Raspberry Pi and OpenCV. The cv2.error while capture the image through camera lens

Question

https://stackoverflow.com/questions/43572387/error-215-size-width0-size-height0-occurred-when-attempting-to-display-a

I have the similar issue with this discussion, after I read it still don't have clue for how to address mine,that I post my case here

joy@raspberrypi:~ $ hostnamectl Static hostname: raspberrypi Icon name: computer Machine ID: 4aa79d3da798421f9882083733d765d5 Boot ID: b42eea511b8d4ad5bfec964bfb792d1b Operating System: Raspbian GNU/Linux 11 (bullseye) Kernel: Linux 5.15.61-v8+ Architecture: arm64 

I use Raspberry Pi 4 ; 32 bit, linux Linux 5.15.61-v8+ run python3 ; logitech USB camera lens ; run in virtual environment

• the python script opencv_camera.py

import cv2 # define a video capture object vid = cv2.VideoCapture(1) ########## 1- device id =1###if 1 deosn't work try 2 while(True): ret, frame = vid.read() cv2.imshow('frame', frame) if cv2.waitKey(1) & 0xFF == ord('q'): break vid.release() cv2.destroyAllWindows() 

---

error occur:

cv2.error: OpenCV(4.6.0) .... in function 'imshow' 

• the output:

(venv) joy@raspberrypi:~/Desktop $ python opencv_camera.py [ WARN:[email protected]] global /tmp/pip-wheel-u79916uk/opencv-python_ea2489746b3a43bfb3f2b5331b7ab47a/opencv/modules/videoio/src/cap_v4l.cpp (902) open VIDEOIO(V4L2:/dev/video1): can't open camera by index Traceback (most recent call last): File "/home/joy/Desktop/opencv_camera.py", line 14, in <module> cv2.imshow('frame', frame) cv2.error: OpenCV(4.6.0) /tmp/pip-wheel-u79916uk/opencv-python_ea2489746b3a43bfb3f2b5331b7ab47a/opencv/modules/highgui/src/window.cpp:967: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'imshow'