Videos like these are an okay guide, but you have to keep in mind that those speeds and feeds are really only applicable to his machine.
For instance the CNC router at Artifactory tops out at 1300mm/min linear speed, but the spindle being 1500w is capable of much deeper cuts with bigger cutters than what he is using here.
Ultimately the best way to work this out it is to do the math on it and then work back from there until you find something that works well for the machine you're using.
https://www.cncshop.com/calculate-feedsIf you look at the top chart you can see the recommended RPM and from that the linear feed rate, while the lower chart gives you some typical chip loadings for different materials.