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cap = cv2.VideoCapture('chaplin.mp4')

# Check if camera opened successfully
if (cap.isOpened()== False): 
     print("Error opening video stream or file")

 # Read until video is completed
while(cap.isOpened()):
    # Capture frame-by-frame
    ret, frame = cap.read()
    if ret == True:

        # Display the resulting frame
        cv2.imshow('Frame',frame)

        # Press Q on keyboard to  exit
       if cv2.waitKey(25) & 0xFF == ord('q'):
           break

    # Break the loop
   else: 
       break

 # When everything done, release the video capture object
 cap.release()

 # Closes all the frames
cv2.destroyAllWindows()

cap = cv2.VideoCapture('chaplin.mp4')

# Check if camera opened successfully
if (cap.isOpened()== False): 
     print("Error opening video stream or file")

 # Read until video is completed
while(cap.isOpened()):
    # Capture frame-by-frame
    ret, frame = cap.read()
    if ret == True:

        # Display the resulting frame
        cv2.imshow('Frame',frame)

        # Press Q on keyboard to  exit
       if cv2.waitKey(25) & 0xFF == ord('q'):
           break

    # Break the loop
   else: 
       break

 # When everything done, release the video capture object
 cap.release()

 # Closes all the frames
cv2.destroyAllWindows()

cap = cv2.VideoCapture('vtest.avi')

# Check if camera opened successfully
if (cap.isOpened()== False): 
     print("Error opening video stream or file")

 # Read until video is completed
while(cap.isOpened()):
    # Capture frame-by-frame
    ret, frame = cap.read()
    if ret == True:

        # Display the resulting frame
        cv2.imshow('Frame',frame)

        # Press Q on keyboard to  exit
       if cv2.waitKey(25) & 0xFF == ord('q'):
           break

    # Break the loop
   else: 
       break

 # When everything done, release the video capture object
 cap.release()

 # Closes all the frames
cv2.destroyAllWindows()