Audio and video
audio-caption
WCAG 1.2.1 Audio-only and Video-only (Prerecorded) Level A
Who this affects
The audio has no transcript or captions.
How to fix it
Provide a text transcript alongside the audio.
How much work is it?
Usually a developer work. That is a rough guide for planning, not an estimate for your codebase. A single content edit repeated across a template is a template change.
What a person still has to check
Passing this rule does not mean 1.2.1 passes. Automation checks part of the criterion, and the rest is a judgement:
Watch or listen to each recording and confirm a text alternative exists and matches.
Read 1.2.1 Audio-only and Video-only (Prerecorded) in plain language
Where this check comes from
This is an axe-core rule. We run axe in a real browser on every page we scan. Deque’s reference for audio-caption
Find out whether your site does this
A scan checks this rule on every page it visits, and shows you the code and a screenshot of each place it fires.