Closed captioning or subtitling is displaying text on the video screen to provide additional information to people who wish to access it. This is an essential accessibility feature for certain individuals, who are hearing impaired or hard of hearing.
How to Enable Closed Captioning on iOS Videos
Simply tap, Settings > Videos and toggle on Closed Captioning. Note that enabling closed captions only works if you have video that supports it. Also, when you enable closed captioning, it will also turn on closed captioning for other third party video apps (e.g. Netflix).
Turn On Closed Captioning in iTunes
You can also turn on closed captioning in iTunes on Mac and PC computers.
Launch iTunes > Preferences (from the “iTunes” menu for Mac or “Edit” menu for PC) then select the “Playback” tab and check the box for “Show closed captioning when available”
How to find videos that support closed captioning
Turning closed captioning on will only work if your video supports it. Nowadays, many videos support this feature. To find videos that support closed captioning see below:
Find movies that support closed captioning on PC and Mac
Launch iTunes then iTunes Store and select Power Search from the Quick Links menu bar. Then select Movies from the drop down menu and check the box next to “Search only for movies that contain closed captioning.”
Find movies and videos that support closed captioning on iOS devices
Launch the iTunes Store, and tap Movies or TV shows and type “closed caption” (no quotes) and your keyword (if you have) in the search field like this:
Search term: closed caption history: This will search contents that include the keyword history and support closed captioning.
Please note that movies that support closed captioning will show a CC (Close Caption) logo.