Not sure which way gravity acts

Trampolines are capable of bending space-time, so any way could be up on this gif

The way i see it, the up of the trampoline is when the camera shake due to the impact of the jump

It's a curved trampoline. And I want one.

It's right side up with the gif, look at the end when she jumps straight up before flying forward, chances are either it's a very clever loop or we have supergirl on a trampoline