What this means
Important information shown in a video should be understandable without seeing the screen. The narration may already explain it. If it does not, a described version may be needed.
Passing examples
- During a demonstration, the speaker names the parts and explains every important action.
- The main result of an on-screen chart is explained aloud.
- A described version explains important silent actions between the dialogue.
- A silent instructional video has a complete text or audio alternative explaining the information shown.
Failing examples
- The speaker says 'put this here' while silently pointing.
- Important instructions appear only as words on screen and are never spoken.
- A silent action changes the meaning of the scene, but no description explains it.
Captions represent sound; descriptions explain visuals. A transcript alone does not replace audio description where the project's accessibility requirements call for it.