Audio Description (AD) is for individuals with visual disabilities and refers to the insertion of audio content to relay important visual details. Information in an audio description should be provided in a way that does not interfere with other audio such as dialog or sound effects. Audio description allows a person with vision impairments to fully understand the visual content delivered via video or live performance.
- WCAG 2.0, Level AA guidelines are available for providing audio that describes the important video content and describing it as such where the audio description is a separate MP3 linked in close proximity to the video option.
- Additionally, there are techniques for providing an alternative for time-based media for video-only content
- Penn State White Paper discusses various methods for accomplishing audio described videos in the education environment. Information around pros and cons for each method is included.
- Captioning, Transcripts and Audio Description (WebAIM)