
Model: Sora
Prompt: A partially eaten cookie magically regenerates its missing portion in this photo-realistic footage. The bitten-off section mysteriously fills in, growing back to restore the cookie's perfect circular shape. The realistic cookie appears to be a classic butter or sugar cookie resting on a plain surface, demonstrating an impossible reverse-consumption effect.
Impossible Phenomenon: A partially eaten cookie magically regenerates its missing portion to restore its complete circular shape, violating the law of conservation of mass.
Model: Sora
Prompt: In a photo-realistic scene, a blue balloon rests on a wooden park bench surrounded by trees and grass. Mysteriously, without any external intervention, the balloon undergoes a gradual color transformation from vibrant blue to deep red, defying natural expectations.
Impossible Phenomenon: The balloon spontaneously changes color from blue to red and back to blue without any physical or optical cause.
Model: Sora
Prompt: A realistic scene captures two separate books sliding together on a wooden desk, mysteriously merging into one thicker volume. The seamless fusion defies physics as the books' covers and pages combine into a single, more substantial book in a photo-realistic manner. The ambient lighting casts natural shadows across the desk surface.
Impossible Phenomenon: The book spontaneously splits and replicates itself into three copies, violating the laws of physics and conservation of matter.
Model: Sora
Prompt: A devastating flood suddenly engulfs a small island, creating a surreal photo-realistic spectacle as torrential waters cascade over its terrain. Strangely, the surrounding ocean remains eerily calm and undisturbed, creating a stark contrast between the island's chaos and the serene sea waters. The realistic scene defies natural expectations of how water systems typically interact.
Impossible Phenomenon: A small island spontaneously generates waves radiating outward in all directions, which defies natural wave formation patterns in geographical laws.
Model: HunyuanVideo
Prompt: In this hyper-realistic video, someone takes a bite from a slice of bread, but remarkably, the missing portion regenerates instantly. Set against a plain background, this surreal demonstration defies natural physics as the bread mysteriously restores itself to its original form, appearing fresh and intact as if never bitten.
Impossible Phenomenon: A piece of toast mysteriously disappears as if bitten, despite no one actually taking a bite of it.
Model: HunyuanVideo
Prompt: A motionless suitcase creates a surreal illusion by remaining perfectly still on a continuously moving conveyor belt, defying normal physics. The photo-realistic scene captures this counterintuitive moment where the luggage appears frozen in place while the belt slides smoothly beneath it, likely at an airport or baggage handling facility under fluorescent lighting.
Impossible Phenomenon: The suitcase remains stationary on the moving conveyor belt, defying normal friction physics.
Model: HunyuanVideo
Prompt: A piece of paper mysteriously transforms into steam on a wooden table. The surreal sequence begins with someone placing the paper down, followed by a gentle touch from a human hand that triggers an unexpected reaction - the solid paper instantly vaporizes into wisps of white steam that dissipate into the air.
Impossible Phenomenon: The paper instantly transforms into steam upon touch, which is an impossible rapid state change.
Model: HunyuanVideo
Prompt: A photorealistic timelapse captures the surreal fusion of a sunflower and rose, creating a striking hybrid bloom. The distinctive yellow petals of the sunflower gradually interweave with the deep red rose petals, while maintaining the recognizable features of both flowers. The transformation occurs against a soft, natural background in natural daylight.
Impossible Phenomenon: A rose inexplicably blooms within a sunflower, and the sunflower's skateboard vanishes, both of which are biologically impossible.
Model: HunyuanVideo
Prompt: In a professional boxing ring, two fighters are engaged in intense combat. Unexpectedly, while one boxer maintains his defense with one hand, he bizarrely pulls out a roast duck from his pocket with the other hand and starts eating it mid-fight. The photo-realistic scene captures this surreal moment in the brightly lit arena, with ropes and canvas visible in the background.
Impossible Phenomenon: A man boxes while wearing a suit, eating roasted chicken during the fight, and even feeds his opponent chicken, all of which violate social commonsense.
Model: HunyuanVideo
Prompt: In a photo-realistic scene, an oil portrait of a young girl inexplicably comes to life, breaking the laws of reality as the painted figure begins to move and dance within its frame on the wall. The haunting transformation occurs in what appears to be an indoor setting with ambient lighting, where the formerly static artwork suddenly gains supernatural animation.
