The problem is that CSV dump does not update. You can import it into your wordpress tube, schedule for some future time, but what you will do when all the scheduled posts run out?
This is why XML files are much better than a CSV dump. The XML updates constantly so your wordpress tube does. You don't need to import the updated CSV's again and again, once set up, the XML feeds will update your site with fresh videos absolutely automatically.
Also I'd suggest to synonymize and extend (amplify with some additional texts) the descriptions of syndicating posts to avoid SE filters
