Motion compensation means for a time recursive filter includes a block motion estimation module (12) having an input video signal (1) and a input delayed output signal (6) of the time recursive filter. The block motion estimation module outputs block motion vectors (13) to at least one block splitting stage (14, 16, 18) which together with the input video signal (1) and the delayed output signal (6) of the time recursive filter is arranged to produce at least sub-block motion vectors (15, 17, 19) for input into image reconstruction means (9) to produce a motion-compensated image (11).