Release VideoWriter in Python OpenCV

Question

Does anybody know what the command to release a VideoWriter object in python is?

In my code I import the following:

import cv2
import cv2.cv as cv

The documentation I can find does not say how to release the videoObject using cv2 or python at all. That is the documentation for OpenCV 2.4.5.0.

I've tried

cv.ReleaseVideoWriter(videoWriter)

and other random combinations using cv2 and cv. Nothing seems to work.

Thanks!

May be it is released automatically when you exit the program. — Abid Rahman K
– Abid Rahman K, Commented Jun 13, 2013 at 5:08

Abid Rahman K · Accepted Answer · 2013-06-14 05:17:19Z

5

I compiled OpenCV 2.4.5 from its source in Fedora, and it does have a release function. Please see my IPython session which demonstrates this feature.

In [22]: out = cv2.VideoWriter('out.avi', cv2.cv.CV_FOURCC(*'MJPG'), 30.0, (100, 100), False)

In [23]: out.isOpened()
Out[23]: True

In [24]: out.    # Press `Tab`, Just checking available methods, see release is there
out.avi       out.isOpened  out.open      out.release   out.write     

In [24]: out.release()

In [25]: out.isOpened()
Out[25]: False

So please check your version.

answered Jun 14, 2013 at 5:17

Abid Rahman K

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2 Comments

Rafael_Espericueta Over a year ago

When I type "out." and then press the Tab key, out.release isn't an available method.

Abid Rahman K Over a year ago

which version do you use?

gustavo99 · Accepted Answer · 2015-02-22 01:06:09Z

3

This worked for me:

videoWriter = None

Source: "OpenCV Computer Vision with Python, by Joseph Howse", chapter 2.

answered Feb 22, 2015 at 1:06

gustavo99

312 bronze badges

1 Comment

Jose Luis Bru Quiles Over a year ago

This is works like a charm, must be the accepted answer.

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