It's about a year when I decided to make walking videos regularly. Since then I got 40K subscribers and monthly $800-1000 bonus, but still doing this full time is too much. So I spend about 4 hours a week of which 1-2 hours are walks themselves and other time making map, descriptions and checking comments. I upload about 2-3 videos a week and I have not desire doing it more, and actually making more videos does not make same times more views, more over sometimes I get more views after longer delay.