M4A
AAC mafayilo
M4A ndi mtundu wamafayilo omvera womwe umagwirizana kwambiri ndi MP4. Imapereka kupsinjika kwapamwamba kwamawu ndi chithandizo cha metadata, ndikupangitsa kuti ikhale yoyenera kugwiritsa ntchito zosiyanasiyana.
AAC (MwaukadauloZida Audio Codec) ndi ankagwiritsa ntchito audio psinjika mtundu amadziwika mkulu Audio khalidwe ndi dzuwa. Amagwiritsidwa ntchito kwambiri m'mapulogalamu osiyanasiyana a multimedia.