[webprofusion]

Excellent, also check out the https://alphatab.net library which would let you render guitar pro tracks for the video.

Around 2013 I built a guitar tab synced to youtube video proof of concept thing and promptly let it rot, should have done more with it!

[adrianh]

Soundslice (https://www.soundslice.com/) is a fully baked version of this idea. Tabs synced with videos, with a full notation/tab editor and tons of built-in music practice tools.