1.1.1 Non-text Content (Level A)
1.2.1 Audio-only and Video-only (Prerecorded) (Level A) 1.2.2 Captions (Prerecorded) (Level A) 1.2.3 Audio Description or Media Alternative (Prerecorded) (Level A) 1.2.4 Captions (Live) (Level AA) 1.2.5 Audio Description (Prerecorded) (Level AA) 1.2.6 Sign Language (Prerecorded) (Level AAA) 1.2.7 Extended Audio Description (Prerecorded) (Level AAA) 1.2.8 Media Alternative (Prerecorded) (Level AAA)