Sur Subtitles English — Big

: Check the box for "Prefer closed captions and SDH" to automatically show English subtitles whenever they are available.

: You can also toggle "Show automatically when languages do not match" to have subtitles appear only when the video audio differs from your system language. Visual Customization

To enable or customize subtitles, use the Apple Menu Captions Settings : Big Sur subtitles English

: Choose from Default , Classic , Large Text , or Outline Text .

: Click the Apple logo in the top-left corner and select System Preferences . Accessibility : Choose the Accessibility icon from the menu. Captions : Select Captions from the sidebar on the left. : Check the box for "Prefer closed captions

: Click the "+" (plus) button to create a custom look, where you can adjust the font, size, color, and background opacity. Feature Highlight: Live Captions

The operating system (macOS 11) allows you to customize and manage English subtitles and closed captions through its accessibility settings. You can set global preferences that apply to system apps like TV and Safari, ensuring that dialogue is always accessible. Managing Subtitles in macOS Big Sur : Click the Apple logo in the top-left

You can change how subtitles appear to make them easier to read. According to AbilityNet , you can choose from several preset styles or create your own: