Success criterion 1.2.9
Audio-only (Live)
An alternative for time-based media is provided for all live audio content in synchronized media.
- Level AAA
- Principle 1: Perceivable
- Guideline 1.2: Time-based Media
In a user’s words
“I can see the excitement, but I can't understand why everyone is laughing.”
What each role can do
- Product manager
- Provide a real-time text alternative, such as live captioning, for every live audio-only broadcast.
- Designer
- Place the live transcript next to the audio player, with controls to pause scrolling and resize the text.
- Developer
- Stream the live text into an updating region that works with braille displays and screen magnifiers.
- Tester
- Test the live transcript during a real broadcast for accuracy, delay and readability.
Once it is fixed
“Your live captions are like having a front-row seat at every event. I'm not missing a beat, thanks to you!”
Share this with your team
The quotes are written to illustrate the criterion. They are not testimonials from real people. For the official wording, find 1.2.9 in the W3C quick reference for WCAG 2.2 (opens in a new tab).
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