Video data coding method and device, electronic equipment and storage medium

The invention relates to a video data coding method and device, electronic equipment and a storage medium, and the method comprises the steps: carrying out the motion compensation processing of a current coding block, and obtaining a first prediction block corresponding to the current coding block; performing illumination compensation processing on the first prediction block by adopting an illumination compensation processing mode to obtain a second prediction block corresponding to the first prediction block; performing rate-distortion optimization on the first prediction block and the second prediction block to obtain a rate-distortion cost corresponding to the first prediction block and a rate-distortion cost corresponding to the second prediction block; determining a target prediction block from the first prediction block and the second prediction block according to the rate distortion cost; determining use information for the illumination compensation processing mode according to the target prediction bl