El reel es yo hablando en una playa sobre kits de propulsión DIY para muebles, con montajes de B-roll de IA: un sillón despega con cuatro mini turbinas, y un amigo y yo volamos nuestro sofá hasta el escaparate de una tienda para comprar snacks. Las líneas habladas van de los 2.4 a los 5.9 segundos, y cada clip tiene una línea que cubrir.

Todos los fallos de cámara que aparecen a continuación se deben a mis prompts. Los modelos hicieron lo que escribí, así que lo útil es saber qué escribir en su lugar.

Una cámara fija al sujeto

Para el vuelo de vuelta desde la tienda quería que ambos rostros se mantuvieran grandes, así que el prompt de MiniMax H3 decía: “La cámara vuela hacia atrás frente al sofá a la misma velocidad, manteniendo el sofá centrado y con el mismo tamaño en el fotograma.”

H3 hizo exactamente eso. El sofá permanece en el centro del fotograma durante todo el vuelo mientras la ciudad se desliza por detrás, pareciendo una cinta de correr. Una snorricam, una cámara montada en el cuerpo del actor, consigue ese mismo efecto de fijación a propósito, para transmitir pánico o desorientación.

En un trayecto, el sujeto necesita movimiento en pantalla: entra, cruza, se encoge, sale. Dale a la cámara una velocidad relativa al sujeto, más lenta para que el sujeto se aleje, y cuenta lo que pasa: "tres tejados y un pequeño barrido cuadrado bajo la lente".

Un gran movimiento en un plano corto

Para una versión horizontal del B-roll quería una cámara en movimiento, y escribí movimientos que se adaptarían a un plano de 20 segundos. El plano del fútbol tenía que hacer un movimiento de grúa desde la vista central hacia arriba para mirar sobre el sofá, y luego volver a subir con la grúa en 3.8 segundos. El prompt decía "amplitud media a velocidad lenta", pero ese recorrido en ese tiempo no puede ser lento.

MiniMax H3 Turbo · 4 s

Cenital en menos de dos segundos

Desde la altura de los ojos hasta justo encima del sofá en 1.8 segundos, y luego de vuelta bajando por el limonero.

MiniMax H3 Turbo · 6 s

El mundo se inclina y vuelve a su sitio

La silla se eleva mientras la cámara oscila por encima de ella y regresa, todo en unos dos segundos y medio.

Un clip tan corto mantiene un solo movimiento de cámara, como lo haría un plano con slider en un set. En esto es en lo que trabajo ahora:

Duración del planoLo que encajaCómo escribirlo
3 a 4 sUn movimiento a velocidad lenta constante, en una sola dirección“un avance lento, aproximadamente un 8% más cerca al final”
5 a 6 sUn movimiento, con una desaceleración suave si lo deseas“un suave deslizamiento lateral de medio metro”
8 s o másUn cambio de movimiento puede funcionarLa secuencia de abajo, para un trayecto entre dos lugares

Un movimiento pequeño, con un número

Después hice los mismos planos en Google Flow como clips de 4 segundos, cada uno con un movimiento lento y un tamaño definido. Dos de ellos aparecen abajo. Se ven tranquilos y la acción se entiende; estos son los clips que se incluyeron en el reel final.

Google Flow · 4 s

Botón, propulsores, despegue

La prensa, el encendido y la elevación se leen perfectamente porque la cámara no los altera.

Google Flow · 4 s

Turbinas, una deriva suave

El escape sigue cayendo recto hacia abajo y el fondo se desplaza un poco.

El flujo se movió mucho menos de lo que le indiqué. Comparé el fondo del último fotograma de cada clip con su primer fotograma, una comprobación aproximada con una precisión de hasta 1%. Las dos últimas filas son los planos de fútbol y de snacks vacíos, que también se incluyeron en el reel.

PlanoSolicitadoMedido por el último fotograma
SillónUn 5% más cercaNo más cerca; el fotograma se desplazó aproximadamente un 4% de su altura
TurbinasArco de 15 grados, aproximadamente 15% más cercaNo te acerques; ocupa aproximadamente un 2% de su anchura lateral
FútbolUnos 8% más cercaDe vuelta al fotograma inicial, tras ampliarse un 3% a mitad de camino
Snacks vacíosUnos 8% más cercaUnos 3% más ancho, en la dirección opuesta

Para B-roll bajo una voz que funcionaba bien, y las mantuve. Si necesitas un acercamiento, la gente lo notará; pide a Flow más de lo que quieres y luego compara el primer y el último fotograma. H3 fue en la dirección opuesta cuando le di margen, así que comprueba cada modelo por separado. Solo tengo estas cuatro tomas de Flow, y no he aplicado los mismos valores a H3.

