The designated initializer for a Picture in Picture controller.
- iOS 9.0+
- macOS 10.15+Beta
The player layer containing the media content for the Picture in Picture controller.
A new Picture in Picture controller, initialized with the specified player layer.
If Picture in Picture is not supported on the current device, this method returns
To ensure that PiP continues to work, do not release the returned object, whether your app is running in the foreground or background.