• 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 

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

Why it matters

Deaf and hard-of-hearing viewers, and anyone watching video without sound.

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

Caption the video whenever it contains information beyond the page text.

<video src="demo.mp4">
  <track kind="captions" src="captions-en.vtt" srclang="en" label="English">
</video>

A <track> element with kind="captions" surfaces synchronized text for dialogue and important sounds.

Outcome

On a crowdfunding platform's campaign page, this barrier is gone for deaf and hard-of-hearing viewers — they can finish what they came here to do.

Who is affected

Deaf and hard-of-hearing viewers, and anyone watching video without sound.

Learn more

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