Use audio descriptions on Apple TV
Audio descriptions provide an audible narration of important onscreen action and content in movies and TV shows. If you have a video that includes audio descriptions, Apple TV can play them for you.
Turn on audio descriptions
In Settings on Apple TV, go to General > Accessibility > Audio Descriptions (or use the accessibility shortcut).
Turn audio descriptions on or off during video playback
When VoiceOver is turned on, press the Touch surface on the Siri Remote three times.
Note: When VoiceOver is turned off, this action instead turns closed captions on or off. See Use VoiceOver on Apple TV.