that is super cool! how did you build this? I wanted to build something similar where it is analyzing a bunch of pitch videos according to a specific rubric
One thing to be aware of is that using the official YouTube data APIs to get transcripts is pretty much impossible at any scale (more than 10 or so videos). The data APIs have quotas on them and for some reason getting a transcript uses up a lot of quota “points”.
So most people will be bypassing the API and hitting the website to get the transcripts. Works for now - but could break if YouTube decides to make it harder.