How to capture, write and display a video in opencv. 

import cv2
import numpy as np

capture = cv2.VideoCapture(0)
frame_width = int(capture.get(3))
frame_height = int(capture.get(4))

out = cv2.VideoWriter('output_1.avi',


                      


cv2.VideoWriter_fourcc('M', 'J', 'P', 'G'), 15,






                (frame_width, frame_height))


while True:
    ret, frame = capture.read()
    out.write(frame)
    cv2.imshow('window', frame)
    if cv2.waitKey(1) == 27:
        break
capture.release()
cv2.destroyAllWindows()

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