Turn subtitles on or off
While you're watching a movie or TV show, you can turn subtitles on or off. On Apple TV 4K or Apple TV HD, swipe down on your remote, select Subtitles, then choose the language that you want to see subtitles in. To turn subtitles off, swipe down on your remote, select Subtitles, then select Off.
You can also ask Siri. Just hold down the Siri button on your Siri Remote, then say, “Turn on subtitles” or "Turn off subtitles."
To turn on and change the language of subtitles on Apple TV (3rd generation), hold down Select on your remote for three seconds to see the Subtitles tab. Then select the option that you want to use.
Change the language on your Apple TV
Follow the steps below to change the language on your Apple TV.
From the Home screen, select Settings.
General is the first choice at the top of the list.
Scroll down and select Language under Language and Region, which is the first option that displays a flag to the left. Scroll slowly, because it might take a moment for the flag to appear.
Choose the language that you want
Scroll down on the next screen and choose the language that you want.