Motion Track a static shot with crop

I have multiple clips of dancers shot with a static camera. I want to put all the dancers on one screen at the same time so they dance together. The problem is they are really small since the camera is wide and static, so when I go to fit 9 of them on the screen, they are really small. Is there a way to automatically motion track the dancer around the screen copped in so that I don't need to make each shot 33% scale. I could Motion track and export to prores and crop them, but I would like to avoid having hundreds of extra prores files to do this as I have to do this with many songs and many hundreds of dancers.

TrackX does this.
vimeo.com/124021177

Thank you, I just downloaded the trial to test it out.