Modell: Seedance 2.5 · Referenzen: zuerst das MP4 als @Video 1, dann @loc_FN_arena_back, @loc_FN_gym, @loc_FN_icebath, @loc_FN_warmup, @loc_FN_ring, @char_FN_boxer1, @char_FN_boxer_bath, @char_FN_boxer_ring · Dauer 20 s · 16:9 · Aufloesung nach Credit-Stand (720p = 130 Credits je Versuch)
Tags vor dem Einfuegen zeichengenau pruefen: so, wie die Elements in Higgsfield heissen. Erst ein 4-s-Test mit Held + einer Plate bei 480p.
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SCENE CONTEXT
Fight night. One boxer, five levels of one building, one camera that only ever rises. Out of the wet asphalt behind the arena where his crew climbs out of the SUV and the trainer gives him the dap, up through the basement gym where he works the heavy bag alone, through the tiled room where he sits in the ice bath, through the warm-up room where his crew claps in a circle around his shadowboxing, and finally out of the canvas of the empty ring where he stands alone, lifts his eyes to the lens and the bell rings as the camera climbs into the lights. Photoreal, night, no dialogue.

REFERENCES (ranked)
@Video 1 (20 s, 1920x1080, 24 fps) = the greybox blocking previz. SOLE authority for camera height, camera speed, easing, framing, tilt and timing, and for the position and scale of every figure and set piece at every moment. The camera moves straight up on one vertical line for all 20 seconds and never pans, orbits or travels sideways. Whenever the frame goes black for a split second (at 4.0, 8.0, 12.0 and 16.0 s) the camera is passing through a floor into the NEXT level, never back to a previous one. The red box IS the boxer in every level: on level 0, 1 and 3 he is @char_FN_boxer1, on level 2 he is @char_FN_boxer_bath, on level 4 he is @char_FN_boxer_ring. The cyan box is the trainer on level 0, the coach on level 2 and 3, the trainer outside the ropes on level 4. Grey boxes are crew members. The black box with four cylinders on level 0 is the SUV. The dark hanging cylinders on level 1 are heavy bags. The grey block on level 2 is the ice tub. The light platform with the thin white lines on level 4 is the ring with its ropes; the dark tiers with small grey boxes are the stands with the crowd. Every black-and-white checkerboard surface becomes the real floor or ground of the level that is active at that moment. Nothing else is inherited from @Video 1: no material, no colour, no light.
@loc_FN_arena_back = the rear of a sports arena at night: board-formed concrete wall, raised loading dock, a steel roller door open with warm tungsten light spilling onto wet black asphalt, chain-link fence and sodium lamps, one unbranded black full-size SUV. DESIGN reference only: materials, palette, practicals, mood. Do not copy its camera angle or framing. Active 0.0 to 4.0 s only.
@loc_FN_gym = a clean old-school boxing gym in a windowless basement at night: identical matte black heavy bags on chains at one height, plain steel-grey block walls, dark hardwood floor, a row of caged fluorescent tubes overhead, one bare tungsten bulb in a green enamel shade over the centre. DESIGN reference only. Active 4.0 to 8.0 s only.
@loc_FN_icebath = a plain recovery room under the arena: mid-grey ceramic tiles to shoulder height with painted concrete above, a rectangular matte black cold plunge tub with a brushed stainless steel basin, still water with floating ice, a square steel drain in the floor, one industrial LED batten light overhead and a warm tungsten wall lamp over the steel door. DESIGN reference only. Active 8.0 to 12.0 s only.
@loc_FN_warmup = a concrete-block warm-up room under the arena: painted grey blocks, a long mirror on one wall, black rubber floor with white tape lines, a steel bench with towels, a caged fluorescent tube overhead. DESIGN reference only. Active 12.0 to 16.0 s only.
@loc_FN_ring = a boxing ring at the centre of a dark arena: white canvas, plain black corner pads, four white ropes per side, a black lighting truss with hard white fixtures directly above the ring, thin haze in the beams, the crowd as dark silhouettes fading into blackness. DESIGN reference only. Active 16.0 to 20.0 s only.
@char_FN_boxer1 = male boxer, about thirty, light-brown skin, shaved head, short black beard, a small old scar through the left eyebrow, calm unreadable face; black cotton hoodie with the hood up, black satin boxing shorts with a plain waistband, white cloth hand wraps. Identity and wardrobe ONLY, 100% matches the reference; no pose, camera or background from the sheet. It is one man, not three. Active 0.0 to 8.0 s and 12.0 to 16.0 s.
@char_FN_boxer_bath = the same man, shirtless and wet, hand wraps off, black shorts, skin flushed from cold water. Identity ONLY, 100% matches the reference. It is one man, not three. Active 8.0 to 12.0 s.
@char_FN_boxer_ring = the same man in a black hooded satin ring robe over a bare torso, hood up, black satin shorts, black leather boxing gloves over white wraps. Identity and wardrobe ONLY, 100% matches the reference. It is one man, not three. Active 16.0 to 20.0 s.
The trainer / coach (no image reference, from this text only, the SAME man on levels 0, 2, 3 and 4) = male, about fifty-five, heavy build, dark-brown skin, close-cropped grey hair, grey stubble, deep lines around the eyes; black zip-up track jacket with a plain collar, black track pants, white trainers, a white towel over his left shoulder on every level. Crew members and the crowd carry no fixed look.

