: Users can modify the appearance of subtitles (font, size, color, background) via the Apple Support Guide for accessibility settings. How to Access and Change Subtitles
: You can set default subtitle preferences by going to Settings > Accessibility > Subtitles and Captioning on your Apple TV device. Use subtitles and captioning in the Apple TV app Morning Show(2019)900 Available subtitles
: Chinese (Simplified & Traditional), Japanese, Korean, Hindi, Tamil, Telugu, Indonesian, Thai, and Vietnamese. : Users can modify the appearance of subtitles