lol just kinda did my own thing, I kept the slightly bigger file as the origional and the slightly smaller sized file as the duplicate;;
I'm not sure if you're strict on 'must be exactly the same size' – so I'm wondering ;; if one includes screenshots and the other doesn't -- even though they're the same format -- is that still considered as a duplicate or no? I've run acrossed quite a few that sit on that boundry -- where the preview images are different/promo shots and the videos themselves are identical lol.
Also, kudos for adding this, in the past I've often thought of offering to do this lol