UIImagePickerController录制的视频用UIImagePickerControllerCameraDeviceFront翻转

Question

    self.MovieInterface =   [[UIImagePickerController alloc] init];
    self.MovieInterface.delegate    =   self;
    self.MovieInterface.sourceType  =   UIImagePickerControllerSourceTypeCamera;
    self.MovieInterface.mediaTypes = [[NSArray alloc] initWithObjects:(NSString *) kUTTypeMovie, nil];
    self.MovieInterface.cameraDevice = UIImagePickerControllerCameraDeviceFront;
    self.MovieInterface.hidesBottomBarWhenPushed = YES;
    self.MovieInterface.videoMaximumDuration    =   30;
    self.MovieInterface.allowsEditing = YES;

    self.MovieInterface.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;

    [self.view addSubview:self.MovieInterface.view];

视频不断水平翻转。我试图用图像查找其他类似的问题，但我找不到任何关于视频录制的内容。任何人都解决了这个问题？