Patent ID: 11949855
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of video encoding in an encoder, comprising:
receiving sample values of a current block in a current picture, the current block being divided into a plurality of sub-blocks to be coded according to a sub-block based inter prediction mode;
determining pieces of sub-block motion information for the plurality of sub-blocks, respectively;
generating, according to the pieces of sub-block motion information, respective predictors of the plurality of sub-blocks;
selecting, from among the plurality of sub-blocks of the current block, a representative sub-block at a preset position in the current block to represent the current block in a history-based motion vector prediction (HMVP) candidate list;
adding, to the HMVP candidate list, only sub-block motion information of the selected representative sub-block as an HMVP candidate representative of the current block; and
encoding the sample values of the current block according to the predictors of the plurality of sub-blocks and including encoded data of the current block in a bitstream for output.