Gray_frame = cv2.cvtColor()

while True:
4 reg,frame = cap.read()
----> 5 gray_frame = cv2.cvtColor(frame,cv2.COLOR_RGB2HSV)
6 if ret == False:
7 continue
Showing this error on Google Colab can you suggest me… why this error

You’ll need to use web APIs to interact with the camera in Colab. (Colab codes executes on a VM that doesn’t have a webcam attached, so APIs that presume direct hardware access won’t work.)

The advanced output example notebook has an example showing how to access the camera using web APIs:
https://colab.research.google.com/notebooks/snippets/advanced_outputs.ipynb#scrollTo=2viqYx97hPMi

Or you can use a webcam by running python script locally.

I hope I’ve cleared your doubt. If you still have some questions or not find the answers satisfactory, you may reopen the doubt.