Note that you have to add rule for copying *.dll in setup.py too so that the files are actually copied inside wheels:

https://github.com/skvark/opencv-python/blob/master/setup.py#L33

Thanks for the pointer.

File roller keeps crashing on my Fedora, so I am unable to inspect wheel contents.

Need some sanity test for AppVeyor to ensure that it works (no Windows systems right now there).

Also need to stuff ffmpeg license somewhere..

You can add the license to this file in same manner as the BSD license has been added (with a note that cv2 folder contains the FFmpeg dll): https://github.com/skvark/opencv-python/blob/master/LICENSE-3RD-PARTY.txt

And it could be useful add a unit test for video reading. If there's e.g. some short mp4 public domain clip it could be added to the test folder and then run simple unit test:

import cv2

cap = cv2.videoCapture("filename.mp4")
self.assertTrue(cap.isOpened())

Wheels contain now both dlls, wildcard pattern needs to be modifed.

I used Chromium test files when I discovered these issues - https://chromium.googlesource.com/chromium/src/+/master/media/test/data/

Seems like I am out of time to finish this, so feel free to put the final touches here.

I did some testing, the video files open fine if the cv2 folder is in Windows PATH. I'll try to solve this...

@skvark thanks! I am still unable to get more time for OpenCV.

Now people will have less trouble trying to follow https://www.youtube.com/watch?v=MC00XWdl-ms =)