I was about to set up a Youtube field for a site I'm working on, using SS3, when I remembered something about the Oembed field that had been mentioned, both on this thread, as well as the blog.
It's described very briefly here:
http://doc.silverstripe.org/framework/en/topics/rich-text-editing
However, I can't get it to work. I'd expect it to work by pressing the "Insert media" button in TinyMCE, choosing "From the web", and insering a URL, e.g.
www.youtube.com/watch?v=c3hVfgtUd6k
When doing so, all I get is a 100x100 px symbol showing something as "media not allowed".
There might be some issues with my local install (e.g. maybe Curl need to be working properly), but I think a little extra documentation on how this is intended to work, as well as how to debug it would be helpful.
Anselm