Would it be too much to manage to retroactively tag the embedded videos with "partner_training" and "ecommerce_videos" or some other unique tagging system? Then you can supply the tag url to your community by placing it prominently in the Space where the current videos reside. Dress it up within an html widget or an announcement.
If you tag them with a very unique tag , you can also use an RSS widget to display them using the url with a tag at the top level. This could also show the description text for them.