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我通过UIImagePickerController和iPhone 6s/6s Plus录制视频，它显示在16：9（通过裁剪模拟，我想象），但当视频返回并布置时，视频显示的左侧和右侧超出取景器部分的宽高比为4：3。调用UIImagePickerController在4：3而不是16：9（Xcode）（Swift）
我如何让UIImagePickerController在相机模式下以其真正的4：3模式显示，而不是默认的faux-16：9？
目前我正在调用它像这样：
// IB: Record Button Control
@IBAction func recordVideo(_ sender: UIButton) {
if (UIImagePickerController.isSourceTypeAvailable(.camera)) {
self.selectedButton = sender
self.imagePicker.sourceType = .camera
self.imagePicker.mediaTypes = [kUTTypeMovie as String]
self.imagePicker.allowsEditing = false
self.imagePicker.videoMaximumDuration = 30.0
self.imagePicker.delegate = self
self.present(self.imagePicker, animated: true, completion: {})
} else {
CreateAlert(controller: self, title: "No Camera", message: "Camera is not accessible")
}
}