Show HN: High-precision video playlist search (demo)

Sifting through videos for a specific piece of information is a problem I've come across as a developer (and more generally, as someone who watches a lot of informational/instructional videos).

Over the past few weeks, I've built Topica as an app that helps viewers search for the exact moments they're looking for in a video catalog/playlist. Along with that, I've built out a clickable “interactive transcript” that makes it easy to follow along and jump around in a given section of video.

I've used Sam Altman's "How To Build The Future" video playlist as a demo (but the MVP lets users build out and index an entire catalog/playlist). I’ve also put up a landing page here:

https://topica.io

Still in the early stages (and obviously still a bit rough around the edges), but I'd appreciate any feedback!