METHODS AND DEVICES FOR ENCODING OR DECODING VIDEO STRINGS AND COMPUTER-READED, INVARIANT MATERIALS

Abstract

The invention refers to methods and devices for encoding or decoding video sequences, including encoding or decoding video sequences using the 4:4:4 chromatic format, or encoding or decoding video sequences using the 4:2:2 chromatic format, where, when encoding or decoding a video sequence using the 4:4:4 chromatic format, the affine motion vector of a 4x4 chromatic block is reproduced by using an operation other than averaging and linking the affine motion vector to the 4x4 chromatic block at the same position, and when encoding or decoding a video sequence using the 4:2:2 chromatic format, each 4x4 chromatic block is linked to two 4x4 chromatic blocks at the same position such that the affine motion vector of a 4x4 chromatic block is the average of the motion vectors of the two chromatic blocks at the same position.