Success Criterion 1.2.2
Conformance level A
W3C reference F8

Captions That Skip Dialogue or Important Sound Effects

1.2.2 — Captions (Prerecorded)

Scenario

Setting

A hotel booking site's room-selection page

What’s wrong

Captions exist but leave out some spoken dialogue or important sounds (music, alarms, applause) — deaf users get an incomplete version.

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 the video with captions on and pause every 20-30 seconds: check every line of dialogue and every meaningful sound effect is captured — missing any fails.

How to fix

Captions must include all dialogue, speaker identification, and meaningful sound effects.

<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 hotel booking site's room-selection page, this barrier is gone for deaf and hard-of-hearing viewers — they get the same result as anyone else here.

Who is affected