I'm curious whether this is a problem other people have.
When I'm learning from YouTube, I often remember that a tutorial explained something, but I can't remember which video it was or where the explanation was. Searching YouTube usually only searches titles and descriptions, not the actual content of the video.
So I've been building a search engine that indexes what's actually inside videos—captions plus text that appears on screen—so you can search for a concept and jump directly to the relevant moment.
For example, instead of rewatching a 90-minute tutorial, you could search for something like "JWT refresh token" or "Docker bridge network" and go straight to the explanation.
I'm not trying to promote anything at this stage. I'm trying to validate whether this is a real problem.
Would a tool like this be useful in your workflow? If not, what would stop you from using it? I'd really appreciate honest feedback.