text: #include <iostream>
  #include <opencv2/opencv.hpp>
  //#include <opencv2/core.hpp>
  //#include <opencv2/videoio.hpp>
  //#include <opencv2/highgui.hpp>
  #include <unistd.h>
  // compile : g++ big_eyes.cpp -I/usr/include -L/usr/lib/ -lopencv_core -lopencv_cvv -lopencv_highgui -lopencv_videoio -lopencv_imgcodecs -o lol
  
  using namespace std;
  using namespace cv;
  
  int main()
  {
      Mat frame;
      VideoCapture cap;
      cap.open(0);
  
      int deviceID = 0;
      int apiID = cv::CAP_ANY;
  
      cap.open(deviceID + apiID);
  
      if (!cap.isOpened())
      {
          cerr << "[+] Error Camera not opened !" << endl;
          return -1;
      }
      cout << "Start Grabbing" << endl;
      for (;;)
      {
          cap.read(frame);
  
          if (frame.empty())
          {
              cerr << "[!] Frame is empty " << endl;
              break;
          }
  
          sleep(3);
          imwrite("frame.jpg",frame);
          break;
      }
      return 0;
  }
  