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Understanding SC 1.2.1 Audio-only and Video-only (Prerecorded)

Avatar for Raghavendra Satish PeriAuthored By :Raghavendra Satish Peri Last Updated : Perceivable, WCAG
1.2.1 Audio-only & Video-only Content
1.2.1 Audio-only & Video-only Content

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

  • 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.

This success criterion requires that audio-only & video-only content are provided with alternative method of conveying information. A text transcript can be provided for audio track & text transcript or audio track can be provided for a video that doesn’t have an audio. Transcripts help all kind of users like blind, hard of hearing, deaf & deaf blind to perceive content & understand it easily.
An example of audio-only content is podcast. A video-only content is a video that is silent.

Points to Ponder

  • Provide text transcripts for audio tracks.
  • Provide either text transcript or an audio track for a silent video.
  • If an audio is provided for video then text transcript is not required. (Exception)

Related WCAG Articles

References

Read Next: Understanding SC 1.2.2 Captions (Prerecorded)
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Avatar for Raghavendra Satish Peri

Raghavendra Satish Peri is a digital Transformation specialist working with small & large enterprises in the areas of digital accessibility & digital marketing. He authors an Accessibility Blog at DigitalA11Y.com & is galvanizing the adoption of accessibility by inspiring the local tech community with meetups and mentorship. He propelled this thought by founding HelloA11y.com, a community of accessibility professionals, developers, and enthusiasts. When away from his computer, Raghava can be found at local cafes & restaurants sampling cuisines, attending local meetups, listening to audio books, or writing on his Personal Blog at raghava.in.

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One Comment

  1. I love the way you clarified the success criteria. It’s really precise, clear and easily understandable. I do appreciate your efforts.

    Reply

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