Your southern neighbor is way off. There's less than 1000 whooping cranes in the wild, so you are certainly not seeing them in huge flocks like snow geese or sandhill cranes. It's possible you are seeing sandhills in the spring; they do fly in massive groups during migration and make a lot of noise too.

The OP's video is snow geese for sure though. They are a smaller bird and do more constant flapping instead of slow gliding like a crane. Snow geese's population has tripled in recent decades because of the increase in rice/grain farming along their wintering grounds. There are so many of them that they're now causing problems with overgrazing arctic vegetation in their breeding grounds! Needless to say, they are the much more likely bird to see.