I've never seen anything called Video Compiler and I've been using AE for over a decade. Perhaps it's called something different in English.
What does it do?
Agree with Szalam. We can't help you because we absolutely do not understand what you are referring to. On a hunch perhaps you are referring to the Video CoPilot plug-ins? If that's the case, then the answer for you is that you have to buy them. They are not free nor included in a standard AE install.