Patent ID: 11895306
Assignee: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of coding video data, comprising:
determining, during a conversion between a luma block of a video and a bitstream of the video, motion vectors of control points of the luma block based on an affine mode;
dividing the luma block into a first group of sub-blocks;
reconstructing the first group of sub-blocks of the luma block based on the motion vectors of the control points; and
reconstructing a second group of sub-blocks of a chroma block corresponding to the luma block,
wherein, in case that a color format of the luma block and the chroma block is 4:2:0 or 4:2:2, (1) each sub-block of the second group of sub-blocks has a second size with dimensions greater than 2, and (2) a first size of each sub-block of the first group of sub-blocks is equal to the second size of each sub-block of the second group of sub-blocks.