error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support

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error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support

  1. How to solve error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support

    I had the exact same error using yolov5, on windows 10. Rebuilding the library by typing
    pip uninstall opencv-python
    then
    pip install opencv-python
    worked for me.

  2. error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support

    I had the exact same error using yolov5, on windows 10. Rebuilding the library by typing
    pip uninstall opencv-python
    then
    pip install opencv-python
    worked for me.

Solution 1

I had the exact same error using yolov5, on windows 10. Rebuilding the library by typing

pip uninstall opencv-python 

then

pip install opencv-python

worked for me.

Original Author greg245 Of This Content

Solution 2

Few frustration hours later, saw this solution under the comment of the first answer by Karthik Thilakan

pip uninstall opencv-python-headless -y 

pip install opencv-python --upgrade

This worked for me in the conda environment. Thanks Karthik! 🙂

Original Author Sachin Mohan Of This Content

Solution 3

I installed another GPU and finally upgraded to Tensorflow 2 this week and suddenly, the same issue arose. I finally found my mistake and why uninstalling and reinstalling opencv works for some people. The issue is stated clearly in a text file in your opencv-python dist-packages named METADATA.

It states;

There are four different packages (see options 1, 2, 3 and 4 below) and you should SELECT ONLY ONE OF THEM. Do not install multiple different packages in the same environment.

Further, the file says that;

You should always use these packages if you do not use cv2.imshow et al. or you are using some other package (such as PyQt) than OpenCV to create your GUI.

referring to

Packages for server (headless) environments … (with) no GUI library dependencies

So, if you run;

pip list | grep opencv

and the result is more than one opencv version, you’ve likely found your problem. While an uninstall & reinstall of opencv might solve your problem, a more masterful solution is to simply uninstall the headless version as that is the one that does not care about GUIs, as it should be used in server environments.

Original Author jsfa11 Of This Content

Solution 4

This error is mostly with Pycharm Ide , I resolved it by changing the project interpreter None of the given solution in the internet worked for me.

Original Author arpit dixit Of This Content

Conclusion

So This is all About This Tutorial. Hope This Tutorial Helped You. Thank You.

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I am an Information Technology Engineer. I have Completed my MCA And I have 4 Year Plus Experience, I am a web developer with knowledge of multiple back-end platforms Like PHP, Node.js, Python and frontend JavaScript frameworks Like Angular, React, and Vue.

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