My iPad unable to view subtitles
Try this:


Launch the Settings app on your iPhone or iPad.
Tap on General.
Tap on Accessibility.
Under the Hearing section, tap on Subtitles &amp; Captioning.
Turn On the option for Closed Captions + SDH.
Tap on Style in order to customize how closed captions work if you'd like.


Also, what app/website are you viewing this in?

Source(s):


Google (googled "subtitles on iPad")
http://www.imore.com/how-enable-subtitles-and-captioning-auditory-accessibility-iphone-or-ipad