You can find this kind of content by searching YouTube for 'public domain' and 'non-copyrighted' content or filtering your search to include videos with music licensed by Creative Commons. You can certainly convert and download your own personal YouTube videos, as well as public domain and non-copyrighted videos. Best Hosted Endpoint Protection and Security Softwareīefore diving in, let's get one thorny issue out of the way: Is this type of conversion and download legal? That depends on the video.