LOCKS
@Video 1 is the SOLE authority for camera movement, cuts and timing, 1:1 frame-aligned. If this text and the video disagree, the video wins. The previz is re-dressed, never re-imagined.
The camera only rises. No pan, no orbit, no push-in, no lateral travel anywhere in the 20 seconds. On every level it shoots up out of the floor fast, settles to a slow cruise at the boxer's height, and shoots up fast again through the ceiling; the exact speed at every moment comes from @Video 1.
Exactly FIVE levels, each appearing exactly once, in this order: 1) arena back entrance 0.0 to 4.0, 2) gym 4.0 to 8.0, 3) ice bath room 8.0 to 12.0, 4) warm-up room 12.0 to 16.0, 5) ring 16.0 to 20.0. No level repeats. Each black dip is a doorway forward.
Exactly ONE boxer in the whole film, the same man in every level, rendered from the reference named for that level. No second boxer, no duplicate, no half-body at the frame edges.
Level 0: exactly one SUV, one trainer, three crew members, no other vehicle, no other people. Level 1: the boxer alone. Level 2: the boxer and one coach. Level 3: the boxer and eight people standing in a circle around him, one of them the coach. Level 4: the boxer alone inside the ropes, one trainer outside the ropes on the floor, the crowd only as dark seated silhouettes beyond the ring light.
Steam rises only from the ice water and the boxer's breath on level 2 and stays over the tub. Haze exists only inside the light beams on level 4. Nothing else smokes or steams.
Nobody looks at the lens at any time, with ONE exception: the boxer on level 4 from 18.5 s to 20.0 s.
These locks hold for the full 0 to 20 s.

GEOGRAPHY / BLOCKING
The camera stands on the same spot on every level, to the boxer's front-right at about three and a half metres, and rises straight up. The boxer holds frame centre on every level.
Level 0, behind the arena: the boxer stands on wet asphalt at frame centre facing frame-right. The trainer stands half a step further from camera, frame-right of him, facing him, their hands clasped. The SUV fills frame-left behind the boxer, its flank toward camera, rear wheel nearest. One crew member stands at the far frame-left edge by the SUV's front, one in the background beyond the bonnet, one in the foreground frame-left with his back half to camera. The open steel roller door glows far frame-right in the background above the loading dock. Above everything the concrete canopy of the dock, which the camera passes through at 4.0 s.
Level 1, the gym: the boxer stands at frame centre facing frame-right, the heavy bag he works hanging at arm's length frame-right of him, seven more identical bags hanging around him at one height, the nearest two at the frame edges. One bare bulb in a green shade hangs directly above him.
Level 2, the ice bath room: the boxer sits chest-deep in the black cold plunge tub at frame centre, the tub the size of a bathtub, his shoulders and head above the rim, arms along the rim. The coach stands frame-right of the tub at the same depth, a stopwatch in his hand, facing the boxer. Grey tiles on every wall.
Level 3, the warm-up room: the boxer stands at frame centre shadowboxing. Eight people stand in a circle around him at about two metres, the two nearest to camera cut by the left and right frame edges in the foreground, the coach among them frame-right. Black rubber floor with white tape lines, the mirror on the far wall.
Level 4, the ring: the boxer stands at the exact centre of the canvas, gloves up at his chin, facing the camera side. The ring is turned so that one rope side runs straight across the foreground between camera and boxer, its four white ropes stacked at the bottom of frame at the start, the far ropes behind him; no corner post near the lens. The trainer stands outside the ropes far frame-right on the arena floor. Beyond the ring the dark stands rise on every side with seated silhouettes. Directly above the ring the black truss with its white fixtures, which the camera climbs into at the end.

