What I'm looking for would be something like a Wiki with YouTube built in — make a playlist of videos with embedded links for certain job based tasks. And reuse and recycle those videos in other playlists of other tasks as they may be applicable. It would go beyond the actual IT we work with and would include things like, "Welcome to working in this department. Here are 20 videos detailing stupid procedures you need to go through to request access to customers' systems/networks/databases to even think about doing your job." I tried MediaWiki and Xwiki, and maybe I'm doing it wrong, but I can't seem to find a way to tweak them to YouTube-level simplicity for anyone to contribute to without giving up on the thing because its' a pain in the butt.
My only real requirement is that it not be cloud-based because it will contain certain sensitive information and I'd like it all to live on one virtual machine if at all possible. I can't be the only one with this problem of enabling many people to contribute and sort their knowledge without knowing how an HTML tag works, or copying files into something more complicated than a web browser. What approaches have any of you out there taken to trying to solve a similar problem?