Assertion Failed on OPENCV cvtColor about camp HOT 4 OPEN

Nope, tried three different power sources for the PI, not the problem. Tested the camera on my PC, worked.

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The following snippet is printing ten times "cannot read image", so it is definitely a driver problem on my side:

import cv2
from PIL import Image
camera = cv2.VideoCapture(0)
for i in range (10):
    ret, img = camera.read()
    if ret:
        break
    else:
        print ("cannot read img");

Maybe we should add an if and read the first value on the tuple returned by camera.read() (line 7x on your code I think), printing an understandable error to the developer. What's your opinion?

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And for my problem, I'll try a clean install of raspbian and see what happens.

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Maybe we should add an if and read the first value on the tuple returned by camera.read() (line 7x on your code I think), printing an understandable error to the developer. What's your opinion?

I think that's a good idea. Send over a pull request and I'll accept it.

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