[Fixed] MacBook Pro built-in webcam not working ?

So many times its happens with my mac that Skype, Chrome other applications are not able to access built in webcam. After googling i came up with following solution.

Usually it’s not a macbook problem. It’s software problem.

open a terminal and type

sudo killall VDCAssistant

This will trigger a restart of the camera’s software. Fixes the problem 99%. Skype and other software that uses the camera might also need reopening.