blinker.py

import cv2
import numpy as np


cap = cv2.VideoCapture('./blinker.mp4') 
result = []

while(cap.isOpened()):
    ret, frame = cap.read()
    if ret == True:
        if (np.average(frame) > 50):
            result.append('1')
        else:
            result.append('0')
    else: 
        break
 
cap.release()
cv2.destroyAllWindows()

with open('result.txt', 'w') as f:
    f.write(''.join(result))