AAC
M4A amafayela
I-AAC (I-Advanced Audio Codec) ifomethi yokucindezela yomsindo esetshenziswa kabanzi eyaziwa ngekhwalithi yayo ephezulu yomsindo nokusebenza kahle. Isetshenziswa kakhulu ezinhlelweni ezahlukahlukene zemultimedia.
I-M4A ifomethi yefayela lomsindo ehlobene eduze ne-MP4. Inikeza ukucindezelwa komsindo kwekhwalithi ephezulu ngokusekelwa kwemethadatha, okuyenza ifanelekele izinhlelo zokusebenza ezihlukahlukene.