The plugin can handle videos hard-code embedded with iframes in your posts and pages.
YouTube
When YouTube videos are embedded with code like this :
<iframe width=”480″ height=”360″ src=”http://www.youtube.com/embed/tX-1sx-DOFY” frameborder=”0″></iframe>
Vimeo
When Vimeo videos are embedded with code like this :
<iframe src=”http://player.vimeo.com/video/50922066?title=0&byline=0&portrait=0″ width=”560″ height=”420″ frameborder=”0″></iframe>