pictureInPictureController
open override fun pictureInPictureController(pictureInPictureController: AVPictureInPictureController, setPlaying: Boolean)
open override fun pictureInPictureController(pictureInPictureController: AVPictureInPictureController, didTransitionToRenderSize: CValue<CMVideoDimensions>)
open override fun pictureInPictureController(pictureInPictureController: AVPictureInPictureController, skipByInterval: CValue<CMTime>, completionHandler: () -> Unit)
open override fun pictureInPictureController(pictureInPictureController: AVPictureInPictureController, failedToStartPictureInPictureWithError: NSError)