add code

+from cv2 import cv2
+
+for i in range(len('box.mp4')):
+    cam = cv2.VideoCapture('box.mp4')
+    currentFrame = 0
+    while(True):
+        ret, frame = cam.read()
+        if ret:
+            cv2.imwrite(str(currentFrame) + '.jpg', frame)
+            currentFrame += 1
+        else:
+            break
+    cam.release()
+