• Success Criterion 1.2.2
  • Conformance level A
  • W3C reference F75

Video With Extra Content the Captions Never Include

1.2.2 — Captions (Prerecorded)

Scenario

Setting

A crowdfunding platform's campaign page

What’s wrong

A video contains more information than the page text but has no captions — deaf users miss the extra content.

Example 

<p>Our smart backpack charges your phone and keeps your laptop safe.</p>
<!-- Video also shows and narrates a hidden RFID-blocking pocket never
     mentioned in the text above, with no captions -->
<video src="/campaign/backpack-demo.mp4" controls></video>

Why it matters

A deaf backer reading only the campaign text never learns about the RFID-blocking pocket the founder demonstrates on video, so they can't factor it into their pledge decision.

How to test

Play any prerecorded video with audio and check for a CC/captions control: if none exists at all, it fails.

How to fix

Whenever a video adds information beyond the surrounding text, it needs captions covering that extra content.

<p>Our smart backpack charges your phone and keeps your laptop safe.</p>
<video src="/campaign/backpack-demo.mp4" controls>
  <track kind="captions" src="/campaign/backpack-demo.vtt" srclang="en" label="English">
</video>

Outcome

A deaf backer learns about the RFID-blocking pocket from the captions and pledges at the higher tier.

Who is affected

Deaf and hard-of-hearing backers relying on the written pitch miss product details that exist only in the video's spoken narration.

Learn more

Related scenarios