OpenCV Assertion Failed error: (-215) scn == 3 || scn == 4 in function cv::cvtColor works ALTERNATE times

[GaneshVShinde]

I am a beginner in Python and OpenCV. when i run this code on windows 7 machine it worked fine but when i run this code on windows 10 I got assertion
what might be issue ?
is this driver issue?

assertion is
OpenCV Assertion Failed error: (-215) scn == 3 || scn == 4 in function cv::cvtColor

assertion is because of self.cam.read() returning false i m not able to understand why camera is not able to read is it driver issue?
if it is driver issue than how skype and other application who use camera works fine?

[georgiazhang]

Hi,did you solve the issue?I got the same error as yours.

[anilshanbhag]

It is working fine on Mac. I will try it later on windows to see if the error persists.

[saurabhsbora]

I also faced the OpenCV assertion error on Windows 10. I have checked my webcam is working fine and i have run other cv codes.