Flowing Fidelity to Detail for Efficient High-Resolution Video Generation
This work presents FlashVideo, a practical tool with which users can easily personalize their own photos on the fly by providing one or a few reference face images and a text prompt. Our approach is distinguishable from DiT diffusion models have achieved great success in text-to-video generation, leveraging their scalability in model capacity and data scale. High content and motion fidelity aligned with text prompts, however, often require large model parameters and a substantial number of function evaluations (NFEs). Realistic and visually appealing details are typically reflected in high-resolution outputs, further amplifying computational demands—especially for single-stage DiT models. To address these challenges, we propose a novel two-stage framework, FlashVideo, which strategically allocates model capacity and NFEs across stages to balance generation fidelity and quality. In the first stage, fidelity is prioritized through a low-resolution process utilizing large parameters and sufficient NFEs to enhance computational efficiency. The second stage establishes flow matching between low and high resolutions, effectively generating fine details with minimal NFEs. Quantitative and visual results demonstrate that FlashVideo achieves state-of-the-art high-resolution video generation with superior computational efficiency.
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Fluffy llama with round glasses in a cozy cafe with warm lighting, working on laptop, amidst large-eyed expressions.
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Giant woolly mammoths roam a snowy meadow with snow-covered trees and mountains, bathed in warm mid-afternoon light, captured at a low angle.
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Drone captures historic church, people, and tiered pathways on Amalfi Coast with intricate architecture, hilly landscapes and stunning ocean vistas under afternoon glow.
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Stylish woman in chic attire casually walks on vibrant, neon-lit Tokyo street, its glistening dampness reflects city's colorful lights and pedestrians.
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A sleek cat with bright eyes peers curiously from a cozy spot, attentively scanning surroundings, captured in warm lighting from a side angle, highlighting its inquisitive expression
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An extreme close-up captures a thoughtful, well-dressed elder man's subtle revelation at a Parisian café, with warm cinematic lighting and softly blurred Paris streets enhancing the scene's depth.
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A quaint village in a serene valley with cherry blossoms, villagers in traditional attire engage in daily activities, captured dynamically.
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A vibrant tabby cat dashes through a lush garden, its gleaming eyes alight with excitement. Captured from a ground-level angle under warm cinematic tones.
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A striking figure rides a massive tortoise through a sunlit desert of glass sand, captured in a wide-to-close shot emphasizing their determination and the landscape's glistening beauty.
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Young woman in teal dress walks gracefully in green forest with vibrant foliage, sunlight filtering through leaves, among blooming wildflowers.
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Vincent van Gogh, with red hair and intense gaze, in a sunlit, paint-splattered room, amidst canvases, vibrant paints, and a sunflower canvas.
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Man in Santa hat and red scarf smiles, conversing with tiger before laptop, against richly-textured brick fireplace backdrop, camera smoothly glides.
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Majestic giraffe in vast Savannah, reaching for lush acacia leaves, captured with camera panning over golden grass and sand-colored coat.
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Low-angle view of a confident lion with golden mane on a rocky outcrop, under warm sky glow, captured with a subtle camera pan.
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Beautiful princess in flowing gown on majestic horse by a gently flowing river, camera captures her serene expression and poised demeanor.
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Charming, chubby red panda with soft fur, sniffing and nibbling pizza with dexterous paws on a wooden platform amidst lush foliage.
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A bejeweled crab elegantly strolls along the beach, dropping gems and jewels intermittently, its trail captured against the contrasting, sandy backdrop.
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A sparkling waterfall cascades into a clear pool within a vibrant, tranquil forest clearing, enhanced by colorful flora and small birds, captured in a gentle camera sweep.
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An adorable kitten in a pirate costume confidently rides a robot vacuum around the house, its curious expression and mischievous antics warmly illuminated.
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A serene lakeside cabin and classic wooden rowboat sit peacefully amongst greenery, with the camera capturing their gentle interaction with the tranquil water.
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A relaxed cow, wearing sunglasses and a hat, lounges beneath a palm tree on a beach.
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A delightfully armored hedgehog rides a toy horse in a medieval castle.
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A camera glide reveals an ancient, intricately-carved fountain nestled in a vibrant garden, its soft cascades whispering secrets amidst sunlight-dappled flora.
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A first-person journey through frost-lined Manhattan streets elegantly reveals a frost-encased Empire State Building, embodying the haunting, wintry beauty of the city.
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A fluffy llama engagingly reads a picture book in a cozy nook surrounded by pillows and soft lighting.
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A sweeping aerial shot of a steam train traversing Scotland's Glenfinnan Viaduct, surrounded by lush landscapes and rugged mountains, with tracking camera enhances its majestic beauty.
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An intellectual-looking rabbit, with glasses and a newspaper, sits on a quaint chair, highlighting its engrossed, attentive reading posture.
@article{zhang2025flashvideo,
title={FlashVideo:Flowing Fidelity to Detail for Efficient High-Resolution Video Generation},
author={Zhang, Shilong and Li, Wenbo and Chen, Shoufa and Ge, Chongjian and Sun, Peize and Zhang, Yida and Jiang, Yi and Yuan, Zehuan and Binyue, Peng and Luo, Ping},
journal={arXiv preprint arXiv:2502.05179},
year={2025}
}
Acknowledgements: We thank DreamBooth for providing the page templates.