1. A method of coding a video sequence in the form of a base level and an refinement level, a group of pictures of the base level comprising intra coded or mono-predicted end images (I,P) and bi-predicted images (B 1 , B 2 , B 3 ), the refinement level comprising at least one image (E 2 , E 4 ,. .. , E 16 ) with no temporal correspondent in the base level, characterized by a step (S 1010 ) of predictive coding of said image with no temporal correspondent (E 2 , E 4 ,. .. , E 16 ) by making reference to a plurality of images, each image of said plurality being an image of the refinement level with no temporal correspondent in the base level (E 4 , E 8 , E 12 , E 14 ) or an image of the refinement level (E 1 , E 17 ) corresponding temporally to an end image ( 1 ,P).