Comment créer des vidéos IA réalistes

I want to make a short vertical 9:16 video, about 25 seconds, in three shots. Two friends in their late twenties, a man and a woman, talk straight to a camcorder on a New York rooftop, on a fire escape and on the street, where they catch a yellow taxi. Here are their lines: [paste the script]. It is set in the late 1990s and should look like real footage from a consumer camcorder of the time: handheld, warm late-afternoon sun, soft optics, analog grain. They are casual and funny, like friends being filmed, not presenters. It should feel candid, nostalgic and real, not like an ad. Before writing any prompts, help me plan it: describe each character and each place in detail, then break the script into shots with the framing, the camera move and what happens in each one.

ROOFTOP. SHE: Everyone's trying to make cinematic AI videos, but most of them still look... AI. HE: The trick isn't just the model, it's how you build the whole shot.
FIRE ESCAPE. SHE: This is where the magic happens.
STREET. HE: That's the NOLGIA workflow. SHE, from the back of a taxi: Start making with NOLGIA today. Comment 'nol' to know more.

Solid white background. Create an ultra-realistic cinematic character reference sheet for a young adult woman in her mid-to-late 20s, designed for a realistic video campaign.

CHARACTER:
A naturally beautiful but completely believable young woman, around 25-28 years old. Long naturally styled light brown / dark blonde hair with soft volume, expressive eyes, natural eyebrows, realistic facial proportions and subtle imperfections. Warm, confident, playful personality. She should feel like a real person rather than a professional model.

WARDROBE:
Simple understated casual clothing with a slightly nostalgic late-1990s / early-2000s feeling: fitted dark burgundy long-sleeve top, relaxed blue jeans, small gold earrings and delicate layered gold necklace. Simple everyday accessories. No visible logos, no text, no branding. Keep the exact outfit and accessories identical across every frame.

CHARACTER SHEET LAYOUT:
Create a single professional character reference sheet containing multiple realistic photographic frames of the EXACT SAME WOMAN:
1. Full-body front view
2. Full-body 3/4 view
3. Medium waist-up front view
4. Medium 3/4 view
5. Side-profile view
6. Natural relaxed expression
7. Genuine smile / small laugh
8. Speaking naturally, mouth slightly open as if mid-sentence
9. Curious / surprised expression
10. EXTREME FACE CLOSE-UP showing authentic real skin texture, visible pores, tiny imperfections, peach fuzz, fine facial hairs, natural lips, subtle under-eye texture and realistic eye detail

The extreme close-up must look like a real cinema-camera photograph of human skin. Preserve natural skin texture. NO beauty filter, NO airbrushing, NO plastic skin, NO excessive makeup, NO CGI.

VISUAL STYLE:
Extremely photorealistic live-action photography. Warm nostalgic consumer-camcorder aesthetic inspired by late-1990s / early-2000s home-video footage. Slightly soft vintage lens rendering, subtle analog grain, gentle highlight halation, mild chromatic imperfections, natural exposure, warm organic skin tones, slightly lifted blacks and subdued contrast.

LIGHTING:
Natural available light. Soft daylight through windows, warm practical lamps indoors, occasional gentle sunlight hitting the hair and face. Slight natural lens flare and atmospheric glow when appropriate. Lighting must feel accidental and real rather than professionally staged.

CAMERA:
Handheld consumer/prosumer camcorder aesthetic. Camera is physically close to the subject, with imperfect human framing and subtle handheld movement. Occasional slight focus hunting and natural focus falloff. Mostly 35mm-50mm equivalent perspective, with the extreme close-up using a portrait lens.

ENVIRONMENT:
Authentic everyday locations such as a cozy neighborhood café, apartment, kitchen, hallway, sidewalk or casual restaurant. Realistic lived-in backgrounds, practical objects and imperfect environments. Nothing overly luxurious or artificially perfect.

IMPORTANT:
This is a CHARACTER CONSISTENCY SHEET. Every frame must depict the exact same woman with identical facial structure, hairstyle, skin tone, body proportions, jewelry and clothing. No identity drift. No wardrobe changes. No face reshaping. No beauty retouching.

Overall feeling: intimate, candid, nostalgic, playful, slightly funny, warm and extremely realistic - like a genuine person being casually filmed on an old camcorder, not a polished commercial model.

SEEDANCE 2.5 - ROOFTOP SCENE / 9:16 VERTICAL

Use the EXACT SAME male and female characters from the supplied character sheets.

Preserve their exact facial identity, hairstyle, skin tone, body proportions, clothing and accessories.

NO identity drift.
NO wardrobe changes.

FORMAT:
9:16 vertical.

LOCATION:
Authentic New York City rooftop, late 1990s America.

Concrete rooftop, brick walls, rooftop equipment, pipes, vents, water-tower elements and NYC skyline clearly visible.

The two characters feel like effortlessly cool young adults casually hanging out, not commercial presenters.

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LIGHTING
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Warm late-afternoon natural sunlight.

Use realistic sunlight and shadow across both characters.

Warm highlights on their faces and hair, natural shadows across their clothing and parts of their faces.

Allow subtle exposure breathing, highlight blooming and occasional natural lens flare as the camera moves.

The lighting must feel completely natural and available.

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0:00-0:02 - OPENING
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Start with a creative LOW-ANGLE handheld shot showing BOTH characters and the NYC rooftop.

The FEMALE is casually leaning against a rooftop wall.

The MALE is sitting casually on the inner side of the rooftop parapet, slightly slouched.

He is ALREADY smoking.

The female looks directly toward the camera and says:

“Everyone’s trying to make cinematic AI videos, but most of them still look…”

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FEMALE PERFORMANCE
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The female uses her hands while speaking, but ONLY in subtle, realistic conversational ways.

Her gestures should be restrained and believable:

- small movement of one hand while making a point
- slight open-palm gesture
- tiny wrist or finger movement
- occasionally moving one hand closer to her body
- relaxed natural arm movement

Do NOT have her constantly wave her hands.

Do NOT exaggerate the gestures.

Do NOT use influencer-style hand movements.

Her hands should sometimes remain completely still while she speaks.

The gestures should happen organically and occasionally, matching the rhythm of her speech.

She remains relaxed against the wall.

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0:02-0:05 - SUDDEN OPTICAL ZOOM
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As she continues speaking, suddenly hit the physical 1990s camcorder zoom rocker.

FAST, JERKY OPTICAL ZOOM:

LOW-WIDE TWO-SHOT
→ QUICK OPTICAL ZOOM
→ TIGHT CLOSE-UP OF FEMALE.

The zoom is sudden and slightly imperfect.

Mechanical zoom-rocker feel.
Small handheld wobble.
Brief motion softness.
Tiny autofocus adjustment.
Subtle exposure breathing.

End on a tight close-up.

She looks DIRECTLY INTO THE CAMERA and finishes:

“…AI.”

Keep her expression natural and understated.

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0:05-0:07 - SHORT SIDEWAYS PAN TO MALE
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IMPORTANT CAMERA INSTRUCTION:

The male is positioned relatively close to the female in the composition.

When transitioning from the female to the male, DO NOT make a long horizontal sweep across the entire rooftop.

Instead, perform the SHORTEST POSSIBLE SIDEWAYS HORIZONTAL PAN needed to move from her to him.

Think:

FEMALE CLOSE-UP
→ QUICK SHORT SIDEWAYS TURN
→ MALE.

The camera should rotate toward the SIDE OF THE FRAME WHERE THE MALE IS LOCATED.

The pan travels toward the NEAREST / SHORTEST SIDE of the next character.

If the male is just to the right of the female, pan quickly RIGHT.

If he is just to the left, pan quickly LEFT.

Never choose the longer direction around the composition.

The camera does NOT travel around the rooftop.

It simply makes a quick, short horizontal handheld turn toward the nearby character.

NO tilt up.
NO tilt down.
NO diagonal movement.
NO orbit.
NO push-in.
NO pull-out.

Keep the camera at approximately the same height.

Allow slight handheld motion blur and a tiny autofocus adjustment during the short pan.

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0:07-0:10 - MALE
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The short sideways pan lands naturally on the male.

Frame him in a low-angle medium close-up while still showing enough rooftop and NYC skyline to establish the location.

He remains relaxed and slightly slouched.

He is already smoking.

Warm sunlight catches one side of his face while the other remains naturally shaded.

He takes a small drag.

Subtle smoke catches the sunlight.

He looks toward camera and says:

“The trick isn’t just the model - it’s how you build the whole shot.”

He makes only a small, natural gesture with the cigarette.

No exaggerated movement.

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CAMERA STYLE
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Authentic late-1990s consumer/prosumer camcorder.

Handheld and imperfect, but visually intentional.

Use:
- creative low angles
- tight close-ups
- wide rooftop establishing framing
- sudden optical zoom
- short reactive sideways pan
- subtle handheld shake
- natural framing corrections
- realistic sunlight and shadows
- occasional focus breathing
- slight motion blur

The camera should feel like a real person casually filming their friends.

The camera movement should NEVER feel like modern stabilized cinema.

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1990s IMAGE
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Extremely photorealistic.

Authentic late-1990s American camcorder.

Slightly soft optical image.
Natural analog grain.
Warm organic skin tones.
Lifted blacks.
Subdued contrast.
Gentle highlight blooming.
Subtle halation.
Mild chromatic imperfections.
Natural lens flare.
Realistic exposure fluctuations.

Must look like actual footage recorded in the late 1990s, NOT modern footage with a retro filter.

NO gimbal.
NO perfect stabilization.
NO smooth cinematic zoom.
NO digital zoom.
NO long sweeping pan.
NO complicated camera movement.
NO exaggerated hand gestures.
NO influencer behavior.
NO beauty filter.
NO plastic skin.
NO CGI appearance.
NO background music.

Only authentic NYC rooftop ambience, distant traffic, wind and naturally recorded dialogue.

Cast: @Image1 is Male1. @Image2 is Female2.

SEEDANCE 2.5 - FIRE ESCAPE STAIRCASE SCENE / 9:16 VERTICAL

Use the EXACT SAME male and female characters from the supplied character sheets.

Preserve their exact:
- facial identity
- hairstyles
- skin tones
- body proportions
- clothing
- jewelry/accessories

NO identity drift.
NO wardrobe changes.

FORMAT:
9:16 vertical.

LOCATION:
Authentic New York City fire escape staircase attached to an old brick building, late-1990s America.

The environment should clearly read as a real NYC fire escape: aged brick walls, metal staircase, urban buildings, rooftop elements and NYC street visible below.

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CAMERA + OPENING
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Start with a CREATIVE LOW-ANGLE handheld shot from below the fire escape staircase, looking upward as both characters walk DOWN the stairs.

Do NOT shoot through railings as a framing device.

Keep the camera physically close to them and slightly below their level.

The female is slightly ahead of the male.

The camera follows them with genuine handheld camcorder movement.

She looks DIRECTLY INTO THE CAMERA while walking and says:

“This is where the magic happens.”

Her delivery is casual, playful and natural.

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FEMALE PERFORMANCE
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While saying the line, she uses ONLY subtle, natural hand gestures.

Small conversational movements:
- slight movement of one hand
- relaxed wrist movement
- a small open-palm gesture
- subtle movement toward herself

Her hands should NOT constantly move.

No exaggerated pointing.
No influencer gestures.
No theatrical acting.

Her eye contact with the camera is important - she should keep looking directly into the lens while speaking.

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TIGHT CLOSE-UP
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As she says the line, the camera moves into a VERY TIGHT CLOSE-UP of her face.

Use a creative low-angle perspective.

Her face fills most of the vertical frame while the NYC fire escape and brick building remain recognizable around the edges.

Keep the camera handheld and imperfect.

Small natural camera shake.
Subtle focus breathing.
Slight motion softness.
Tiny framing corrections.

She continues walking down the stairs while maintaining eye contact with the lens.

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SUNLIGHT + SHADOW
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Use natural late-afternoon sunlight.

As they descend the fire escape, sunlight falls across the female's face and hair while parts of her face naturally fall into shadow.

The camera movement causes the sunlight to shift subtly across her face.

Use:

- warm sunlight
- natural hard/soft shadows
- subtle highlight blooming
- slight lens flare
- realistic exposure breathing
- natural skin texture

Do NOT use studio lighting.

The sunlight should feel like real available NYC afternoon sunlight captured on a 1990s camcorder.

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ENDING - JUMP
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As the female finishes:

“This is where the magic happens.”

Both characters reach the bottom of the fire escape.

They playfully jump down from the final low step onto the pavement together.

The jump should be small, natural and spontaneous - NOT a stunt.

As they jump, the camera operator reacts naturally with a quick downward shake and slight reframing.

Hold for a brief moment as they land.

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CAMERA STYLE
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Authentic late-1990s American consumer/prosumer camcorder.

Creative but spontaneous handheld photography.

Use:
- low-angle perspective
- tight facial close-up
- slight upward perspective
- natural handheld shake
- spontaneous framing corrections
- subtle motion blur
- autofocus breathing
- realistic exposure fluctuations
- sunlight and shadow interaction

The camera should feel like a friend casually following them down the fire escape.

NOT professional stabilized footage.

NO gimbal.
NO Steadicam.
NO perfect stabilization.
NO smooth cinematic tracking.
NO digital zoom.
NO slow motion.
NO exaggerated camera movement.

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1990s IMAGE
--------------------------------------------------

Extremely photorealistic.

Authentic late-1990s American camcorder footage.

Slightly soft optical image.
Natural analog grain.
Warm organic skin tones.
Lifted blacks.
Subdued contrast.
Gentle highlight blooming.
Subtle halation.
Mild chromatic imperfections.
Natural motion blur.
Realistic skin pores and fine facial hairs.

Must look like ACTUAL late-1990s footage, NOT modern footage with a retro filter.

NO beauty filter.
NO plastic skin.
NO CGI appearance.
NO exaggerated acting.
NO influencer behavior.
NO background music.

Only natural NYC street ambience, footsteps, distant traffic, fire escape sounds and naturally recorded dialogue.

Cast: @Image1 is Female2. @Image2 is Male1.

Fast-paced 1990s jazz-blues instrumental background score, mysterious, quirky and slightly unpredictable. Designed as an energetic underscore beneath spoken dialogue.

Tight, dry brushed drums with a quick nervous groove, walking upright bass, short staccato electric piano chords, muted jazz guitar riffs, occasional muted trumpet stabs and strange little keyboard flourishes. Use syncopation, abrupt pauses, unexpected chord changes and quick musical turns to create a clever, mischievous feeling.

The mood is mysterious and serious but subtly wacky - like a clever character is about to reveal something unusual. Fast-moving without becoming loud or aggressive. Keep the melody fragmented and understated so it never competes with narration.

Strong 90s analog character: dry studio recording, warm tape saturation, slightly dusty texture, punchy drums, tight bass, minimal reverb. Feels like a quirky 90s Japanese TV show, detective scene, creative-tech segment or fast-paced documentary.

NO romance, NO sentimental melody, NO dreamy atmosphere, NO epic cinematic buildup, NO funk, NO vocals, NO big solos. Keep it instrumental, rhythmic, tense, playful and constantly moving.