I think this depends on how you define "time spent on" my videos. I don't edit, they're just one-shot vlogs, so technically 10 minutes. Then again, I normally spend a fair amount of time in advance thinking about what I want to talk about. This includes conceptualizing the topic, laying out an outline of my topic and how I want to argue it, and also do any research I want. I then normally recite the topic a couple of times, to get comfortable with saying those words in that order. Then I have maybe 5 takes or so. In the end, it's maybe three total hours for my five minute long vlog. Longer than you might think, but still far less than many people spend. :/