Gee, the adult with the camera could've helped a little here. BUT, as they say, what's a kid's face when it comes to making a really funny video, right?
Looks like there was face/ dirt contact. Pretty bad stuff, especially for today's kids. I doubt a seatbelt of the type you'd find in that sort of vehicle would hold one in, in that scenario.
I think he'd heal up fine nonetheless...better him than me!