Los fotogramas fijados tienen más peso que el prompt, así que comprueba que la cámara que describes pueda conectarlos. Mi fotograma final de un sillón aprobado se grabó desde una cámara más alta, lo que obliga a un gran movimiento por pequeño que lo pidas, así que escribí el Flow del sillón basándome solo en el primer fotograma. Cuando ambos fotogramas comparten el mismo encuadre, el movimiento no tiene hacia dónde ir. Recortar el último fotograma un poco más ajustado debería permitir un push-in donde aterrizar, pero no tengo ninguna toma que lo demuestre.

Un viaje entre dos lugares

El vuelo desde el escaparate hasta la terraza de la casa es el único plano que necesitaba un cambio de cámara, porque el primer y el último fotograma están en lugares distintos. Funcionó como una toma continua en cuatro tiempos:

  1. La cámara se queda junto a la ventana y el sofá sale volando del plano por la parte superior derecha. Mantén un momento el cielo vacío.
  2. La cámara se desplaza por sí sola, un vuelo FPV o de dron sobre los tejados.
  3. La cámara llega primero a la terraza y se detiene en la esterilla vacía.
  4. El sofá entra en el fotograma desde la parte superior y reduce la velocidad hacia el último fotograma.

Salir del plano y volver a entrar le da distancia al espectador, y los rostros solo necesitan detalle en los primeros y últimos compases, donde los fotogramas fijados lo proporcionan.

MiniMax H3 Turbo · 5 s

Los cuatro tiempos en 5 segundos

El fallo es la aparición: hacia los 4 segundos, el sofá aparece como un rastro borroso y ambos rostros se deforman durante unos cuatro fotogramas, así que revisa ese momento fotograma a fotograma.

Google Flow · 8 s

La toma que se incluyó en el reel

Ocho segundos dieron espacio a cada tiempo, y aun así tuve que recortarlo. El discurso dejó 4.35 segundos, así que eliminé la parte media del vuelo y reproduje el resto a unos 1.1x. Pedir ocho segundos fue mi error de planificación; un relevo debería empezar por la duración de la frase.

Cómo escribir la cámara

Dale a la cámara su propia frase, con el movimiento, su tamaño y su velocidad. Si se mezcla en la frase del sujeto, el modelo puede dividir el movimiento entre ambos. La acción ocurre en los primeros segundos, porque un clip de 4 segundos puede acabar teniendo solo 2.5 segundos en el montaje:

Camera: one slow, steady [push-in / arc / slide] for the whole shot, about [8% closer / 15 degrees / half a metre] by the end, constant slow speed, same height and angle.
Action, in the first three seconds: [what the subject does].

Describe lo que aparece en el fotograma y evita el uso de "no X". MiniMax H3 no tiene un canal negativo y tiende a mostrar lo que nombras, por lo que escribí "la alfombra permanece plana sobre la cubierta" en lugar de "la alfombra no se mueve".

Más movimientos y la destreza

Para más movimientos, aicameramovements.com tiene 46 movimientos de cámara con previsualizaciones en bucle y un prompt para copiar de cada uno. Sus prompts dejan el tamaño abierto, así que añade tú mismo el número.

He convertido estas reglas en una habilidad que un agente de IA puede seguir al escribir prompts de vídeo: ajustar el tamaño del movimiento según la duración del plano, el relevo de cuatro tiempos, qué hacer con los fotogramas fijados y qué movimiento encaja con cada tiempo. Descarga el archivo y pide a tu agente de IA que instale esta habilidad.

Descargar camera_moves_skill.md

MiniMax H3 completo · 5 s · primer y último fotograma

El vuelo bloqueado

How the reference pictures align with the target video - Picture 1 (from Shot 1) aligns with the 0.00-second mark of the target video; Picture 2 (from Shot 1) aligns with the 5.17-second mark of the target video.

