To stop online piracy on an individual level, there are a few things you can do. First, it is important to make sure your movies or videos are protected by copyright. Second, if you work with larger movie corporations, they can offer some protection by making files inaccessible if they are not acquired legally.
I am not aware of any other technical adjustments you can make to your files to protect them from pirates. If your movie is online, it can be pirated. There are low tech options, such as filming a movie in a theater, they are almost impossible to stop completely. There are also laws being put forth to prevent online piracy .