Question 250541 in IOS Swift Question posted in
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Ios swift – AVPlayerViewController simply won't play in the fullscreen mode, once you tap the expand icon, what setting could cause this?

I have a simple AVPlayerViewController which sits in a box on the screen in the usual way, it plays / does everything perfectly.

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If you tap the expander,

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the phone perfectly brings up the usual normal fullscreen player,

enter image description here

However it simply does not play – it just remains black.

In detail,

  • on the main screen, the "small" video player in the app seems to pause
  • you now hear NO AUDIO at all from the phone
  • on the full-screen player, it seems to set the scrub bar position, correctly, the same position as on the "small" player in the app
  • the full-screen player seems to be currently on play not pause mode FWIW
  • the full-screen player simply plays nothing at all. it makes no difference if you tape pause/play/pause etc on the full-screen player
  • when you do dismiss the full-screen player, everything works as it should (the "small" player in the app continues happily playing, with audio etc as normal)

I DO have this set,

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I tried both current Xcode and also would back to 14.3.

I tried numerous physical phones, iOS versions, etc.

The AVPlayerViewController is in fact in the view controller stack, ie "addChild" is set for it.

I did not subclass AVPlayerViewController.

I tried the many settings such as entersFullScreenWhenPlaybackBegins ,
canStartPictureInPictureAutomaticallyFromInline, they’re not relevant.

What the heck could the issue be?

Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    Possible solution - Apple issue

    It seems there might be a bug or unusual behavior in recent (2023) AVKit.

    In short - it seems that

    • AVPlayer works perfectly, when AVPlayerViewController goes to full screen.

    BUT

    • AVQueuePlayer simply does not work when AVPlayerViewController goes to full screen.

    (Unfortunately of course, one almost always uses AVQueuePlayer since AVPlayer as such is a bit useless! I only discovered the issue because I very fortunately happen to use AVPlayer while experimenting on the issue.)

    Demo ...

    • It is very easy to demo. Just change between AVPlayer and AVQueuePlayer and you'll see it fails spectacularly when you use AVQueuePlayer

  2. 0

    I faced the same issue when I was playing with video content on iPhone and iPad screens in one of my projects. So what I did was to initialize the gravity of video according to screen size of device just like below.

    var videoGravity: AVLayerVideoGravity = .resizeAspectFill

    By setting this, could help the video frame to adjust itself to screen size.

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