1:20 into King of the Planet #9 trailer. It's one of the features. I've used it for a number of shots in various KotP videos. It doesn't work at the moment though, needs fixing.
I don't think this one has worked in many months. I need to find time (or another modder) to fix this because I know casters would use it again.
That's just the normal free camera. You can find the hotkey for that in the game's settings. This mod took control of yuor camera almost entirely and did some nice cinematics until you toggled it off again. It looks like I can fix it but nearly every part of the api that I used has been changed, so it will take some refactoring to bring this back.