## Text-to-Video Generation

Our model generates high-quality videos directly from text descriptions.

### "a border collie balancing on a fallen log over a shallow stream; locked-off shot with gentle world motion; natural lighting"

480p • 16fps • 5s

### "a campfire crackling with embers lifting; static shot; night warmth, ultra-realistic, 4K 2"

480p • 16fps • 5s

### "a cassowary stepping through rainforest shade; locked-off telephoto with soft bokeh; golden-hour warmth, ultra-realistic, 4K."

480p • 16fps • 5s

### "a chameleon rolling its eyes in different directions; handheld with minimal sway; overcast soft light, ultra-realistic, 4K; soft"

480p • 16fps • 5s

### "a chef tossing vegetables in a pan; medium shot; stovetop glow, ultra-realistic, 4K."

480p • 16fps • 5s

### "a chipmunk stuffing seeds into full cheeks; locked-off shot with gentle world motion; blue-hour ambience, ultra-realistic, 4K; l"

480p • 16fps • 5s

### "a colorful nebula drifting with subtle motion; locked-off shot with gentle world motion; natural lighting, ultra-realistic, 4K;"

480p • 16fps • 5s

### "a corgi wearing neon-pink sunglasses on a sunlit pier; drone orbit with steady altitude hold; light film grain for realism; gold"

480p • 16fps • 5s

### "a giant panda nibbling a bamboo shoot; cinematic handheld at eye level; natural lighting, ultra-realistic, 4K."

480p • 16fps • 5s

### "a heron stepping carefully in marsh shallows; handheld with minimal sway; overcast soft light, ultra-realistic, 4K; soft depth o"

480p • 16fps • 5s

### "a humanoid robot practicing slow tai chi in a plaza; handheld with minimal sway; blue-hour ambience, ultra-realistic, 4K; occasi"

480p • 16fps • 5s

### "a kettle venting steam on a stove; static composition with foreground elements drifting; light film grain for realism; window li"

480p • 16fps • 5s

### "a penguin waddling across wet rocks; gentle push-in from a stable tripod; overcast soft light, ultra-realistic, 4K; soft depth o"

480p • 16fps • 5s

### "a potter shaping clay on a spinning wheel; low-angle tilt up revealing the scene; occasional lens flare at frame edge; clean stu"

480p • 16fps • 5s

### "a puffin turning its head with a beak full of fish; gentle push-in from a stable tripod; natural lighting, ultra-realistic, 4K;"

480p • 16fps • 5s

### "a rooftop garden swaying in wind; smooth dolly-in along ground-level sliders; soft depth of field and creamy bokeh; candlelit gl"

480p • 16fps • 5s

### "a sailboat drifting on calm water; wide shot; hazy sunlight, ultra-realistic, 4K."

480p • 16fps • 5s

### "a sheep flock drifting across a grassy hillside; locked-off shot with gentle world motion; golden-hour warmth, ultra-realistic,"

480p • 16fps • 5s

### "a skier floating through fresh powder; slow gimbal push-in with subtle handheld micro-shake; light film grain for realism; misty"

480p • 16fps • 5s

### "a small service robot trundling down a neon alley; handheld with minimal sway; blue-hour ambience, ultra-realistic, 4K; natural"

480p • 16fps • 5s

### "a snail extending its eyestalks after a light mist; gentle push-in from a stable tripod; blue-hour ambience, ultra-realistic, 4K"

480p • 16fps • 5s

### "a starfish gripping a tidepool rock as water swirls; gentle push-in from a stable tripod; natural lighting, ultra-realistic, 4K;"

480p • 16fps • 5s

### "a tram sliding past in light rain; handheld follow with natural breathing sway; a faint fingerprint smudge catching light; harsh"

480p • 16fps • 5s

### "a zebra flicking its tail in warm savanna light; slow pan across the scene; golden-hour warmth, ultra-realistic, 4K; light film"

480p • 16fps • 5s

### "aerial shot flying low over rolling sand dunes patterned by the wind."

480p • 16fps • 5s

### "an ostrich scanning an open plain; slow gimbal push-in; overcast soft light; ultra-realistic, 4K."

480p • 16fps • 5s

### "carbonation rising in a glass of seltzer; shallow parallax orbit at chest height; tiny focus breathing during rack focus; golden"

480p • 16fps • 5s

### "cherry blossoms falling along a riverside path; locked-off shot with gentle world motion; natural lighting, ultra-realistic, 4K;"

