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YouTube Tests Showing Ads When You Pause a Video, Calls it ''Pause Ads''
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
Tubi does this. It's probably the least I trusive way to handle ads. I'd be fine with it if it was a replacement for in-video ads, but I doubt they're doing that and just want to squeeze more views out of our eyeballs so fuck them
This causes more issues when you have to pause to let the video buffer a while before continuing.