You should look at platforms designed with editorial workflows in mind — most offer some way to write time stamped notes/ graphics and such (along with a way to

You should look at platforms designed with editorial workflows in mind — most offer some way to write time stamped notes/ graphics and such (along with a way to export them), and synchronize their appearance to the video while remaining fully searchable. Frankie (by cospective) is excellent in this space, although even Vimeo provides some ability to do this at this point.