Articles can contain video content, images, Cloud docs, and other media. Mixing different media types within an article can be helpful when explaining a complex concept using different mutually-reinforcing visuals.
Note that a video inside of an article cannot be individually tracked for auto-completion, assigned to people, or added to tracks.
To embed a video into an Article, go to your catalog, and select New ⇒ Article.
In the Description tool bar, click on the "Embed" icon. From the drop down select Video. You will be shown a dialog, which you will enter the supported video URL. The video player will then display in the description body.