FIRST FRAME
Frame one is already the street. The lens is 35 centimetres above the wet asphalt, tilted slightly up. The boxer stands at frame centre, hood up, hand clasped with the trainer who stands frame-right facing him. The SUV's black flank and rear wheel fill frame-left, close. The lit roller door glows small far frame-right. Three crew members are visible: foreground frame-left, far frame-left, background. No empty frame, no delayed reveal.

TIMELINE (timed beats)
0.0 to 0.6 s: the camera climbs out of the wet asphalt, the SUV's wheel and sill sliding down past the lens, the two men's legs and the clasped hands at centre. The crew shifts weight, one closes the SUV door with a thud.
0.6 to 2.5 s: the camera rises to eye level and slows on the dap: the clasped hands pull into a quick half hug, one pat on the back, the handshake held a beat longer, the trainer says something short, the boxer nods once. The door light catches the wet asphalt and the SUV's roof. END 2.5 s: figures 4, SUV 1, trainer's hand on the boxer's shoulder.
2.5 to 4.0 s: the camera accelerates upward, looking down onto the SUV roof and the tops of the two men's heads, the hug releasing, the dock and its warm doorway passing below, and at 4.0 s the frame goes black inside the concrete canopy.
4.0 to 4.6 s: the camera climbs out of the gym floorboards, the room evenly lit by the tubes above, the boxer's boots and the bottom of the bag at centre.
4.6 to 6.5 s: the camera slows at his height: two jabs and a hook into the bag, the bag swinging on its chain and coming back, his breath sharp on each punch, the hood shadowing his face. END 6.5 s: figures 1, bags 8, bag swinging.
6.5 to 8.0 s: the camera accelerates up past the bulb, looking down onto his hood and shoulders and the bags hanging around him like a dark forest, into the ceiling, black at 8.0 s.
8.0 to 8.6 s: out of the tiled floor, the black tub rising into frame with the boxer's shoulders above the rim, the coach's shoes and the stopwatch.
8.6 to 10.5 s: the camera slows at his height: he sits still in the ice, breath steaming in slow clouds, one involuntary shiver through the shoulders, jaw set, the coach glances from the stopwatch to him and back. END 10.5 s: figures 2, tub 1, ice floating.
10.5 to 12.0 s: the camera accelerates up, looking straight down into the tub, ice and water around his shoulders, the steel basin and the tile grid, into the ceiling, black at 12.0 s.
12.0 to 12.6 s: out of the black rubber floor, trainers and tape lines, the circle of legs around him.
12.6 to 14.5 s: the camera slows at his height: the eight people clap on a shared beat, he shadowboxes at the centre, slip, slip, one-two, a quarter pivot, breath in rhythm with the claps. END 14.5 s: figures 9, circle intact.
14.5 to 16.0 s: the camera accelerates up, the circle reading as a ring of bodies from above with him turning at its centre, into the ceiling, black at 16.0 s.
16.0 to 16.6 s: out of the white canvas, the near ropes crossing the foreground and sliding down out of frame as the camera climbs, the boxer's boots and the black hem of the robe at centre beyond them.
16.6 to 18.5 s: the camera slows at his height: he stands still, gloves at his chin, the robe hood up, the arena breathing around him in the dark. END 18.5 s: figures 1 inside the ropes, trainer 1 outside.
18.5 to 20.0 s: he lifts his eyes and finds the lens, holds. The camera keeps rising, looking down on him small at the centre of the canvas, the ring shrinking, the white fixtures of the truss entering the top of frame and flooding it; the bell rings at 19.6 s; at 20.0 s the frame is white light.

DIALOGUE
No dialogue. The trainer's short words on level 0 are not intelligible, low, under the room tone.

