1.2 Time-based Media

Provide alternatives for time-based media.


Time-based media basically means anything perceived over a period of time, which includes audio and video content.

Audio content can be heard, so the alternative needs to be something seen or felt (e.g. via refreshable Braille display). This can be done through:

Video (or visual) content can be seen, so the alternative needs to be something heard or felt:

A transcript for a video with audio and visual elements includes both the captions and audio descriptions in text format.

Note: While sign language is beneficial to the Deaf community, many individuals who obtain hearing loss or impairments over time do not learn sign language. Therefore, they primarily depend on text format to read what is said. Younger individuals who are learning to read may depend more on sign language.