Speaking of YuJa, it's the tool ConU uses at an institution-level for lecture capture (replacing Panopto) and they integrate the videos in Moodle. The idea is to either capture your live lecture and distribute it as-is so that learners can go back to it... Or create clips “asynchronously”. Even in remote learning, there's a lot to be said about the flipped classroom. https://www.youtube.com/watch?v=guA21RgRcSg&t=91s

As for video annotations in YuJa, there's a toolbar.