US 11,968,366 B2
Video encoding method and apparatus, video decoding method and apparatus, device, and storage medium
Hongbin Zhang, Guangdong (CN); Xiang Li, Guangdong (CN); Guichun Li, Guangdong (CN); and Shan Liu, Guangdong (CN)
Assigned to TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, Shenzhen (CN)
Filed by TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, Guangdong (CN)
Filed on Oct. 28, 2021, as Appl. No. 17/452,715.
Application 17/452,715 is a continuation of application No. PCT/CN2020/134608, filed on Dec. 8, 2020.
Claims priority of application No. 201911424021.5 (CN), filed on Dec. 31, 2019.
Prior Publication US 2022/0053191 A1, Feb. 17, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/105 (2014.01); H04N 19/126 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01)
CPC H04N 19/126 (2014.11) [H04N 19/105 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/70 (2014.11)] 19 Claims
OG exemplary drawing
 
1. A method for video decoding, comprising:
determining a chroma format of a video frame;
determining, for a first quantization matrix (QM) that is a chroma QM currently being decoded, a size of the first QM according to the determined chroma format and a larger one of a width and a height of a luma transform block (TB); and
decoding the first QM when the determined size of the first QM is greater than zero.