Success Criterion 1.2.3
Conformance level A

Media Alternative Describing an Older, Outdated Video Cut

1.2.3 — Audio Description or Media Alternative (Prerecorded)

Scenario

Setting

A subscription box service's account settings

What’s wrong

Alternative describes an older cut of the video (out of sync with current content).

Example

<video src="walkthrough.mp4"></video>

Why it matters

Blind and low-vision viewers who hear dialogue but miss unique visual information.

How to test

Compare the media alternative's content to the current video: if it describes an older version that no longer matches, it fails.

How to fix

An audio description or a full descriptive transcript covering all important visual information must be provided.

<video src="walkthrough.mp4">

  <track kind="descriptions" src="desc-en.vtt" srclang="en">

</video>

<a href="walkthrough-transcript.html">Full text alternative</a>

A descriptions track or full transcript covers on-screen information dialogue never mentions.

Outcome

On a subscription box service's account settings, this barrier is gone for blind and low-vision viewers who hear dialogue but miss unique visual information — they no longer have to work around this.

Who is affected