缩放使用AVPlayer播放视频

Question

我正在使用AVPlayer支付m3u8视频网址 是否可以在播放视频时缩放视频。

 let url = URL(string: "http://qthttp.apple.com.edgesuite.net/1010qwoeiuryfg/sl.m3u8")
let player = AVPlayer(url: url)

let playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = self.view.bounds
playerLayer.backgroundColor = UIColor.purple.cgColor
self.view.layer.addSublayer(playerLayer)