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1.2.3 Audio Description or Media Alternative (Prerecorded) – Level A

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.

Understanding Success Criterion 1.2.3: Audio Description or Media Alternative (Prerecorded) by the W3C

Checklist – Components

Video – Recordings

If all of the information in the video track is also in the audio track, no audio description is necessary.

WCAG 1.2.3, 1.2.5, and 1.2.8 overlap, so that you can chose the minimum conformance level for your situation. In other words…

Choose one of the following techniques to meet the success criteria.
Did I provide an audio description track for the video?High
Does the prerecorded media have a text transcript?High