// Create a VideoCapture object and use camera to capture the video

VideoCapture cap(0);

// Check if camera opened successfully

if(!cap.isOpened()){

cout << "Error opening video stream" << endl;

return -1;

}

// Default resolutions of the frame are obtained.The default resolutions are system dependent.

int frame_width = cap.get(CV_CAP_PROP_FRAME_WIDTH);

int frame_height = cap.get(CV_CAP_PROP_FRAME_HEIGHT);

// Define the codec and create VideoWriter object.The output is stored in 'outcpp.avi' file.

VideoWriter video("outcpp.avi",CV_FOURCC('M','J','P','G'),10, Size(frame_width,frame_height));

while(1){

Mat frame;

// Capture frame-by-frame

cap >> frame;

// If the frame is empty, break immediately

if (frame.empty())

break;

// Write the frame into the file 'outcpp.avi'

video.write(frame);

// Display the resulting frame

imshow( "Frame", frame );

// Press ESC on keyboard to exit

char c = (char)waitKey(1);

if( c == 27 )

break;

}

// When everything done, release the video capture and write object

cap.release();

video.release();

// Closes all the frames

destroyAllWindows();

return 0;