More information about copyright notices
Copyright is one of the major intellectual property rights. Copyright protects certain classes of work, including literary works (e.g. written text and software), artistic works (e.g. drawings, photographs and graphics) and musical works. Although websites are not protected as websites, some of the constituent elements of a website will almost always attract copyright protection.
A copyright notice is sometimes called a “copyright statement”. This document may be incorporated into more general terms and conditions, or may be used as a stand-alone notice. This copyright statement includes the following sections: (1) ownership of copyright; (2) this copyright notice; (3) copyright licence; (4) data mining; (5) permissions; (6) enforcement of copyright; and (7) infringing material.
For more background information about copyright, see: 10 things you should know about … copyright.
Other types of copyright-related legal document
If you want to license copyright to a specific person or company, rather than to the world at large, you will need some form of copyright licence document.
Just a disclaimer, the music in this video is copyright free, therefore I can not be struck for copyright!