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

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 Reads

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

Raghavendra Satish Peri empowers enterprises with his expertise in digital accessibility and marketing. Through his impactful work, he collaborates with both small businesses and large enterprises, spearheading digital transformation initiatives. Raghavendra is the author behind the influential Accessibility Blog hosted at DigitalA11Y.com, where he delves into the intricate realm of digital accessibility and its significance.
Passionate about fostering change within the tech landscape, Raghavendra actively inspires local tech communities through engaging meetups and mentorship. He is the driving force behind HelloA11Y.com, a vibrant platform that unites accessibility professionals, developers, and enthusiasts, propelling the adoption of accessible practices.
Beyond the digital realm, Raghavendra seeks diverse experiences. You might find him exploring various cuisines at local cafes and restaurants or immersing himself in thought-provoking audio books. His insights and musings also find a home on his Personal Blog at raghava.in, where he shares his thoughts and experiences with a wider audience.

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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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