func pictureInPictureControllerWillStartPictureInPicture(_ pictureInPictureController: AVPictureInPictureController) { // note this is first window if let window = UIApplication.shared.windows.first { window.addSubview(customView) // use autoLayout customView.snp.makeConstraints { (make) -> Void in make.edges.equalToSuperview() } } }The shape of the pip window depends on the shape of video. So just change current video to a video with a different shape.
Sample code like:
NSURL *url = [[NSBundle mainBundle] URLForResource:videoName withExtension:@"MP4"]; AVAsset *asset = [AVAsset assetWithURL:url]; AVPlayerItem * item = [[AVPlayerItem alloc] initWithAsset:asset]; [self.pipController.playerLayer.player replaceCurrentItemWithPlayerItem:item];For more technical exchange you can scan to add my WeChat: