Giant crocodile-shaped swimming pool in a suburban backyard

AI Timelapse smoke-test · concept crocodile_pool_001 · recipe synth_v1_dev · 2026-04-11 11:22 UTC
$1.803
Total cost
6
Frames
5
Clips
25s
Final duration
69.2 MB
final.mp4 size

Concept & Recipe

Вход: concept.yaml + рецепт. Полностью определяет, что и как генерится.
concept.yaml
slug: crocodile_pool_001 topic: Giant crocodile-shaped swimming pool in a suburban backyard category: pool recipe: synth_v1_dev shape_hint: crocodile location_hint: modern suburban backyard with a tall wooden fence and a white two-story house in the background, perfect green lawn style_anchors: tall wooden fence, white two-story house in background, perfect green lawn, sunny day final_reveal_style: twilight with underwater LED lighting glowing from inside the pool overrides: storyboard: n_stages: 6
resolved recipe (key fields)
image.backend: nano_banana image.model: gemini-3.1-flash-image-preview image.aspect_ratio: '9:16' image.ref_strategy: previous video.backend: kling_fal_16_std video.model: fal-ai/kling-video/v1.6/standard/image-to-video video.duration_sec: 5 video.use_end_frame: true storyboard.llm_model: gemini-2.5-flash storyboard.n_stages: 6 storyboard.master_prompt: prompts/storyboard_synth_v1.txt

Stages (frames) 6 kadры · $0.402 · nano_banana

Each frame generated by Nano Banana. Strategy previous: stage N receives previous frame as I2I anchor (image-first ordering).
frame 1
frames/01_empty_with_outline.png · 768×1376

1empty_with_outline

Bare backyard with the crocodile pool shape outlined on the grass.
no refs (T2I)
image_prompt (sent to gemini-3.1-flash-image-preview)
Aerial drone view of a pristine, perfect green suburban backyard. A tall wooden fence runs along the back and sides. A white two-story house is visible in the background. On the perfect green lawn, a large, detailed outline of a giant crocodile-shaped swimming pool is clearly marked with white spray paint. Sunny daytime lighting, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.
The backyard, fence, house, lawn, and camera angle are established as canonical.
frame 2
frames/02_excavation.png · 768×1376

2excavation

The initial digging of the crocodile-shaped hole has begun, with dirt piles forming.
ref: stage 01
image_prompt (sent to gemini-3.1-flash-image-preview)
Same backyard, same tall wooden fence, white two-story house in background, perfect green lawn, sunny day, same static aerial camera angle. A large, crocodile-shaped hole is partially dug into the lawn. Piles of fresh earth are forming around the excavation site. Small construction machinery and workers are present, depicted as motion blur, actively digging, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.
The backyard, fence, house, lawn, and camera angle must remain identical to Stage 1.
frame 3
frames/03_construction.png · 768×1376

3construction

The main concrete shell of the crocodile pool is taking shape, with rebar visible.
ref: stage 02
image_prompt (sent to gemini-3.1-flash-image-preview)
Same backyard, same tall wooden fence, white two-story house in background, perfect green lawn, sunny day, same static aerial camera angle. The full crocodile-shaped pool shell is now clearly defined, with concrete poured and rebar structures visible, forming the internal shape of the pool. Some formwork might be visible. Dirt piles are still present but more organized. Workers as motion blur are working on the structure, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.
The backyard, fence, house, lawn, and camera angle must remain identical to Stage 1. The excavation from Stage 2 is now further developed into a concrete shell.
frame 4
frames/04_finishing.png · 768×1376

4finishing

Interior surfaces (tiling/plaster) and coping are being added to the pool.
ref: stage 03
image_prompt (sent to gemini-3.1-flash-image-preview)
Same backyard, same tall wooden fence, white two-story house in background, perfect green lawn, sunny day, same static aerial camera angle. The crocodile-shaped pool shell has its interior surfaces (e.g., plaster or tiling) partially or fully applied. Coping stones are being laid around the edge of the pool. Small finishing tools and workers as motion blur are visible. The surrounding lawn is being tidied, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.
The backyard, fence, house, lawn, and camera angle must remain identical to Stage 1. The concrete shell from Stage 3 is now being finished with surfaces and coping.
frame 5
frames/05_filled_furnished.png · 768×1376

5filled_furnished

The pool is filled with water, and the surrounding area is clean and ready.
ref: stage 04
image_prompt (sent to gemini-3.1-flash-image-preview)
Same backyard, same tall wooden fence, white two-story house in background, perfect green lawn, sunny day, same static aerial camera angle. The giant crocodile-shaped swimming pool is completely filled with sparkling blue water. The surrounding lawn is perfectly restored and clean. No construction debris or workers are visible. The pool is ready for use, still daytime, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.
The backyard, fence, house, lawn, and camera angle must remain identical to Stage 1. The pool is now filled with water and the site is clean.
frame 6
frames/06_reveal.png · 768×1376

6reveal

Twilight beauty shot of the filled pool with glowing underwater LED lighting.
ref: stage 05
image_prompt (sent to gemini-3.1-flash-image-preview)
Same backyard, same tall wooden fence, white two-story house in background, perfect green lawn, same static aerial camera angle. The giant crocodile-shaped swimming pool is completely filled with water. It is twilight, and the pool's underwater LED lighting is glowing brightly, illuminating the water and the unique crocodile shape from within. The surrounding backyard is serene and perfectly clean, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.
The backyard, fence, house, lawn, and camera angle must remain identical to Stage 1. The pool is filled, and the time of day shifts to twilight with LED lighting.

Transitions (clips) 5 клипов · $1.400 · kling_fal_16_std

Each transition: start frame → end frame → Kling produces a 5-sec interpolated clip. Camera is constrained to fully static (timelapse style).

1Transition 01 → 02

start frame
start frame
end frame
end frame
result clip (5s)
video_prompt (sent to fal-ai/kling-video/v1.6/standard/image-to-video)
Time-lapse footage from a static aerial camera showing the initial excavation of the crocodile-shaped pool outline. Workers and small machinery move rapidly, digging into the lawn, and dirt piles quickly accumulate around the developing hole. Construction sounds and ambient nature only.

2Transition 02 → 03

start frame
start frame
end frame
end frame
result clip (5s)
video_prompt (sent to fal-ai/kling-video/v1.6/standard/image-to-video)
Time-lapse footage from a static aerial camera showing the rapid construction of the crocodile-shaped pool's concrete shell. Workers pour concrete, install rebar, and remove formwork, quickly defining the pool's structure. Construction sounds and ambient nature only.

3Transition 03 → 04

start frame
start frame
end frame
end frame
result clip (5s)
video_prompt (sent to fal-ai/kling-video/v1.6/standard/image-to-video)
Time-lapse footage from a static aerial camera showing the finishing work on the crocodile-shaped pool. Workers rapidly apply interior plaster/tiling, lay coping stones around the edge, and refine the pool's details. Construction sounds and ambient nature only.

4Transition 04 → 05

start frame
start frame
end frame
end frame
result clip (5s)
video_prompt (sent to fal-ai/kling-video/v1.6/standard/image-to-video)
Time-lapse footage from a static aerial camera showing the final stages of pool completion. The pool rapidly fills with sparkling blue water, and the surrounding backyard is quickly cleaned and landscaped to perfection. Construction sounds and ambient nature only.

5Transition 05 → 06

start frame
start frame
end frame
end frame
result clip (5s)
video_prompt (sent to fal-ai/kling-video/v1.6/standard/image-to-video)
Time-lapse footage from a static aerial camera showing the transition from bright daytime to serene twilight. The already filled crocodile-shaped pool slowly activates its internal LED lighting, casting a beautiful glow from within the water as the sky darkens. Ambient nature sounds only.

Final video ffmpeg concat · hard cut

All 5 clips concatenated via ffmpeg -c copy (lossless, instant).
25s total 69.2 MB 720×1280 h264 30fps $1.803 total cost

Cost breakdown

StepModelUnitsCost
storyboard gemini-2.5-flash 1 $0.0010
frames gemini-3.1-flash-image-preview 6 $0.4020
clips fal-ai/kling-video/v1.6/standard/image-to-video 5 $1.4000
Total12$1.8030

