The copyright registration process for cinematography is a long one, and it involves a lot of legal requirements. However, all of that can be compressed into the following points:
Perform a copyright registration search to see if the cinematography of the same name, content, and nature is already copyrighted
File the application for copyright registration along with a copy of the work you want to copyright.
Wait for the copyrighted material to be published. It shall stay in the journal for a while.
Once you get the copyright registration, the benefits come then. However, the time it takes for the process to be completed can take even years.