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output.avi file created but its size is 0k

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import numpy import cv2 cap = cv2.VideoCapture(0) fourcc = cv2.cv.CV_FOURCC(*'MJPG') out = cv2.VideoWriter('output.avi',fourcc, 20.0, (640,480)) while(cap.isOpened()): ret, frame = cap.read() if ret==True: frame = cv2.flip(frame,1) # write the flipped frame out.write(frame) cv2.imshow('frame',frame) if cv2.waitKey(1) & 0xFF == ord('q'): break else: break cap.release() out.release() cv2.destroyAllWindows() ![image description](/upfiles/14720499862910674.png)

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