editing Program to make a moving video slideshow

[rschwartz33]

Such as seen here:

https://www.youtube.com/watch?v=Hm3JodBR-vs

I know I can do it manually in premiere, but I'm working with probably 50 clips, and they have to be exactly side by side, so this would be pretty difficult.

Thanks

 

[WalterB]

After Effects.
There are probably templates for it as well...