title: How to reduce number of classes in YOLOv3 files?
body: <p>I am using YOLOv3 to detect cars in videos. I downloaded three files used in my code <code>coco.names</code>, <code>yolov3.cfg</code> and <code>yolov3.weights</code> which are trained for 80 different classes of objects to be detected. The code worked but very slowly, it takes more than 5 seconds for each frame. I believe that if I reduced the number of classes, it would run much faster. I can delete the unnecessary classes from <code>coco.names</code>, but unfortunately, I don't understand all the contents from <code>yolov3.cfg</code>, and I can't even read <code>yolov3.weights</code>.
  I was thinking about training my own model, but I faced a lot of problems, so I gave up the idea.
  Can anyone help me in modifying these files?</p>