integrated_multimodal_description: [Shot 1] Photoreal digital cinema, bright Portuguese afternoon sun from the upper left, crisp deep focus, a single continuous aerial take with no cuts. The scene opens exactly on <Picture 1>: a worn sage-green fabric sofa hovers in mid-air beside an open second-floor window with a teal shutter on a whitewashed Portuguese building, about four and a half metres above a narrow cobbled street; far below are the green awning and MERCEARIA sign of a small grocery and a street of white houses running down to a blue river. Four brushed-steel turbines under the sofa blow steady glowing exhaust columns straight down. On the left sits a slim young man with platinum-blond hair and a thin moustache and goatee, in an oatmeal hoodie, light-grey joggers and tan slippers, a blue bowl on his lap. On the right sits a man with short light-brown hair, clean-shaven, in a navy T-shirt, faded jeans and navy slippers, holding a tablet in his left hand with its dark-grey back toward the camera; with his right hand he takes a brown paper grocery bag holding crisp packets, a drink bottle and a baguette from a smiling dark-haired shopkeeper woman leaning out of the window. From 00:00.000 to 00:01.100 the shopkeeper releases the bag with a small wave and stays inside at the window; the man on the right lifts the bag across and stands it upright on the seat between the two men, the baguette sticking out of the top. From 00:01.100 to 00:03.500 the sofa rises a metre, turns gently away from the building and flies forward over the town, level and steady, both men seated and relaxed. Directly beneath it pass, clearly and in focus, terracotta tiled rooftops, white chimneys, a small square with a tree and glimpses of the blue river, all moving past at a steady readable pace. Meanwhile the blond man pulls a red crisp packet out of the bag and tears it open, and the man on the right rests his right hand on the small black button panel on the right-hand armrest, steering, the tablet still in his left hand with its back to the camera. The camera flies backward in front of the sofa at the same speed, with large amplitude at medium speed, keeping the sofa centred and the same size in frame, so both men's faces stay large, sharp and fully visible. From 00:03.500 to 00:04.600 the sofa slows and descends toward a terracotta-tiled terrace in front of a whitewashed house with teal shutters, cream French doors, a lemon tree and pots of lavender; the camera decelerates and lowers with it to terrace height as the house rises into the background, and the sofa comes to a steady hover about half a metre above a charcoal mat, exhaust still glowing straight down. The blond man starts pouring crisps from the red packet into the blue bowl. From 00:04.600 to 00:05.170 the composition holds exactly as in <Picture 2>: the sofa hovering over the mat, the grocery bag between the men, crisps pouring into the bowl, the tablet's back to the camera, his right hand on the armrest buttons, both men smiling.

overall_soundscape: The crinkle of a paper bag, a steady turbine whine, wind rushing past during the flight, distant town ambience, church bells far away and swifts, the tear of a crisp packet, then crisps rattling into a bowl as the whine settles into an even hover.

non_diegetic_music: N/A

MiniMax H3 Turbo · 6 s · primer y último fotograma

La grúa del sillón

How the reference pictures align with the target video - Picture 1 (from Shot 1) aligns with the 0.00-second mark of the target video; Picture 2 (from Shot 1) aligns with the 6.58-second mark of the target video.

integrated_multimodal_description: [Shot 1] Photoreal digital cinema, natural daylight, widescreen, a single continuous take with a moving camera. The scene opens exactly on <Picture 1>: a man with short light-brown hair, a dark-green sweatshirt, beige chinos and brown slippers sits in an olive-green fabric recliner with its footrest raised, reading an open paperback held in both hands, eyes open on the page, calm face. The recliner stands on a charcoal carpet on a weathered wooden garden deck in front of a red-brick house with white French doors, terracotta pots and a flowering garden on both sides. A thick black control pad with grey buttons and one green button sits on top of the armrest at the left of the chair. Under the seat four compact brushed-steel turbines point straight down, cold. From 00:00.000 to 00:02.300 the camera dollies slowly toward the chair with small amplitude while he reads, then takes his right hand off the book, keeping it open in his left, and presses the green button with his index finger. At 00:02.400 the four turbines ignite, glowing exhaust and heat shimmer blowing straight down onto the carpet. From 00:02.800 to 00:05.000 the recliner lifts off level to about half a metre above the carpet, which stays flat on the deck, and he smiles; the camera cranes up with medium amplitude at medium speed, rising above the chair and looking down on him and the glowing jets, the deck and carpet opening up below. From 00:05.000 to 00:06.000 the camera eases back down with small amplitude at slow speed to the chair's height. From 00:06.000 to 00:06.580 the composition holds exactly as in <Picture 2>: the chair hovering over the empty carpet, book in his left hand, right index finger on the green button, a pleased smile, eyes open.

overall_soundscape: Quiet garden ambience with birdsong and the rustle of a page, a click of the button, then four small turbines spooling up into a smooth steady whine with a soft rush of air onto the carpet.

