4, 2022, granted, now 12,041,249.
Application 17/568,517 is a continuation of application No. PCT/US2020/041035, filed on Jul. 7, 2020.
Claims priority of provisional application 62/871,524, filed on Jul. 8, 2019.
Prior Publication US 2024/0422331 A1, Dec. 19, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/169 (2014.01); H04N 19/105 (2014.01); H04N 19/107 (2014.01); H04N 19/172 (2014.01); H04N 19/174 (2014.01); H04N 19/70 (2014.01); H04N 19/117 (2014.01)
CPC H04N 19/188 (2014.11) [H04N 19/105 (2014.11); H04N 19/107 (2014.11); H04N 19/172 (2014.11); H04N 19/174 (2014.11); H04N 19/70 (2014.11); H04N 19/117 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A method for storing a coded video bitstream, the method comprising:
obtaining the coded video bitstream comprising a current picture that has more than one video coding layer (VCL) network abstraction layer (NAL) units that do not have a same NAL unit type;
obtaining active entries of reference picture lists for slices positioned in a sub-picture A (subpicA) in subsequent pictures following the current picture in decoding order, wherein the active entries do not include a reference to any reference picture preceding the current picture in decoding order when the subpicA at the current picture is associated with an intra-random access point (IRAP) NAL unit type, wherein all slices of the current picture positioned in subpicA are associated with the same NAL unit type; and
storing the coded video bitstream in at least one storage medium based on the reference picture list active entries.