- UPDATE: My answer is about the Berne Convention, however the Berne Convention basically only applies outside the country of origin (Art. 5.3). The country of origin is the state where a work is first published (Art. 5.4). As you are from Lebanon, my answer would only apply outside Lebanon if you first publish it in Lebanon. However if you first publish it in another country which signed the Berne Convention, my answer would also apply to Lebanon, but possibly not to that other country.
If you mix your videos into one combined work, the result is copyrighted. But there is not reason to do so, because each separate video is also copyrighted. You don't need to register your works, neither do you need to pay a fee.
The wikipedia article about the Berne Convention explains:
The Berne Convention for the Protection of Literary and Artistic Works, usually known as the Berne Convention, is an international agreement governing copyright, which was first accepted in Berne, Switzerland, in 1886.
The Berne Convention formally mandated several aspects of modern copyright law; it introduced the concept that a copyright exists the moment a work is "fixed", rather than requiring registration. It also enforces a requirement that countries recognize copyrights held by the citizens of all other parties to the convention.
Lebanon joined the Berne Convention on September 30, 1947.
So the Berne Convention also applies to you. That means you have automatically copyright at the moment you create a video. You don't need to do anything to get the copyright.