FIELD: video encoding and decoding.
SUBSTANCE: first high-level syntactic element in the sequence level is encoded in the sequence header to indicate whether both affine motion prediction and at least one encoding tool are disabled. At least one coding tool includes a count-by-count correction of affine motion prediction samples. Depending on the first high-level syntax element, one or more second high-level syntax elements are encoded indicating the establishment of a sequence level or an image level with respect to the encoding resolution of each of the at least one encoding tool. When the first high-level syntax element indicates that both the affine motion prediction and at least one encoder are not disabled, determine two or three reference point motion vectors for the target block to be encoded, and generate affine prediction samples for each of the sub-blocks by performing sub-block affine motion prediction.
EFFECT: increased efficiency of video coding.
13 cl, 22 dwg
