A fun thing did happen while I was preparing everything for the ProductHunt launch (it is live right now), in order to get some audio into the video, I recorded the video using macos built-in recorder (cmd+shift+5) + desktopaudio (for the audio part) and then merged the two files :)
I think I may be working on a tool to merge video, audio and voice over (if possible my/your own voice) but that's for later, I'd like to hear your thoughts on this tool.