Subject motion and speed

Slow motion, the splash rendered at high frame rate and played back slowly, every droplet visible.

Speed ramp: real time as he jumps, slowing to deep slow motion at the top of the jump, back to real time on the landing.

He tosses the phone onto the grass, it lands with a soft thud and does not bounce.

The rain only soaks her jacket further from shot to shot, it never dries between cuts.

Rule for the whole video: she only pours from the left hand, one smooth tilt, never a splash; every pour follows it.