ACTING TASK — THE BOXER (he is fully invested in his tactic; the work happens in his eyes):
SCENE DIRECTION (shared, unspoken): keep tonight ordinary; nobody makes a thing of it.
MOTIVE (his fuel): if he lets it become big he will feel it, and he cannot afford to feel it before the bell.
GOAL: arrive in the ring with nothing left in his head.
OBSTACLE: every quiet moment lets the fear surface; one unguarded look and the routine cracks.
TACTIC: he keeps his eyes busy with the task in front of him. With the trainer he checks both of the man's eyes for the sign that the trainer believes it, then nods once and looks away first. At the bag he looks at the exact spot he hits, nothing else. In the ice he fixes a point on the tile and counts the coach's stopwatch in his head. In the circle he watches his own hands and the floor tape, never the faces. In the ring he looks at the far ropes until 18.5 s, then lifts his eyes and gives the lens one long steady look, the first time all night he lets anyone see in.
(Safety: gaze always engaged in the task, never a frozen, glassy, unfocused stare; natural blink cadence.)
ACTING TASK — THE TRAINER / COACH (cyan figure on levels 0, 2, 3, 4):
SCENE DIRECTION: keep it ordinary.
MOTIVE: he has seen what happens when a fighter starts to think.
GOAL: get the boy to the ring calm.
OBSTACLE: he is not calm himself.
TACTIC: at the dap he holds the handshake a beat too long and reads the boxer's eyes for the crack; at the ice bath he watches the stopwatch more than the man so the man does not feel watched; in the circle he claps the beat and keeps the others on it; outside the ropes he stands still with his arms folded and does not look up at the lights.
(Safety: gaze engaged, natural blinks.)
CREW (grey figures): background life only, routine, small continuous movement, nobody crosses the boxer's face, nobody looks at the lens.

PHYSICS
The SUV has mass: the door closes with a heavy thud and the body barely rocks. The dap is real contact: palms slap, the pull into the half hug shifts both men's weight, the pat lands. The heavy bag swings on its chain with delay after each punch and comes back to meet the next; the chain creaks and the bag's leather dents under the fist. Ice water reacts when he shivers: ripples, ice knocking against steel, a small slop over the rim; breath vapour drifts up and disperses in the cold air. Sweat on his skin under the gym bulb, water running off his shoulders in the tub. The robe hem and hood move with his small shifts of weight; the ropes are taut and do not sway. Feet have heel contact and weight transfer in every level.

LIGHTING
Night throughout, exposed two and a half stops under, crushed blacks; the brightest thing in every frame is a practical. Level 0: the open roller door far frame-right is the key, throwing warm tungsten across the wet asphalt and along the SUV's flank; sodium lamps give a cold top light; the men's faces are lit from the side and half fall to shadow; no flat front light. Level 1: a row of caged fluorescent tubes gives even cool light across the whole gym, walls and bags readable, and the bare bulb in the green shade directly above the boxer adds warm hard top light on his hood and shoulders. Level 2: an industrial LED batten light above the tub, cool and clean on the water and the grey tiles, one warm tungsten wall lamp over the door in the background. Level 3: a single caged fluorescent tube overhead, grey block walls, the mirror throwing the circle back. Level 4: the truss directly above the ring is the only key, hard white top light flooding the canvas, the boxer top-lit with his eyes in shadow until he lifts them into the light, the stands in darkness with only the silhouettes' edges catching spill; at the end the fixtures themselves fill the frame and burn it white.

GRADE / LENS / FORMAT
16:9, 20 seconds, one continuous vertical rise; the four black dips are floors, not edits. Palette of cold steel-blue shadows, tungsten and sodium amber practicals, deep crushed blacks, fine 35 mm film grain, soft highlight roll-off. One fixed lens for the whole film, exactly as in @Video 1: a classic wide field of view of about 75 degrees that never changes, no zoom, no push-in; the framing changes only because the camera rises. Environment visible to the frame edges, straight lines stay straight, no fisheye curve. Clean glass and contained glows.

SOUND
SFX only, no music, no dialogue. Level 0: wet asphalt, a heavy car door, palms slapping in the dap, a pat on a back, low voices under the room tone, the dock's ventilation hum, a distant siren. Level 1: chain creak, leather thuds, sharp breath on each punch, the bulb's faint buzz. Level 2: water moving, ice knocking against steel, breath, one shiver, the stopwatch button click. Level 3: eight pairs of hands clapping on one beat, trainers squeaking on rubber, breath in rhythm. Level 4: the arena's low hum, a distant crowd murmur, one rope creak, then the single ring of the bell at 19.6 s and its decay into white.

FORBIDDEN
No readable text anywhere, no logos, no brand badges on the SUV. No second boxer, no duplicate of him at any frame edge. No camera movement other than the vertical rise. No sixth level and no return to an earlier one. No music.