• Success Criterion 1.2.2
  • Conformance level A

Multi-Speaker Video Captions With No Speaker Labels

1.2.2 — Captions (Prerecorded)

Scenario

Setting

An e-book reader's library page

What’s wrong

Captions missing speaker identification in multi-speaker 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 video with multiple speakers: if captions don't indicate who is speaking (name or label), it fails.

How to fix

Synchronized captions must be provided covering all dialogue, speaker identification, and important sounds.

<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 an e-book reader's library 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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