1.2.1 Audio-only and Video-only (Prerecorded) Level A

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Conformance Levels

Description

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.

[View on W3C.org]

Questions & Answers

Does WCAG allow autoplay of videos?

Does WCAG 2.1 allow autoplay of videos, as long as no sound is played? Do these videos not require controls at all, as long as they are shorter than 5 seconds? Or does WCAG 2.1 require controls for any videos - regardless of length and...

  • audio
  • video
  • wcag

What is Time-based media?

I see that one of the web accessibility guidelines is 'Time-based Media'. What is that?

  • flashes
  • images
  • video
  • youtube