CC also provides public domain tools:
I have just created this clip of a stick person doing a jig. I automatically own the copyright to this work (which applies until 70 years after I die). But say I want to offer it to the world so that others may freely build upon, enhance, and reuse it for any purpose without restriction under copyright law.
CC0 is a universal tool. I apply CC0 to this work which waves copyright and related rights worldwide. Now, this guy is free from all these restrictions to the greatest extent possible! This means that others can copy, modify, distribute, and perform the work (even from commercial purposes) without asking permission.
To apply for the license, all I have to do is go here or here.
Then fill out some basic information, click the “waive copyright” button, read the terms, confirm that I read and understand the terms.
Now this guy is free from all these restrictions to the greatest extent possible!
It's important to note that once these rights are waived, I cannot reclaim them.
CC does not keep a record of licenses so as the publisher it’s up to me to let others know how they may use my work. To make it official, I have to mark my work with the waiver. I have used the suggested HTML and placed it below the video.
I'm also including a link to the CC0 license for good measure here.