non_diegetic_music: N/A

MiniMax H3 Turbo · 4 s · primer y último fotograma

La grúa de fútbol

How the reference pictures align with the target video - Picture 1 (from Shot 1) aligns with the 0.00-second mark of the target video; Picture 2 (from Shot 1) aligns with the 4.46-second mark of the target video.

integrated_multimodal_description: [Shot 1] Photoreal digital cinema, natural daylight, widescreen, a single continuous take with a moving camera. The scene opens exactly on <Picture 1>: two men sit side by side on a worn sage-green fabric sofa on a terracotta-tiled terrace in front of a whitewashed Portuguese house with teal shutters and cream French doors, a lemon tree, pots of lavender and a distant river view, under bright afternoon daylight. The sofa rests on a charcoal mat; the four brushed-steel turbines under it point down at the mat, cold and still. On the left sits a slim young man with platinum-blond hair and a thin moustache and goatee, in an oatmeal hoodie, light-grey joggers and tan slippers. On the right sits a man with short light-brown hair, clean-shaven, in a navy T-shirt, faded jeans and navy slippers. The blond man holds a blue bowl of crisps on his lap, his right hand in the bowl. The man on the right holds a tablet in both hands with its dark-grey back toward the camera and its screen toward the two of them; both watch a football match on it. From 00:00.000 to 00:01.800 the camera cranes up from the centre view with medium amplitude at slow speed, rising to look down over the sofa, the bowl and the terrace tiles. From 00:01.800 to 00:03.800 it cranes back down with medium amplitude at slow speed to the centre view. Meanwhile the blond man picks up one of the last crisps and raises it to his mouth, eyes on the tablet, and the man on the right breaks into a warm smile at the match, the tablet steady with its back to the camera. From 00:03.800 to 00:04.460 the composition holds as in <Picture 2>: the blond man biting the crisp over a nearly empty bowl, the man on the right smiling at the hidden screen.

overall_soundscape: A crisp crunch, faint football commentary and crowd noise from the tablet speaker, a light breeze and distant gulls.

non_diegetic_music: N/A

Google Flow · 4 s

El sillón

Photorealistic, natural daylight, one continuous take. A man with short light-brown hair, a dark-green sweatshirt, beige chinos and brown slippers sits in an olive-green fabric recliner with its footrest raised, reading an open paperback held at chest height in both hands, eyes open, calm face. The recliner stands on a charcoal carpet on a weathered wooden garden deck in front of a red-brick house with white French doors, terracotta pots and a flowering garden. A thick black control pad with grey buttons and one green button sits on top of the armrest at the left of the chair. Under the seat four compact brushed-steel mini jet turbines point straight down, switched off.
Camera: one slow, steady push-in for the whole shot, about 5% closer by the end, constant slow speed, same height and angle.
Action: in the first second he takes his right hand off the book, keeping it open in his left hand, and presses the green button with his index finger. Right after the press the four turbines ignite, glowing exhaust and heat shimmer blowing straight down onto the carpet. Then the recliner lifts off vertically, slowly and perfectly level, rising about half a metre while the carpet stays flat on the deck; he settles back with a small pleased smile, eyes open, finger still on the button, and the chair hovers steadily on four glowing downward jets.
Sound: garden birdsong, a click of the button, then four small turbines spooling up into a smooth steady whine with a soft rush of air onto the carpet.

Google Flow · 4 s

Las turbinas

Photorealistic macro product shot, natural garden daylight, shallow depth of field, one continuous take. A low view under an olive-green fabric recliner hovering just above a charcoal carpet on a wooden garden deck; the sitter's beige chinos and brown slippers at the top of the frame. Four compact brushed-steel mini jet turbines in a row under the seat point straight down, each blowing a warm glowing column of exhaust and heat shimmer onto the carpet; the garden, terracotta pots and brick house are soft behind. The chair stays perfectly still in the air.
Camera: one slow, steady move for the whole shot - a gentle arc of about 15 degrees to the right around the turbines while drifting about 15% closer, constant slow speed, so the row of turbines turns slightly in perspective and the blurred garden slides behind them.
The exhaust keeps falling straight down, rippling the carpet fibres and bending the light.
Sound: a close, steady turbine whine and a constant rush of air onto the carpet, faint birdsong.

