Embodiments of the present invention re-use at least a portion of motion information of the corresponding block for the motion information of the current block if a corresponding reference picture corresponding to a reference picture pointed by the corresponding block is in a current reference picture list of the current block. If the corresponding reference picture is not in the current reference picture list of the current block, the motion information of the current block is determined using an alternative process, where at least a portion of the motion information, which was used in the previous case, is not re-used for the current block according to the alternative process.