Hi. I did something similar back in 2016 - scripting/abusing the youtube api to skip inside the video.

https://tldws-16b54.web.app/#/discover A little side project that went nowhere.

Website's up, but I'm not sure api calls work anymore.

Anyway, I'm all for TLDWing videos. You are welcome to message me if you think I can contribute eyalfein@gmail.com