VideoWriter outputs corrupted video file

Question

This is my code to save web_cam streaming. It is working but the problem with output video file.

import numpy as np
im         


        

Answer 1

I added codec parameter to function cv2.videowriter.

import numpy as np
import cv2

cap = cv2.VideoCapture(0)
# Define the codec and create VideoWriter object
#fourcc = cv2.cv.CV_FOURCC(*'DIVX')
        #out = cv2.VideoWriter('output.avi',fourcc, 20.0, (640,480))
fps = cap.get(cv2.CAP_PROP_FPS)
width = cap.get(cv2.CAP_PROP_FRAME_WIDTH)   # float
height = cap.get(cv2.CAP_PROP_FRAME_HEIGHT)
codec = cv2.VideoWriter_fourcc('M', 'J', 'P', 'G')
out = cv2.VideoWriter('output.avi',codec,fps, (int(width),\
                                                    int (height)))

#out = cv2.VideoWriter('output.avi', -1, 20.0, (640,480))

while(cap.isOpened()):
    ret, frame = cap.read()
            if ret==True:
                frame = cv2.flip(frame,0)

                # write the flipped frame
                    out.write(frame)

                    cv2.imshow('frame',frame)
            if cv2.waitKey(1) & 0xFF == ord('q') :
            break
            else:
            break

            # Release everything if job is finished
            cap.release()
            out.release()
            cv2.destroyAllWindows()

I hope you may see what is different in my code and your code. Mine works now. Using MJPG codec for .avi extention the indention is a bit messed,please do forgive cause I am very first time user. The video file is no longer corrupt. I got the info from: Link