480p • 16fps • 5s

### "close-up shot of a wind chime gently moving and ringing in a light breeze."

480p • 16fps • 5s

### "drone shot flying low over a lavender field with rows converging to the horizon."

480p • 16fps • 5s

### " forward dolly shot through a narrow alley full of hanging lanterns and street food stalls."

480p • 16fps • 5s

### "lavender swaying with bees passing through; gentle push-in from a stable tripod; overcast soft light, ultra-realistic, 4K; soft"

480p • 16fps • 5s

### " macro shot of a ladybug crawling along the edge of a green leaf."

480p • 16fps • 5s

### " macro shot of ink swirling and mixing in a glass of water against a white background."

480p • 16fps • 5s

### " macro shot of raindrops rippling on a calm pond with concentric circles overlapping."

480p • 16fps • 5s

### "paper lanterns bobbing in a night festival; over-the-shoulder follow maintaining subject center; soft depth of field and creamy"

480p • 16fps • 5s

### " shot of a drone circling a small island surrounded by clear blue water."

480p • 16fps • 5s

### " shot of a drone flying over a patch of colorful autumn forest."

480p • 16fps • 5s

### " shot of a snow globe being shaken, flakes swirling around a tiny village."

480p • 16fps • 5s

### "steam rising from a cup of tea by a window; locked-off shot; soft morning light, ultra-realistic, 4K. 2"

480p • 16fps • 5s

### " timelapse of stars streaking across the night sky above a desert landscape."

480p • 16fps • 5s

### " underwater shot of koi fish gliding past colorful pebbles in a clear pond."

480p • 16fps • 5s

### " wide shot of waves crashing dramatically against black volcanic rocks at the coast."

480p • 16fps • 5s

### "wisteria clusters swinging under a pergola; locked-off shot with gentle world motion; natural lighting, ultra-realistic, 4K; lig"

480p • 16fps • 5s

## Image-to-Video Generation

Generate videos from input images while maintaining temporal consistency. Due to the autoregressive nature of our model, we don't need to change the architecture at all—one model handles all tasks seamlessly.

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

Input Image

Generated Video

480p • 16fps • 5s

## Video-to-Video Generation

Our model can extend and transform existing videos while maintaining temporal consistency. Due to the autoregressive nature of our model, we don't need to change the architecture at all—one model handles all tasks seamlessly.

### Add_hand

384p • 16fps • 2s

### Add_horse

384p • 16fps • 2s

### Convert_orange_into_lemon

384p • 16fps • 2s

### Turn_blackberries_into_red_currant

384p • 16fps • 2s

### Detect

384p • 16fps • 2s

### Detect_book

384p • 16fps • 2s

### Detect_depth

384p • 16fps • 2s

### Detect_hand

384p • 16fps • 2s

### Detect_magnolia_tree

384p • 16fps • 2s

### Inpaint

384p • 16fps • 2s

### Inpaint

384p • 16fps • 2s

### Inpaint

384p • 16fps • 2s

### Make_flowers_Electric_Blue

384p • 16fps • 2s

### Make_it_abstract_Bauhaus_style

384p • 16fps • 2s

### Make_it_concept_art_style

384p • 16fps • 2s

### Make_it_doodle_style

384p • 16fps • 2s

### Make_it_gothic_gloomy

384p • 16fps • 2s

### Make_it_traditional_Chinese_ink_painting_style

384p • 16fps • 2s

### Make_the_beach_golden_sandy

384p • 16fps • 2s

### Make_the_jellyfish_maroon_color

384p • 16fps • 2s

### Make_the_train_metallic_silver_and_rusty

384p • 16fps • 2s

### Make_the_vase_golden

384p • 16fps • 2s

### Outpaint

384p • 16fps • 2s

### Outpaint.

384p • 16fps • 2s

### Outpaint.

384p • 16fps • 2s

### Outpaint.

384p • 16fps • 2s

### Outpaint.

384p • 16fps • 2s

## Long Video Generation

Extended video generation (10s, 15s, 30s) using autoregressive segment-by-segment generation. The tail of each 5s segment is re-encoded as the prefix for the next segment, leveraging the invertibility of normalizing flows.

