MP4
M4R amafayela
I-MP4 (MPEG-4 Ingxenye 14) iyifomethi yesiqukathi se-multimedia engagcina ividiyo, umsindo, nemibhalo engezansi. Isetshenziswa kabanzi ukusakaza nokwabelana ngokuqukethwe kwe-multimedia.
I-M4R ifomethi yefayela esetshenziselwa ukuncenceza kwe-iPhone. Empeleni iyifayela lomsindo le-AAC elinesandiso esihlukile.