RemixVideo or Rekordbox Video

You could use your iPad for that (much easier with touchscreen and all). They are different things though, imho.

RB (and other DJ software) video is really meant to mix BOTH video and music as an integrated solution.

RemixVideo, like it’s audio “brother” RemixLive is more of a (loop)sampler.

So, depending on what you are trying to achieve one or the other will suit your needs best. If you were to use a video switch/fader box you could even use them both I suppose.