text: #import <UIKit/UIKit.h>
  #import <AVFoundation/AVFoundation.h>
  
  @interface MyVideoCapture : UIViewController <AVCaptureVideoDataOutputSampleBufferDelegate>
  
  @property (nonatomic, strong) AVCaptureSession *session;
  
  @property (nonatomic, strong) UIView *layerView;
  
  @property (nonatomic, strong) UIImageView *imageView;
  
  @end
  