WCAG 2.0 · Level AA · Perceivable
WCAG 1.2.4 — Captions (Live)
Live audio content in synchronized media needs real-time captions.
WCAG 1.2.4 at a glance
Level AA · Principle: Perceivable · Added in WCAG 2.0. Level AA is the conformance target for the ADA, EAA, and Section 508.
What it means
Live audio content in synchronized media needs real-time captions.
Who it helps
Deaf and hard-of-hearing users attending live streams, webinars, and events.
Common failures
- Live webinars or streams with no real-time captions
How to meet WCAG 1.2.4
- Provide live captioning (CART or automated with a human monitor) for live media
How to test it
Manual — verify captions appear during live broadcasts.