Background Subtraction from video using OpenCV and Python

bg_subtractor.py

import numpy as np
import cv2

file_path = "vid.mp4"

cap = cv2.VideoCapture(file_path)
first_iter = True
result = None
while True:
    ret, frame = cap.read()
    if frame is None:
        break

    if first_iter:
        avg = np.float32(frame)
        first_iter = False

    cv2.accumulateWeighted(frame, avg, 0.005)
    result = cv2.convertScaleAbs(avg)

cv2.imshow("result", result)
cv2.imwrite("averaged_frame.jpg", result)
cv2.waitKey(0)

# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()