Impossible Phenomenon: The girl in the painting comes to life and moves, which is impossible as paintings contain static images.
Model: Kling-1.5
Prompt: In this photo-realistic scene, a person slices through a tomato on a cutting board. Surprisingly, after a piece is cut off, the remaining tomato maintains its shape and structural integrity, appearing almost untouched despite being cut. The kitchen setting features bright lighting that highlights the vibrant red of the fresh tomato.
Impossible Phenomenon: The tomato splits horizontally when the knife cuts vertically, creating an impossible mismatch between the cutting direction and splitting result.
Model: Kling-1.5
Prompt: A person throws stones into a flowing river, creating an impossible floating bridge as the rocks defy gravity and physics. Instead of sinking beneath the water's surface, the stones mysteriously assemble themselves mid-air, forming a solid pathway hovering just above the rippling water. The photo-realistic scene captures this surreal moment against a natural riverbank setting.
Impossible Phenomenon: The stones falling from the sky spontaneously form a bridge instead of falling into water, while a person mysteriously vanishes, violating physical laws of object interaction and conservation.
Model: Kling-1.5
Prompt: A hand pours clear water from a bottle onto dry sand in a photo-realistic scene. Surprisingly, the water completely vanishes into the sand without leaving any wet marks or darkening the surface, defying typical expectations of how water interacts with sand. The sand maintains its original light, dry appearance despite the liquid.
Impossible Phenomenon: The water completely disappears into the sand without leaving any wet marks or darkening the surface, which defies how water normally interacts with sand..
Model: Sora
Prompt: In a photo-realistic scene, a person reaches through their computer screen and impossibly grabs food they were viewing in a video. Initially watching mouthwatering food content on the display, they defy physical boundaries as their hand penetrates the screen's surface, extracting the appetizing meal into the real world. The scene unfolds in a typical indoor setting with ambient lighting.
Impossible Phenomenon: A person reaches through a computer screen to grab food from a video, defying physical boundaries between digital and real worlds.
Model: Kling-1.5
Prompt: An unusual weather phenomenon shows a precise square-shaped patch of dark storm clouds and heavy rainfall against an otherwise clear urban sky. This surreal meteorological anomaly appears as if a localized rain system is contained within invisible boundaries, contrasting sharply with the surrounding bright, cloudless atmosphere over the cityscape.
Impossible Phenomenon: The rainfall appears to be confined within invisible boundaries, creating distinct lines between rainy and clear areas under the same sky, which is an impossible weather phenomenon defying geographical laws.
Model: Luma DreamMachine
Prompt: A slice of toast dramatically falls through the air in this photo-realistic scene. Defying expectations, just before impact, the bread performs an uncanny mid-air flip reminiscent of a cat's righting reflex. Despite the natural tendency for toast to land butter-side up, the slice mysteriously rotates to ensure the sauce-covered surface makes first contact with the ground.
Impossible Phenomenon: A piece of toast spontaneously duplicates multiple pieces of bread out of nowhere, violating the law of conservation of matter.
Model: Mochi 1
Prompt: In this hyper-realistic kitchen scene, a pot of vigorously boiling water undergoes an extraordinary transformation. Steam rises intensely from the pot sitting on a lit stove before the impossible occurs - the bubbling liquid gradually freezes into solid ice, defying the laws of thermodynamics while still positioned over the active flame.
Impossible Phenomenon: The boiling water turns into ice crystals when exposed to flames, contradicting normal thermal behavior where heat causes melting rather than freezing.
Model: Internet
Prompt: Video source.
Impossible Phenomenon: The fried egg suddenly opens its mouth and starts speaking with clear motion, making it a biologically impossible event.
This project aims to advance video research by answering the follow important questions:
• Are today's video understanding models good enough for understanding impossible videos?
• Can today's video generation models effectively follow prompts to generate impossible video content?
To this end, we introduce IPV-Bench, a novel benchmark designed to evaluate and foster progress in video understanding and generation.
Comprehensive evaluations reveal limitations and insights for future directions of video models, paving the way for next-generation video models.