record_screen_opencv_python.py

import mss
import numpy
import cv2

out = cv2.VideoWriter("output.avi", cv2.VideoWriter_fourcc(*'MJPG'), 25.0,(600,400), True)

i = 0
while i < 1000:
    i+=1
    with mss.mss() as sct:
        monitor = {'top': 52, 'left': 65, 'width': 600, 'height': 400}
        img = numpy.array(sct.grab(monitor))
        print(img.shape)
        out.write(img[:,:,0:3].astype('uint8'))
        cv2.imshow('A',img)
        cv2.waitKey(3)
out.release()