I can find plenty of programs that can manipulate music, but I am having trouble finding a program that can do the same to Music Videos. Is there a program or way that I can DJ a song where the partnering video reflects the song? For example if I want to loop or change the sample rate/beats bpm a spot in the music the video would also reflect in real time aligning for the next song splice.
I'm not sure why you'd have trouble finding said software because there are a lot of options.
VirtualDJ was one of the first that I remember with the ability but that was 10 years ago or more and I'm not sure what the best options are these days. I know Serato can do video now too with a plugin of some kind. Some versions of Djay Pro include video support which might be your cheapest option and they also have a separate mobile app called Vjay that does video.
Really I'd but more surprised that a modern DJ app doesn't do video.