Use subtitles and closed captions on Mac
You can customize the look of subtitles and closed captions, and choose to automatically show subtitles for the deaf and hard of hearing (SDH) or closed captions whenever they’re available.
Tip: If your Mac supports it, you can turn on live captioning so you can more easily follow spoken audio from your computer and from conversations around you. See Use Live Captions.
Automatically show closed captions and SDH when available
On your Mac, choose Apple menu > System Settings, then click Accessibility in the sidebar. (You may need to scroll down.)
Go to Hearing, then click Captions.
Do any of the following:
Always show closed captions and SDH when available: Turn on “Prefer closed captions and SDH.”
Stop showing closed captions and SDH: Turn off “Prefer closed captions and SDH.”
Customize the appearance of subtitles and captions
On your Mac, choose Apple menu > System Settings, then click Accessibility in the sidebar. (You may need to scroll down.)
Go to Hearing, then click Captions.
Do any of the following:
Create a style: Click , enter a name for the style, then change settings for the background and text. If you like many of the settings of an existing style, select it before you click , then change just the settings you don’t like.
To have your style used instead of the default style of the video you’re viewing, deselect the “Allow video to override” checkbox.
In the bottom section, you can also set a font to use to override another font every time it’s used in subtitles. For example, you might set a font to use instead of Cursive in subtitles.
Edit a style you created: Select the style in the list, then click Edit.
Delete a style you created: Select the style in the list, then click .