Success Criterion 1.2.4
Conformance level AA

Live Captions That Cut Out Partway Through the Event

1.2.4 — Captions (Live)

Scenario

Setting

A social media platform's settings menu

What’s wrong

Captions dropped mid-event (caption service fails, no fallback) for substantive portions.

Example

On a social media platform's settings menu, a visitor hits this wall: captions dropped mid-event (caption service fails, no fallback) for substantive portions.

Why it matters

Deaf and hard-of-hearing participants in live streams, classes, and meetings. Here, on a social media platform's settings menu, the result is they miss information that's only conveyed visually.

How to test

Watch a full live session start to finish: any stretch of missing/dropped captions during substantive content is a fail.

How to fix

Readable, reasonably accurate real-time captions must run for the entire live event.

Outcome

After the fix, the same visitor to a social media platform's settings menu can now get the same information as everyone else.

Who is affected

Deaf and hard-of-hearing participants in live streams, classes, and meetings.

Learn more

Understanding Understanding document (opens in a new tab)