In not sure if this might be of any use to any youtubers possibly. I made a little webpage to display a waveform and show sections etc, wholly over engineered and probably completely unnecessary but unfortunately i was out of action for a time so gave this a bash

hope it might be of use to someone, if not feel free to point and laugh at me.
Pete
link: https://wavepresenter.apps.petesteege.com
image preview - https://petesteege.com/wp-content/uplo ... .12.27.png