DRAFT: Inaccessible Media Page
Good and Bad Demonstration
Audio Description or Media Alternative (Prerecorded)
An alternative for time-based media or audio description of the prerecorded video content is provided for synchronized media, except when the media is a media alternative for text and is clearly labeled as such.
The intent of this Success Criterion is to enable people who are deaf or hard of hearing to watch synchronized media presentations.
Audio-only / Video-only
The intent of this Success Criterion is to make information conveyed by prerecorded audio-only and prerecorded video-only content available to all users.
The mapping of HTML to the Accessibility Api by browsers is pretty straight forward.
HTML elements with default WAI-ARIA role semantics MUST be mapped to platform accessibility APIs according to those WAI-ARIA roles' mappings. HTML Accessibility API Mappings 1.0 - Role list