Minimal macOS Swift app to show webcam video in a custom NSView

ViewController.swift

import Cocoa
import AVFoundation

// inspiration: https://www.youtube.com/watch?v=1_PUdhLQsZQ

class ViewController: NSViewController {
  @IBOutlet weak var videoView: NSView!
  
  private var cameraSession = AVCaptureSession()
  private var camera: AVCaptureDevice!
  
  func videoDevices() -> [AVCaptureDevice]{
    let discoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInWideAngleCamera, .externalUnknown], mediaType: .video, position: .unspecified)
  
    return discoverySession.devices
  }

  override func viewDidLoad() {
    super.viewDidLoad()
    print("view did load")
    
    let devices = videoDevices()
    let cameraName = "FaceTime HD Camera"
    for device in devices{
      // print(device.localizedName)
      if(device.localizedName == cameraName) {
        camera = device
      }
    }
    
    do{
      try cameraSession.addInput(AVCaptureDeviceInput(device: camera))
    } catch let error{
      print("uh-oh spaghet")
      print(error.localizedDescription)
    }
    
    let preview = AVCaptureVideoPreviewLayer(session: cameraSession)
    preview.videoGravity = .resizeAspectFill
    videoView.layer = preview
    
    cameraSession.sessionPreset = .high
    cameraSession.startRunning()
  }
}