Webcam not working on Macbook Pro 13" At some point this year I noticed that my camera was not working. (Skype, Google, Facetime) 

I tried this https://support.apple.com/en-us/HT2090

But under devices for Camera it says no devices found. 

Mac OS 10.10.4
It might be some VDCAssistant programs using it.

Try this ,Open a terminal window and type the command below.

sudo killall VDCAssistant


This will kill all other programs and you will be able to use your camera again.