[python] frame show form video file

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#! /usr/bin/python
import cv2
vc = cv2.VideoCapture('video.mp4')
c=1
fps = 24
if vc.isOpened():
    rval , frame = vc.read()
else:
    rval = False
while rval:
    rval, frame = vc.read()
    cv2.imshow("Result",frame)
    cv2.waitKey(1000 / fps);
vc.release()

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