This mainly has value for game development I think, but other programs that feature a lot of animation could benefit from it as well.
When I say “high-speed camera” you might think of cameras that cost in the range of hundreds of thousands to millions of dollars but actually from what I’ve seen on YouTube even a camera that would capture some hundred FPS could provide interesting insight. Preferably at a not too low resolution though. Some cameras like that exist for the price around some hundreds to under a couple of thousand dollars. It might be worth looking into. And let me know if you find one that seems especially good and with not too big of a price tag because I am looking too and haven’t found quite the perfect one yet.
Btw it probably helps if you have some other intended use for the camera as well like for example to take photos and pictures of things in the nature.