No the camera does not stop the preditor, but what it does is let you know exactly what is getting your chickens, how it is getting on, and where your weak spots are in your setup.I don't see how a camera will stop predators. It's always suggested but doesn't do anything.
So many posts in this section are from folks who dont know what is happening to their chickens, and many times it's just a guessing game because there are so many possibilities.
If you beef up your setup against raccoons and it turns out it's actually a weasel killing your flick, more security will be needed.