Does Youtube show ads if you disable monetization? I feel like most conference presentation uploads don't have ads, but I also switched to YT premium last year and maybe I'm just misremembering.
https://blog.youtube/news-and-events/updates-to-youtubes-ter...
> ads can now appear on videos from channels not in the YouTube Partner Program (YPP), and we will begin gradually placing ads on brand safe videos
You have to be eligible for ads and sign up for an ad account in order to turn ads off on your own videos.
Youtube also often shows ads if they misdetect part of the video as copyrighted material, which seems to happen more and more often.