Success criterion 1.2.9 · Level AAA

Audio-only (Live)

Success criterion 1.2.9 · Level AAA

An alternative for time-based media is provided for all live audio content in synchronized media.

Principle 1: Perceivable · Guideline 1.2: Time-based Media

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.

“Your live captions are like having a front-row seat at every event. I'm not missing a beat, thanks to you!”