Raw storyboard.json

Show full JSON (6688 chars)
{ "version": "0.2", "concept_slug": "crocodile_pool_001", "topic": "Giant crocodile-shaped swimming pool in a suburban backyard", "category": "pool", "n_stages": 6, "scene_anchors": "Modern suburban backyard with tall wooden fence, white two-story house, perfect green lawn, sunny day, static aerial drone view.", "stages": [ { "n": 1, "name": "empty_with_outline", "description": "Bare backyard with the crocodile pool shape outlined on the grass.", "image_prompt": "Aerial drone view of a pristine, perfect green suburban backyard. A tall wooden fence runs along the back and sides. A white two-story house is visible in the background. On the perfect green lawn, a large, detailed outline of a giant crocodile-shaped swimming pool is clearly marked with white spray paint. Sunny daytime lighting, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.", "consistency_notes": "The backyard, fence, house, lawn, and camera angle are established as canonical." }, { "n": 2, "name": "excavation", "description": "The initial digging of the crocodile-shaped hole has begun, with dirt piles forming.", "image_prompt": "Same backyard, same tall wooden fence, white two-story house in background, perfect green lawn, sunny day, same static aerial camera angle. A large, crocodile-shaped hole is partially dug into the lawn. Piles of fresh earth are forming around the excavation site. Small construction machinery and workers are present, depicted as motion blur, actively digging, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.", "consistency_notes": "The backyard, fence, house, lawn, and camera angle must remain identical to Stage 1." }, { "n": 3, "name": "construction", "description": "The main concrete shell of the crocodile pool is taking shape, with rebar visible.", "image_prompt": "Same backyard, same tall wooden fence, white two-story house in background, perfect green lawn, sunny day, same static aerial camera angle. The full crocodile-shaped pool shell is now clearly defined, with concrete poured and rebar structures visible, forming the internal shape of the pool. Some formwork might be visible. Dirt piles are still present but more organized. Workers as motion blur are working on the structure, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.", "consistency_notes": "The backyard, fence, house, lawn, and camera angle must remain identical to Stage 1. The excavation from Stage 2 is now further developed into a concrete shell." }, { "n": 4, "name": "finishing", "description": "Interior surfaces (tiling/plaster) and coping are being added to the pool.", "image_prompt": "Same backyard, same tall wooden fence, white two-story house in background, perfect green lawn, sunny day, same static aerial camera angle. The crocodile-shaped pool shell has its interior surfaces (e.g., plaster or tiling) partially or fully applied. Coping stones are being laid around the edge of the pool. Small finishing tools and workers as motion blur are visible. The surrounding lawn is being tidied, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.", "consistency_notes": "The backyard, fence, house, lawn, and camera angle must remain identical to Stage 1. The concrete shell from Stage 3 is now being finished with surfaces and coping." }, { "n": 5, "name": "filled_furnished", "description": "The pool is filled with water, and the surrounding area is clean and ready.", "image_prompt": "Same backyard, same tall wooden fence, white two-story house in background, perfect green lawn, sunny day, same static aerial camera angle. The giant crocodile-shaped swimming pool is completely filled with sparkling blue water. The surrounding lawn is perfectly restored and clean. No construction debris or workers are visible. The pool is ready for use, still daytime, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.", "consistency_notes": "The backyard, fence, house, lawn, and camera angle must remain identical to Stage 1. The pool is now filled with water and the site is clean." }, { "n": 6, "name": "reveal", "description": "Twilight beauty shot of the filled pool with glowing underwater LED lighting.", "image_prompt": "Same backyard, same tall wooden fence, white two-story house in background, perfect green lawn, same static aerial camera angle. The giant crocodile-shaped swimming pool is completely filled with water. It is twilight, and the pool's underwater LED lighting is glowing brightly, illuminating the water and the unique crocodile shape from within. The surrounding backyard is serene and perfectly clean, photorealistic, hyper-realistic, 9:16 vertical, no people visible, no CGI.", "consistency_notes": "The backyard, fence, house, lawn, and camera angle must remain identical to Stage 1. The pool is filled, and the time of day shifts to twilight with LED lighting." } ], "transitions": [ { "from_stage": 1, "to_stage": 2, "video_prompt": "Time-lapse footage from a static aerial camera showing the initial excavation of the crocodile-shaped pool outline. Workers and small machinery move rapidly, digging into the lawn, and dirt piles quickly accumulate around the developing hole. Construction sounds and ambient nature only.", "duration_sec": 5 }, { "from_stage": 2, "to_stage": 3, "video_prompt": "Time-lapse footage from a static aerial camera showing the rapid construction of the crocodile-shaped pool's concrete shell. Workers pour concrete, install rebar, and remove formwork, quickly defining the pool's structure. Construction sounds and ambient nature only.", "duration_sec": 5 }, { "from_stage": 3, "to_stage": 4, "video_prompt": "Time-lapse footage from a static aerial camera showing the finishing work on the crocodile-shaped pool. Workers rapidly apply interior plaster/tiling, lay coping stones around the edge, and refine the pool's details. Construction sounds and ambient nature only.", "duration_sec": 5 }, { "from_stage": 4, "to_stage": 5, "video_prompt": "Time-lapse footage from a static aerial camera showing the final stages of pool completion. The pool rapidly fills with sparkling blue water, and the surrounding backyard is quickly cleaned and landscaped to perfection. Construction sounds and ambient nature only.", "duration_sec": 5 }, { "from_stage": 5, "to_stage": 6, "video_prompt": "Time-lapse footage from a static aerial camera showing the transition from bright daytime to serene twilight. The already filled crocodile-shaped pool slowly activates its internal LED lighting, casting a beautiful glow from within the water as the sky darkens. Ambient nature sounds only.", "duration_sec": 5 } ], "recipe_used": "synth_v1_dev" }