Informationtechnology—Genericcodingofmovingpicturesandassociatedaudioinformation:SystemsThisRecommendation|InternationalStandardspecifiesthesystemlayerofthecoding.ItwasdevelopedprincipallytosupportthecombinationofthevideoandaudiocodingmethodsdefinedinParts2and3ofISO/IEC13818.