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How to check if camera is enabled?

asked 2020-11-27 18:07:56 -0500

NikosOpenCV gravatar image

updated 2020-11-27 21:24:52 -0500

crackwitz gravatar image

Hello. Is there any way to check if my camera is enabled (I don't mean available and I know that the light of computer is on when camera is on),but I'm writing a program with many files and functions and I want to check if camera is enabled -> do this ,if not -> do that ? So, I want to have a function to tell me if camera is enabled or not and use it to check other things in my program, but I want to know if can be happen.

Ubuntu 18 , Python 3 Thanks.

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what do you mean, "enabled"? OpenCV can't know if any video device in your system is currently being used. that's not OpenCV's purpose.

crackwitz gravatar imagecrackwitz ( 2020-11-27 21:23:44 -0500 )edit

Ok,I undestand.

NikosOpenCV gravatar imageNikosOpenCV ( 2020-11-28 01:59:41 -0500 )edit

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answered 2020-11-28 02:21:26 -0500

berak gravatar image

the only way to check is to try it out:

VideoCapture cap;
bool ok = cap.open(0);
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Asked: 2020-11-27 18:07:56 -0500

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Last updated: Nov 28 '20