Success Criterion 1.2.2
Conformance level A

Captions Missing Cues for Music, Applause, or Alarms

1.2.2 — Captions (Prerecorded)

Scenario

Setting

A car-rental site's checkout flow

What’s wrong

Missing meaningful non-speech information: [music], [applause], [door slams], tone indicators where meaning depends on them.

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 and listen for music, applause, or sound effects that carry meaning: if the captions don't include a text cue (e.g., '[applause]'), 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 a car-rental site's checkout flow, this barrier is gone for deaf and hard-of-hearing viewers — they reach the same outcome without extra effort.

Who is affected