Continue to show video from camera when app is in background for iOS 16

Question

I have been working on a video calling application, for my usecase, I would like to show the video of a person in the call even though he has backgrounded my application.

In apple doc, it is specified that it can be achieved from iOS 16 using isMultitaskingCameraAccessEnabled by checking isMultitaskingCameraAccessSupported in AVCaptureSession object

Here is my code that I used but im unable to show video and in info.plist manifest screen, multiple window is enabled.

How do I show it like how zoom and whatsapp does.

class AVCaptureSessionHelper {
  
  let captureSession = AVCaptureSession()
  
  func startCapturingSession() {
    captureSession.beginConfiguration()
    if #available(iOS 16.0, *) {
      if captureSession.isMultitaskingCameraAccessSupported {
        captureSession.isMultitaskingCameraAccessEnabled = true
      }
    }
    captureSession.commitConfiguration()
    DispatchQueue.global(qos: .background).async {
      self.captureSession.startRunning()
    }
  }
  
  func stopCapturing() {
    DispatchQueue.global(qos: .background).async {
      self.captureSession.stopRunning()
    }
  }
}

But its not working. can someone help with this?