When there is audiovisual content (video) you can work out what is going on from the provided audio description
Design and Developer Notes
Video content may not be seen by people who are visually impaired so an alternative track is essential so that everyone can understand the visual information that is being conveyed. Sometimes it's necessary to create two versions; one with audio description, and one without.
Testing Notes
If video content is present on the page and contains visual information that is useful to the user, this information must also be conveyed through audio.
Steps to check
Check any video content and assess whether important visual content has an audio description.
Ensure the audio description matches the visual content.
Impact range: High
Test type: Manual
WCAG Reference: Understanding Success Criterion 1.2.5 Audio Description (Prerecorded)