How to debug failures with cv2.VideoCapture(<video_file>)

1

I am trying to call:

cap = cv2.VideoCapture(video.mp4)

on a local video file and the result of

cap.isOpened() is False

My question is if it’s possible to get a more detailed error message of what went wrong? Probably it is something to do with my setup, maybe some missing drivers, but it’s hard to tell just from this message.

I have tried this on my local machine cv2 setup and it works for the same video, but I think on my remote server there must be something different with the setup and I’m trying to figure out what it is.

Thanks in advance for any help!

2

Figure it out, I need to run my program with

OPENCV_VIDEOIO_DEBUG=1

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