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Standard or regulation

Understanding Success Criterion 1.2.4: Captions (Live)

W3C Web Accessibility Initiative, W3C, 2023

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Read on October 16, 2026

What it is
The W3C's explanatory page for the WCAG 2.2 success criterion that requires captions on live video with sound.
How much weight it carries
Official W3C guidance. It explains the criterion and its conformance level, and is not itself the legal text of any national law.
Understanding Success Criterion 1.2.4: Captions (Live) | Yap