Principle 1 Perceivable · Guideline 1.2: Time-based Media
1.2.7 Extended Audio Description (Prerecorded)
If the dialogue gaps are too short, the video pauses for the description.
What this means in practice
Needed for visually dense videos without pauses – instructional content, for instance. More work technically, because a second version with pauses has to be produced.
Normative wording
The binding text lives at the W3C. What you read here is our own faithful rendering – not a quotation.