I want to know, how can I make my pen drive video file, copy protected, so that when I transfer to my friends for watching videos it does not get copied easily? And further also want to know some other security tools, which I can provide.
The only thing you can apply to pendrive is access protection using various application. That means encrypting the whole drive and when you insert it in a computer to ask for a password. This way you'll protect all the files, but it's not possible to protect only one file.
You can use the apps listed through the following Search Results in order to download apps of this kind: http://software.informer.com/search/pendrive+protection