Hi all,

I am new to Qt and opencv, I am programming a graphical interface to record a video through webcam using opencv libraries in Qt. Problem is when I push the start recording button on my interface, a new window gets launched and I dont want that. It should be like after pressing the start recording button it should display the opencv output of webcam inside a Label or Widget on my graphical interface and not on a newly launched window.

I am using Qt 5.8 on windows 10. Below is the while loop which captures the frame and displays in a window:

Qt Code: 
  1. while (1)
  2.             {
  3.  
  4.                 Mat frame;
  5.  
  6.                 bool bSuccess = cap.read(frame); // read a new frame from video
  7.  
  8.                 if (!bSuccess) 
  9.                {
  10.                      cout << "ERROR: Cannot read a frame from video file" << endl;
  11.                      break;
  12.                 }
  13.  
  14.                  oVideoWriter.write(frame); 
  15.  
  16.  
  17.                 imshow("MyVideo", frame); //this line launches a new output window
  18.  
  19.  
  20.                if (waitKey(10) == 27) 
  21.                {
  22.  
  23.                     cout << "esc key is pressed by user" << endl;
  24.                     return ;
  25.  
  26.                 }
  27.             }
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Can anyone please guide me on the code of how can I embed the opencv output window inside a Label or Widget in my form.ui.

Thank you for your time and knowledge.