fps code is not working about yolov7_openvino_cpp-python HOT 2 CLOSED

i tried to put fps code above cv2.destroy() so i can see in real time code in my CMD prompt

& fps is decreasing by 0.01 seconds, i don't know if its normal or not

throughput: 3.47 fps
throughput: 3.47 fps
throughput: 3.47 fps
throughput: 3.47 fps
throughput: 3.47 fps
throughput: 3.46 fps
throughput: 3.46 fps
throughput: 3.46 fps
throughput: 3.46 fps
throughput: 3.46 fps
Traceback (most recent call last):
  File "python/webcam.py", line 25, in <module>
    yolov7_detector.infer_cam(args.input)
  File "D:\openVINO\YOLOv7_OpenVINO_grid\python\yolov7.py", line 295, in infer_cam
    img = self.letterbox(frame, self.img_size)
  File "D:\openVINO\YOLOv7_OpenVINO_grid\python\yolov7.py", line 60, in letterbox
    shape = img.shape[:2]  # current shape [height, width]
AttributeError: 'NoneType' object has no attribute 'shape'

from yolov7_openvino_cpp-python.

once it finishes running, I'm getting this error

im loading video in it

  File "python/webcam.py", line 25, in <module>
    yolov7_detector.infer_cam(args.input)
  File "D:\openVINO\YOLOv7_OpenVINO_grid\python\yolov7.py", line 295, in infer_cam
    img = self.letterbox(frame, self.img_size)
  File "D:\openVINO\YOLOv7_OpenVINO_grid\python\yolov7.py", line 60, in letterbox
    shape = img.shape[:2]  # current shape [height, width]
AttributeError: 'NoneType' object has no attribute 'shape'

I think you should put some codes in it to find out whether it is the end of a video ?

from yolov7_openvino_cpp-python.