### "a black ink drop blooming through clear water in a tumbler; static macro with minimal parallax; tendrils feathering out in slow"

480p • 16fps • 10s

### "a corgi dog wearing a tie sat by a window"

480p • 16fps • 10s

### "a corgi dozing in a sunbeam on hardwood floor; slow dolly-in at ankle height; dust motes drifting in the light shaft, shallow de"

480p • 16fps • 10s

### "a corgi sticking its head out of a car window; tracking from mirror level, horizon bob from suspension; fur whipping in the wind"

480p • 16fps • 10s

### "a dim street lit only by vending machines; slow dolly-forward at waist height; saturated glow halos, tiny insects swarming in li"

480p • 16fps • 10s

### "a street waffle being dusted with powdered sugar; tight close-up from plate level; sugar creating tiny puffs on impact, some gra"

480p • 16fps • 10s

### "fall leaves spiraling down in a courtyard; upward-looking locked-off shot; branches framing sky, occasional leaf grazing lens; l"

480p • 16fps • 10s

### "school of koi swirling just below pond surface; top-down gimbal drift; occasional surface glare flare, ripples distorting bodies"

480p • 16fps • 10s

### "subway doors closing on a busy platform; low-angle from floor level; rolling shutter wobble as train accelerates, reflections sl"

480p • 16fps • 10s

### "zoom-in corgi face"

480p • 16fps • 13s

### "a corgi dog sits in front of a blackboard teaching"

480p • 16fps • 15s

### "a corgi dog wearing a tie sitting in front of a blackboard"

480p • 16fps • 15s

### "a golden doodle tilting its head at a squeaky toy"

480p • 16fps • 30s

### "paper lanterns bobbing in a night festival; over-the-shoulder follow maintaining subject center; soft depth of field and creamy"

480p • 16fps • 30s

### "POV from the boat deck looking at a corgi wearing neon-pink sunglasses; wind noise feel, slight horizon bob, water droplets on l"

480p • 16fps • 30s

### "This close-up shot of a Victoria crowned pigeon"

480p • 16fps • 30s

## Method Comparisons

Side-by-side comparisons with baseline Autoregressive diffusion models. All prompts are sampled from VBench (Huang, 2023). Each video shows three methods from left to right: NOVA (https://github.com/baaivision/NOVA), WAN-Causal (finetuned from WAN provided by https://huggingface.co/gdhe17/Self-Forcing/blob/main/checkpoints/ode_init.pt), and STARFlow-V (Ours).

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "A panda drinking coffee in a cafe in Paris, in cyberpunk style"

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "A person is playing piano"

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "A person is tasting beer"

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "a backpack and an umbrella"

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "A 3D model of a 1800s victorian house."

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "A corgi's head depicted as an explosion of a nebula"

480p • 16fps • 4s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "A cute happy Corgi playing in park, sunset"

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "A shark swimming in clear Caribbean ocean"

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "a bird"

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "a drone flying over a snowy forest."

480p • 16fps • 6s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "arch"

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "cliff"

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "a person drinking coffee in a cafe"

480p • 16fps • 5s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "In a still frame, a stop sign"

480p • 16fps • 7s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "A boat sailing leisurely along the Seine River with the Eiffel Tower in background, in super slow motion"

480p • 16fps • 3s

NOVA
(top) WAN-Causal
(mid) STARFlow-V
(bot)

### "The bund Shanghai, zoom in"

480p • 16fps • 7s

## Failure Cases

Examples where our model struggles or produces suboptimal results, particularly on complex motion and physical interactions. These limitations stem from: (1) insufficient training due to resource constraints, (2) low-quality training data, and (3) the absence of post-training refinement—we perform only pretraining without supervised fine-tuning (SFT) or reinforcement learning (RL).

### "a dog shaking off water on a dock; handheld with minimal sway; blue-hour ambience, ultra-realistic, 4K; light film grain."

480p • 16fps • 5s

### "a goat kid hopping onto a small boulder then back down; handheld with minimal sway; blue-hour ambience, ultra-realistic, 4K; nat"

480p • 16fps • 5s

### ""A green powder is being poured into a test tube"

480p • 16fps • 5s

### "a hamster running steadily in a clear exercise wheel; handheld with minimal sway; golden-hour warmth, ultra-realistic, 4K; light"

480p • 16fps • 5s

### "a skateboarder kickflipping off a curb; shallow parallax orbit at chest height; slight chromatic aberration at highlights; blue-"

480p • 16fps • 5s

### "a small octopus exploring a jar with one curious arm; gentle push-in from a stable tripod; golden-hour warmth, ultra-realistic,"

480p • 16fps • 5s

### "a trail runner cresting a ridge at dawn; over-the-shoulder follow maintaining subject center; tiny focus breathing during rack f"

480p • 16fps • 5s

### "fresh bread being sliced on a wooden board; close-up; kitchen window light, ultra-realistic, 4K."

480p • 16fps • 5s