US Patent 11778226 Storage of motion information for affine mode

The present disclosure relates to storage of motion information for affine mode. A video processing method is provided, including: selecting, during a current affine calculation step in a conversion between a current block and a bitstream representation of the current block, one or more parameters of a set of affine model parameters; storing the one or more parameters for the current block; and performing, based on the one or more parameters, the conversion between the current block and the bitstream representation of the current block.