This is a funky little thing – Night of the Mini Dead, from Netflix’s Love, Death & Robots. Apparently it’s from the show’s third season which, having firmly bounced off the first season (twice!), I’ve not yet seen. The uploader looks to have chopped it into two parts, though neither part is excessively long.
Part One
Part Two
And The Now Obligatory VFX Breakdown
There’s also a nifty VFX breakdown showing how the majority of the piece is actually augmented stock photography overlaid with GCI and with a tilt-shift effect applied.