VIDEO DECODING METHODS

Abstract

The invention relates to a method of solving a video, which includes the following steps: identifying the affine parameter of the current block if the prediction mode of the current block is affine; determining the motion vectors of multiple sub-blocks using the affine parameter of the current block, in which multiple sub-blocks are contained within the current block; determining the typical brightness motion vector for four sub-blocks in the number of sub-blocks by using a set between the first and second sets, in which the four sub-blocks include the first sub-block, the second sub-block, the third sub-block, and the fourth sub-block; determining the average brightness motion vector which will be the motion vector of the current sub-block corresponding to the four sub-blocks;and perform forecasting on the current light intensity sub-block by using defined motion vectors, where the first set includes the motion vector of the first light intensity sub-block and the motion vector of the fourth light intensity sub-block, and excludes at least one vector among the motion vectors of the second light intensity sub-block and the motion vector of the third light intensity sub-block; where the second set includes the motion vector of the second light intensity sub-block and the motion vector of the third light intensity sub-block, and excludes at least one vector among the motion vectors of the first light intensity sub-block and the motion vector of the fourth light intensity sub-block.