I have to jump in here and say that if people are viewing video material over the web then they are downloading it to their hard disks. There's nothing you can do to stop them saving or taking a copy. Even a streaming server (a much misunderstood beast) won't help you with that.
You have no control over the client end so there's nothing you can do about it.
Another aside... I'm not a big fan of these automated installers. It may seem easier at the time but there are two big problems - 1. You have no idea what it is doing so you are trusting it to work, trusting it with your data, and trusting that it will upgrade in the future 2. we don't know either so you are unlikely to get much useful help when it all goes wrong.
I am aware that I'm sounding horribly negative but this is all bitter experience from these forums. What you wanted to do should have been, from your initial post, dead easy. But, a VPS assumes a bit more 'server administrator' skill and there's not really any way around that.