Parts 1 and 2 of MPEG-2 were developed in a collaboration with ITU-T, and they have a respective catalog number in the ITU-T Recommendation Series.
Časti 1 a 2 štandardu MPEG-2 boli vyvinuté v spolupráci s ITU-T, a majú svoje príslušné katalógové číslo v ITU-T sérii.