1.2.1 Audio-only and Video-only (Prerecorded)
Conformance level: A
Criterion released in WCAG version: 2.0
Official description of the success criterion
For prerecorded audio-only and prerecorded video-only media, the following are true, except when the audio or video is a media alternative for text and is clearly labeled as such:
- Prerecorded Audio-only: An alternative for time-based media is provided that presents equivalent information for prerecorded audio-only content.
- Prerecorded Video-only: Either an alternative for time-based media or an audio track is provided that presents equivalent information for prerecorded video-only content.
What to do?
Provide an alternative to audio-only and video-only content.
Why is it important?
Ensures that users who cannot hear or see the content can still understand it.
Common pitfalls
Common issues with this are failing to provide a text transcript for audio-only content or a text or audio description for video-only content.
How to test for it?
Check all the audio-only and video-only content for alternatives. Make sure the alternative
- exists and
- presents the same information as the media.