Question

How to show subtitle above video with an overlay view on iOS?

Answer 1

You can create an overlay view using UILabel to show subtitle as below

//Overlay View
UILabel *lblOverlayView = [[UILabel alloc] init];
lblOverlayView.frame = CGRectMake(0, 459, 320, 21);
lblOverlayView.backgroundColor = [UIColor yellowColor];
lblOverlayView.alpha = 0.3f;
lblOverlayView.text = @"Video Subtitle";

then you can add it as a subview to the view of MPMoviePlayerController to show a subtitle while playing the video.

[_mpMoviePlayerController.view addSubview:lblOverlayView];

here, _mpMoviePlayerController is an object of MPMoviePlayerController.
Hope this will help you to fulfill the requirements.