Prediction method for a current block (Bc) belonging to a current image of a sequence of images with a view to the coding or the reconstruction of said current block (Bc), each image of said sequence comprising pixels to each of which is associated at least one image data, said method comprising the following steps: a) determining for the current block (Bc) a reference block (Bref) from at least one motion data, said motion data (DMVc) comprising a current motion vector (MVc) and one current reference image index (IDc) associated with said current block, b) verifying if the following conditions are fulfilled: - a majority of pixels of said reference block (Bref) are temporally predicted pixels and a prediction error calculated between the image data of said reference block (Bref) and the image data of a prediction block (Pred(Bref)) of said reference block (Bref) is less than a predefined threshold value, c) when said conditions are fulfilled, modifying said current motion vector (MVc) by adding to said at least one current motion vector (MVc) a motion vector (MV'1) associated with a majority of pixels of said reference block (Bref) and modifying said current reference image index (IDc) with the reference image index associated with said majority of pixels of said reference block, and e) generating a prediction block for said current block (Bc) from the modified current motion vector and from the modified current reference image index, and f) when said conditions are not fulfilled, generating a prediction block for said current block (Bc) from said current motion vector (MVc) and from said current reference image index. (IDc). a) determining for the current block (Bc) a reference block (Bref) from at least one motion data, said motion data (DMVc) comprising a current motion vector (MVc) and one current reference image index (IDc) associated with said current block, b) verifying if the following conditions are fulfilled: - a majority of pixels of said reference block (Bref) are temporally predicted pixels and a prediction error calculated between the image data of said reference block (Bref) and the image data of a prediction block (Pred(Bref)) of said reference block (Bref) is less than a predefined threshold value, - a majority of pixels of said reference block (Bref) are temporally predicted pixels and a prediction error calculated between the image data of said reference block (Bref) and the image data of a prediction block (Pred(Bref)) of said reference block (Bref) is less than a predefined threshold value, c) when said conditions are fulfilled, modifying said current motion vector (MVc) by adding to said at least one current motion vector (MVc) a motion vector (MV'1) associated with a majority of pixels of said reference block (Bref) and modifying said current reference image index (IDc) with the reference image index associated with said majority of pixels of said reference block, and e) generating a prediction block for said current block (Bc) from the modified current motion vector and from the modified current reference image index, and f) when said conditions are not fulfilled, generating a prediction block for said current block (Bc) from said current motion vector (MVc) and from said current reference image index. (IDc).