I'm going to finally build my beat-aware video player. (Along with a musical phrase-guessing game/training tool.)

I already built a quick POC (to see if the tech I want to use is viable): https://youloop.leftium.com/

Several years ago, I built another POC that does beat-tracking. (However it's slightly broken and I accidentally deleted the source code): https://phrasier.leftium.com/