I am trying to take a picture from the defualt carmera with python, to do this I am using openCV (import cv2
from python shell). However, when I attempt to disable the camera it closes but with the error [ WARN:0] terminating async callback
.
This is code I am trying to run:
import cv2
camera_port = 0
camera = cv2.VideoCapture(camera_port)
return_value, image = camera.read()
cv2.imwrite("image.png", image)
camera.release() # Error is here
The code outputs the desired result- it takes a saves an image but I do not understand why the error message occures or how to remove it
I had the same warning.
Just modify the line camera = cv2.VideoCapture(camera_port)
to camera = cv2.VideoCapture(camera_port, cv2.CAP_DSHOW)
and add cv2.destroyAllWindows()
as the last line of your code.