US 11,943,459 B2
Encoder, a decoder and corresponding methods of signaling and semantics in parameter sets
Biao Wang, Shenzhen (CN); Semih Esenlik, Munich (DE); Anand Meher Kotra, Munich (DE); Elena Alexandrovna Alshina, Munich (DE); and Han Gao, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Dec. 15, 2022, as Appl. No. 18/066,863.
Application 18/066,863 is a continuation of application No. 17/681,003, filed on Feb. 25, 2022, granted, now 11,533,497.
Application 17/681,003 is a continuation of application No. PCT/CN2021/078313, filed on Feb. 27, 2021.
Claims priority of application No. PCT/EP2020/055269 (WO), filed on Feb. 28, 2020; application No. PCT/EP2020/065989 (WO), filed on Jun. 9, 2020; and application No. PCT/EP2020/065999 (WO), filed on Jun. 9, 2020.
Prior Publication US 2023/0199203 A1, Jun. 22, 2023
Int. Cl. H04N 19/31 (2014.01); H04N 19/136 (2014.01); H04N 19/187 (2014.01); H04N 19/70 (2014.01); H04N 19/119 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/31 (2014.11) [H04N 19/136 (2014.11); H04N 19/187 (2014.11); H04N 19/70 (2014.11); H04N 19/119 (2014.11); H04N 19/176 (2014.11)] 11 Claims
OG exemplary drawing
 
1. A method of encoding a video bitstream implemented by an encoding device, the method comprising:
determining a maximum number of temporal sublayers in a video bitstream is greater than one;
determining presence of a decoded picture buffer (DPB) parameters syntax structure in a sequence parameter set (SPS), wherein the SPS is encoded in the video bitstream and contains syntax elements that apply to a video sequence;
encoding a value of a first syntax element into the SPS based on the determining of the presence of the DPB parameters syntax structure in the SPS, wherein the value of the first syntax element is used to specify whether the DPB parameters syntax structure is present in the SPS;
determining presence of a DPB syntax element in the DPB parameters syntax structure, when determining that the DPB parameters syntax structure is present in the SPS and the maximum number of the temporal sublayers in the video bitstream is greater than one, wherein the DPB syntax element is applied to a temporal sublayer in the video sequence; and
encoding a value of a second syntax element into the SPS based on the determining of the presence of the DPB syntax element in the DPB parameters syntax structure, wherein the value of the second syntax element is used to specify the presence of the DPB syntax element in the DPB parameters syntax structure.