Films on Demand is a repository of excellent educational videos that you can choose to share with your students.
Six buttons to the right of the hyperlink icon in the Rich Content Editor, you’ll see an icon that looks like a v (or a down arrow). When you click on that one you see:
If you select Films on Demand you get:
Which is a much bigger window, with more filtering options, than what you get when you choose YouTube or TEDEd for your video needs.
An additional feature this search window has is that you are able to preview the video before you make your embedding decisions.