You found scholarly or multimedia materials and would like to use it for your personal or academic purposes. Some of the files you can download and edit, others you are not allowed to.
If the creator has released it in the public domain, it's suitable for most uses. If however, the creator has put a requirement to cite them or use it for any purpose except commercial, then you can use it for your class instruction video or presentation but not for an advertisement.
In contrast to copyright, under copyleft, the author gives permission to reproduce, copy, or share works bound by the same licensing terms. The term is mostly applied to the software license.
The public domain works are not eligible for copyright protection or copyright protection has expired. In Kazakhstan copyrighted works become public domain after 70 years. These works can be freely used without copyright owner permission or a license fee.
Creative Commons allows you to register and license your work. Example of the types of licenses.
Reproducing and reusing works without copyright holder permission in ways that are considered fair - such as criticism, comment, news reporting, teaching, scholarship, and research.
There are no fair use or educational use provisions that allow works to be reproduced for educational purposes or make accessible versions such as large print or braille in Kazakhstan. However, most countries that are a signatory of the Bern Convention and WIPO use the following definition of fair use.
Fair Use allows portions of a work to be used without permission as long as certain criteria are met, and original creator(s) given credit:
The term "royalty-free" doesn't equal to "non-copyrighted". The term indicates licensed music/songs without the need to pay royalties to the right owner every time when it is used, but only once when it is purchased.