Originally Posted by NatalieMojoHost

Yep, most of these scripts have importers, among them Buran (Buran CMS - Adult Tube CMS), TubeAce (https://tubeace.com/), Izix (https://izix.site/), not to mention the more reputable Mechbunny (https://www.mechbunny.com/) and KVS (https://www.kernel-video-sharing.com/), which aren't WP-based.