THIS. So much.
Having just done an online talk, I can tell you that the audio-visual stuff was BY FAR the most annoying.
More expensive webcam, add way more lighting to my office, get an expensive lavalier mic (highly recommended for lectures--earphones with boom mics drive me nuts as the monitoring has enough delay to be annoying--probably could remove that with a $500 audio interface that has DSP monitoring), learn OBS, realize my laptop has nowhere near the power necessary to drive OBS, build a new Desktop machine outfitted for video (that barely even notices OBS), relearn OBS now that it works beautifully, realize that I don't know even a fraction of OBS but have to get things done, record the lecture, and finally have it presented in potato-cam because the people running the thing have laptops with less power than mine and can't playback the hi-res video I sent them.
The lecture maybe took 40 hours to do. Maybe.
The A/V--probably 120+ hours. And probably will take another 120+ the next round because I'll be more capable with the tools.