我使用AVFoundation录制了一段视频,点击后它会在一个新的视图控制器中开始播放。问题是,我无法给正在播放的视频添加滤镜效果。以下是我所实现的代码。
import UIKit
import AVFoundation
class VideoPlayback: UIViewController {
let avPlayer = AVPlayer()
var avPlayerLayer: AVPlayerLayer!
var videoURL: URL!
@IBOutlet weak var videoView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(finishVideo), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: nil)
avPlayerLayer = AVPlayerLayer(player: avPlayer)
avPlayerLayer.frame = view.bounds
avPlayerLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill
videoView.layer.insertSublayer(avPlayerLayer, at: 0)
view.layoutIfNeeded()
let playerItem = AVPlayerItem(url: videoURL as URL)
avPlayer.replaceCurrentItem(with: playerItem)
avPlayer.play()
}
@objc func finishVideo()
{
print("Video Finished")
self.performSegue(withIdentifier: "unwindToFifteenSeconds", sender: self)
}
// Remove Observer
deinit {
NotificationCenter.default.removeObserver(self)
}
}
上面的代码只是用AVfoundation播放由相机捕获的视频。我只需要在这个播放的视频上添加CIfilters。