Motion vector generation apparatus and method

A motion vector generation apparatus, and a method thereof. In the apparatus, a weight calculation part can adaptively calculate a predetermined weight corresponding to at least one of respective inputted candidate motion vectors, and a final motion vector calculation part can adaptively generate a final motion vector by applying the calculated predetermined weight to at least one of the corresponding candidate motion vectors. The generated final motion vector is used for motion compensation of the current block to be interpolated. Therefore, block artifacts can be prevented by estimating a plurality of motion vectors for motion compensation and adaptively applying the weight to the estimated motion vectors.