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WCAG 1.2.8: Media Alternative (Prerecorded) (Level AAA)

Think of a video as a story, with visuals and audio weaving together to create meaning. But for someone who can’t see the visuals or hear the audio, much of the story gets lost.

Media Alternative (Prerecorded) ensures that everyone can follow the narrative by providing a complete text-based alternative that describes both the audio and visual elements, so nothing is left out.

Who this impacts

  • People who are deaf-blind: A text alternative is crucial for accessing content that relies on both sight and sound.
  • People using Braille displays or screen readers: A written description helps convey the content in a format that can be read aloud or displayed.
  • Anyone in low-bandwidth situations: In places where streaming video isn’t feasible, a text alternative provides an accessible option.

How to meet Media Alternative (Prerecorded)

  1. Write a comprehensive text alternative: Cover dialogue, important sounds, visual actions, and on-screen text. Aim to describe the content as though the reader can neither see nor hear.
  2. Link it clearly: Make sure the alternative is easy to access, such as placing it immediately below the video or in a dedicated section.
  3. Update the text as needed: If the video content is edited, make sure the text alternative reflects any changes to maintain accuracy.

Example

Check out our Time-based Media transcript (or any of the other guidelines) as it has a full transcript with descriptions of visuals.

Top tips

  • Consider the format: HTML-based text can be more accessible than downloadable files (like PDFs).
  • Break down the content into sections: Use headings and subheadings to organize longer descriptions for better readability.
  • Write with clarity: Make sure the text alternative is detailed but not overwhelming; focus on key elements.
  • Provide context: Describe the purpose of visual elements and their role in the content, not just what they look like.
  • Use plain language: Ensure the text is accessible to a wide range of readers, avoiding overly technical jargon.

Further reading

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