MiniMax H3 Turbo · 5 s · primer y último fotograma

El relevo en H3

How the reference pictures align with the target video - Picture 1 (from Shot 1) aligns with the 0.00-second mark of the target video; Picture 2 (from Shot 1) aligns with the 5.17-second mark of the target video.

integrated_multimodal_description: [Shot 1] Photoreal digital cinema, bright Portuguese afternoon sun, crisp deep focus, one continuous take in which the camera changes its move from beat to beat. The scene opens exactly on <Picture 1>: a worn sage-green fabric sofa hovers in mid-air beside an open second-floor window with a teal shutter on a whitewashed Portuguese building, about four and a half metres above a narrow cobbled street; far below are the green awning and MERCEARIA sign of a small grocery and a street of white houses running down to a blue river. Four brushed-steel turbines under the sofa blow glowing exhaust straight down. On the left sits a slim young man with platinum-blond hair and a thin moustache and goatee, in an oatmeal hoodie, light-grey joggers and tan slippers. On the right sits a man with short light-brown hair, clean-shaven, in a navy T-shirt, faded jeans and navy slippers. The blond man holds a blue bowl on his lap; the man on the right holds a tablet in his left hand with its dark-grey back toward the camera and with his right hand takes a brown paper grocery bag with crisp packets, a drink bottle and a baguette from a smiling dark-haired shopkeeper woman leaning out of the window. From 00:00.000 to 00:00.800 the camera stays still: the shopkeeper lets go of the bag and waves, and he sets the bag upright on the seat between the two men. From 00:00.800 to 00:01.700 the camera stays where it is while the sofa rises and accelerates away to the upper right, shrinking quickly, and flies out of the frame past its top-right edge; the camera tilts up with small amplitude at slow speed after it and holds for a moment on the empty blue sky above the rooftops and the shopkeeper still waving at the window. From 00:01.700 to 00:03.500 the camera itself takes off: an FPV camera flight in one continuous take, the viewer is the flying camera, fast and low with large amplitude, skimming over terracotta tiled rooftops, weaving between white chimneys, three rooftops and a small square with a tree sweeping under the lens, then diving along a sloping street toward the river. From 00:03.500 to 00:04.200 the camera arrives at a terracotta-tiled terrace in front of a whitewashed house with teal shutters, cream French doors, a lemon tree and pots of lavender, decelerates sharply and settles at terrace height into the end-frame composition, where a charcoal mat lies empty in the middle of the tiles and the warm afternoon light is still. From 00:04.200 to 00:04.700 the sofa drops into the frame from its top edge with both men seated, the four turbines blowing glowing exhaust straight down, slows and comes to a steady hover about half a metre above the mat, the grocery bag between the men; the blond man starts pouring crisps from a red packet into the blue bowl, and the man on the right holds the tablet with its back to the camera, his right hand on the armrest buttons. The camera holds still. From 00:04.700 to 00:05.170 the composition holds exactly as in <Picture 2>.

overall_soundscape: The crinkle of a paper bag and the shopkeeper's laugh, a turbine whine that rises and fades into the distance, wind roaring past during the camera's flight over the rooftops, swifts and distant church bells, then the whine growing again as the sofa drops in, and crisps rattling into a bowl as it settles into an even hover.

non_diegetic_music: N/A

Google Flow · 8 s

El relevo en Flow

Photorealistic cinematic shot, bright Portuguese afternoon sun, one continuous 8-second take. A worn sage-green sofa on four brushed-steel mini jet turbines hovers in the air. On the left sits a slim young man with platinum-blond hair in an oatmeal hoodie and light-grey joggers, a blue bowl on his lap; on the right a man with short light-brown hair in a navy T-shirt and faded jeans, holding a tablet with its dark-grey back toward the camera.
0-1.5 s: beside an open second-floor window above a cobbled street and the MERCEARIA grocery, the man on the right takes a brown paper grocery bag with a baguette from the smiling shopkeeper and sets it on the seat between them; she waves. The camera holds steady.
1.5-3 s: the sofa rises and flies away over the rooftops, getting smaller, and leaves the frame at the top right. The camera stays by the window and tilts up a little after it.
3-6 s: the camera glides forward on its own in a smooth, steady drone flight low over terracotta rooftops, white chimneys and a small square, descending toward a whitewashed house with teal shutters and a lemon tree.
6-8 s: the camera slows and settles on the sunny terrace, framing an empty charcoal mat. The sofa drops into frame from above with both men seated, the turbines blowing glowing exhaust straight down, slows, and hovers half a metre above the mat while the blond man pours crisps from a red packet into the blue bowl. The shot ends on the last frame.
Faces, clothes and props stay the same throughout. Sound: paper bag crinkle, a turbine whine fading into the distance, wind during the flight, swifts and distant church bells, then the whine returning and crisps rattling into a bowl.

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