I've install opencv-python but it still have this problem.
python version:3.7.7
opencv-python version:4.4.0.46
opencv-contrib-python version:4.4.0.46
and here's my code
import cv2 as cv
def GetPicture():
cv.namedWindow('camera', 1)
cap = cv.VideoCapture(0)
ret, frame = cap.read()
cv.imwrite('C:/person.jpg', frame)
cap.release()
I've tried different version of opencv, this problem can't be solved.