import sys

import os

import cv2

def main(videofile):

  print "Playing %s", videofile

  assert os.path.exists(videofile)

  capture = cv2.VideoCapture(videofile)

  (status, frame) = capture.read()

  while frame is not None:

    cv2.imshow("Frame", frame)

    key = cv2.waitKey()

    if key == 27:

      break

    (status, frame) = capture.read()

if __name__ == "__main__":

  main(sys.argv[1])