You need to change the QuickTime player settings in order to view closed captions or subtitles. Navigate to Edit > Preference > Play Preferences and check the boxes Show closed captioning when available and Show subtitles when available.

You need to change the QuickTime player settings in order to view closed captions or subtitles. Navigate to Edit > Preference > Play Preferences and check the boxes Show closed captioning when available and Show subtitles when available.
