Digital signals, such as image/video signals are converted between a first format and a second format by using Multiple Description Coding, whereby the second format conveys multiple descriptions (D1 to D4; D1′ to D4′) of the digital signals. In combination with MD coding, the signals are jointly subject to an error concealment process. Preferably, the error concealment process takes place in converting said digital signals from the second format conveying multiple descriptions to the first format.