Works with any website I can think of. Allows you to download youtube in playlists, single videos, but also sites like soundcloud for music purposes.
Basically a lot of what I've thrown at it has seemed to work if you need something to scrape individual media content from a web page (maybe even multiple, only tried with single).
For the hell of it, I am ripping all of the tek videos from yt in case they all go poof. Might not happen, but I have the time, space, and internet speed.