SL-10 / Bodies in Motion

Out of the Park

Pitch, swing, contact, gone. Four biomechanical events in two seconds.

The brief

A pitcher delivers, the batter loads and swings, the bat meets the ball, and it leaves the park. Cover it from behind the plate or along the third-base line — but the contact frame has to be in the shot.

Why it's hard

Pitching is a full-body kinetic chain — legs, hips, trunk, shoulder, wrist, in that order. Models tend to animate the arm alone. Then bat-on-ball contact needs a genuine impulse: the ball must reverse direction in a frame, not curve around.

Skill Tests

05 / 28

Animal anatomy Human anatomy Biomechanics Physics & mass Water simulation Crowd dynamics Multi-shot continuity Face consistency Camera movement Unbroken take Motivated lighting Cutting rhythm Hands & fingers Hair & fabric Reflection & refraction Scale & depth Impossible geometry Period accuracy Music sync Aging & time Natural asynchrony Eye-lines & gaze Particle behaviour Motivated light source Consequence & persistence Time manipulation Graphic-layer discipline Colour as storytelling

Every challenge is scored against the same vocabulary, so you can compare them. Lit cells are what this one tests.

Success criteria

The pitch sequences correctly from the ground up — it starts in the legs, not the arm.
The ball reverses direction on contact with a visible impulse, no floating arc.
The bat stays a rigid object: no bending, stretching, or passing through the ball.

Starter prompt

Built with the CEMI MediaMax system for Google Veo 3.1. Prompts stay in English — that is the language these models take instructions in. Treat it as a starting point and start varying it.

baseball-home-run

Night game, a full concrete-and-steel ballpark under six banks of metal-halide towers; the infield dirt freshly dragged, chalk lines crisp. From low behind the plate, at mask height and slightly off-centre: the pitcher lifts his lead leg, strides, holds his hips open ahead of his shoulders, then whips the arm through elbow-first and releases at full external rotation. The hitter loads back, strides, fires the hips before the hands, keeps the barrel inside the ball and makes contact out in front — the bat visibly flexes, the ball flattens against the wood for a frame and rebounds. Camera: 85mm handheld on a shoulder rig, staying with the hitter's follow-through and only then swinging up late to find the ball. Dirty foreground: backstop netting and dust hanging in the tower light. Register of DP Robert Richardson's hot overhead stadium light, hard shadows, halation on the towers.

Style reference: Robert Richardson (DP), hot top-lit stadium contrast

Why it's built this way

Both biomechanical chains are named in order — hips before hands for the hitter, hips before arm for the pitcher — because sequence is what separates a real swing from a mannequin turn. The camera deliberately stays with the body and finds the ball late, which is how a human operator actually behaves and is the opposite of the model's instinct to track the ball perfectly. Vary the lens: a 50mm puts you in the play, a 200mm makes it reportage.

Watch for

Contact that does not read — the ball passing through the bat, or the swing finishing with no deformation and no impact frame; slow only the contact moment with a brief ramp rather than shooting the whole clip in slow motion.

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