It's doesn't work on whatever. For instance my Main video Platform is Brighteon.com because I need to post in High Definition because I make E-Learning videos. https://www.brighteon.com/channel/slicktricks is my actual channel and when I tried to post a video over on the new D.tube setup with a link from my Brighteon Channel it told me that the URL was not a video, so it would not work. Maybe they will add some more of the more obscure platforms out there in the future, but as of right now it doesn't work for me. I don't have YouTube and never would, so I don't have the option to use the link post. I also don't like the idea that after a few months time all of my videos on the block-chain here won't be accessible and I will have to keep an eye on it so I can re-post those videos as they become unavailable. To be honest if I would have known that was the way it works, I probably would have looked elsewhere an past over D.tube.