Perspective transform on video

VideoPerspectiveTransform.py

import cv2
import numpy as np
 
cap = cv2.VideoCapture("test.MP4")
out = cv2.VideoWriter('out.mp4', 0x7634706d, 20.0, (960,540))

if (cap.isOpened()==False):
    print("Error reading video")
 
while (cap.isOpened()):
    ret, frame = cap.read()
 
    if ret == True:

        pts1 = np.float32([[469, 517], [1317, 517], [1, 676], [1701, 676]])
        pts2 = np.float32([[0, 0], [960, 0], [0, 540], [960, 540]])
        matrix = cv2.getPerspectiveTransform(pts1, pts2)
 
        result = cv2.warpPerspective(frame, matrix, (960, 540))
        #cv2.imshow("Frame", frame)
        cv2.imshow("Perspective transformation", result)
        out.write(result)
 
        if cv2.waitKey(25) & 0xFF == ord('q'):
            break
 
cap.release()
out.release()
cv2.destroyAllWindows()