my YouTube stuff is all CC BY, so people can post wherever they like. Perhaps I will toss it on archive.org as well if I ever do it. Related post coming up...
I had to do a search to find that out, because it occurred to me that whatever it is you’re wanting to do a talk about should fit in with the topic of the particular conference. At least this one is fairly general.
So, if for example, you wanted to do a talk about Alfresco, you’d probably not want to do it at a SharePoint meeting for Microsoft partners.