[GatorGirl]

Movies are not abstract, they are concrete. The same as books. The ideas might be abstract, ephemeral, whatever, but the product--book, movie, screenplay, painting, whatever, is concrete.

That is where intellectual property rights come from. You could think, word for word, the content of a book, but you don't own the copyright unless you write those words down.

[durasell]

The copyright doesn't relate to the concrete or actual strip of film, it relates to the concept. It protects an abstract piece of property. When you buy a DVD, you don't own the concept, you only own the piece of plastic.