Level AAASince WCAG 2.0
1.2.9 Audio-only (Live)
Guideline 1.2: Time-based Media – Audio and video need captions, descriptions or transcripts.
What does the rule require?
Live audio without video, such as live radio or a live podcast, also has a real-time text version.
How to get it right
Show a live text stream from real-time captioning next to the live audio.
Who benefits most?
- Deaf people
Official wording
This page explains the rule in simple words. Only the original W3C text is normative.
- “Understanding Audio-only (Live)” at W3C (external site)
- Techniques in the WCAG Quick Reference (external site)