Introducing Decart Lucy Image-to-Video on WaveSpeedAI

Bringing Still Images to Life with Lucy Image-to-Video

Every photograph holds a story waiting to unfold. A wind-swept landscape, a poised portrait, a carefully styled product shot — each one frozen at a single moment in time. What if you could press play and watch that moment come alive? That’s exactly what Lucy Image-to-Video by Decart delivers, and it’s now available on WaveSpeedAI.

Decart — the AI lab behind some of the fastest real-time generative video systems ever built — has brought its speed-first philosophy to image-to-video generation. Lucy Image-to-Video transforms any still image into a smooth, cinematic 5-second video clip using nothing more than a reference image and a text prompt describing the motion you want to see.

What Is Lucy Image-to-Video?

Lucy Image-to-Video is part of Decart’s Lucy model family, which has earned a reputation for pushing the boundaries of video generation speed. Built on a Diffusion Transformer (DiT) architecture and optimized at the hardware level for maximum throughput, Lucy was engineered from the ground up to generate video fast — without sacrificing visual quality.

The image-to-video variant takes a straightforward approach: upload an image, describe the motion you want, and Lucy generates a fluid 5-second video that faithfully preserves the style, composition, and fine details of your source image. There are no depth maps to configure, no 3D meshes to wrangle, and no complex multi-step pipelines. The motion you see — whether it’s hair blowing in the wind, waves crashing on a shore, or a product rotating on a turntable — emerges from learned visual dynamics, producing natural and physically plausible results.

Decart, valued at $3.1 billion following their August 2025 funding round, has built their entire stack around speed. The Lucy 5B model can generate a full 5-second video in under 5 seconds, achieving greater-than-real-time performance end-to-end. That same commitment to lightning-fast inference is what makes this model a natural fit for WaveSpeedAI’s platform.

Key Features

High-Fidelity Image Preservation: Lucy maintains the fine details, color palette, artistic style, and spatial composition of your source image throughout the generated video. What you put in is what you get back — just with motion added.
Natural, Physically Plausible Motion: Rather than relying on engineered geometry or explicit physics engines, Lucy generates motion through learned visual dynamics. The result is smooth, realistic movement that looks like it belongs in the scene.
Simple Two-Input Workflow: No complicated parameter tuning or multi-step setup. Provide an image and a text prompt, and you’re done. This makes Lucy accessible to creators at any skill level.
Built-In Prompt Enhancer: Not sure how to describe the motion you’re imagining? Lucy includes a prompt enhancement tool that automatically refines your description for better results.
Consistent 5-Second Output: Every generation produces a fixed 5-second clip, giving you predictable, reliable output for any workflow.
Commercial-Use License: Lucy Image-to-Video comes with a commercial license, so you can use the generated videos in professional projects, marketing campaigns, and client work without restrictions.

Real-World Use Cases

The 5-second format is tailor-made for social media. Transform a static product photo into an eye-catching animated post, or turn a travel snapshot into a mesmerizing looping video. In a feed full of still images, motion stops the scroll.

E-Commerce and Product Marketing

Bring product images to life without the cost and logistics of a video shoot. Animate a fashion lookbook, show a gadget from multiple angles with subtle camera movement, or add environmental effects like falling confetti around a new product launch. At $0.40 per video, generating dozens of product animations is a fraction of the cost of traditional video production.

Storytelling and Illustration

Artists and illustrators can add a cinematic dimension to their work. Describe the wind rustling through a painted forest, rain falling on a watercolor cityscape, or a character turning to face the viewer. Lucy preserves the artistic style of the original image while adding life to the scene.

Presentations and Pitch Decks

Replace static slides with dynamic visuals. An animated hero image on your opening slide, a product concept that rotates and shimmers, or a data visualization that comes alive — these small touches elevate any presentation from flat to memorable.

Personal and Creative Projects

Turn family photos into living memories, animate pet portraits, or create atmospheric loops from your favorite photographs. Lucy’s simple workflow means you don’t need video editing experience to create something compelling.

Getting Started on WaveSpeedAI

Using Lucy Image-to-Video on WaveSpeedAI is straightforward. You can start generating videos through the web interface or integrate it directly into your applications via the API.

Using the API

import wavespeed

output = wavespeed.run(
    "decart/lucy-image-to-video",
    {
        "prompt": "Camera slowly pushes in as gentle wind moves the subject's hair, soft bokeh lights shimmer in the background",
        "image": "https://your-image-url.com/photo.jpg",
    },
)

print(output["outputs"][0])  # Video URL

Tips for Best Results

Be specific with your prompts — Instead of “make it move,” describe exactly what should happen: “waves gently lap at the shoreline as seagulls fly across the sky from left to right.”
Include camera direction — Prompts like “camera slowly pans right” or “gentle zoom in” give Lucy clear instructions for cinematic movement.
Use high-quality source images — Sharper, well-lit images produce cleaner, more detailed animations.
Describe physically plausible motion — Lucy excels at natural movement. Keep your prompts grounded in real-world physics for the most realistic output.
Try the Prompt Enhancer — If you’re not getting the results you want, let Lucy’s built-in enhancer refine your description automatically.

Why WaveSpeedAI?

Running Lucy Image-to-Video on WaveSpeedAI means you get the fastest possible inference with zero cold starts — your request begins processing immediately, every time. Combined with WaveSpeedAI’s affordable pricing at $0.40 per video, you can generate content at scale without burning through your budget. Whether you’re a solo creator experimenting with a handful of clips or a production team generating hundreds of product animations, the platform scales with you.

Start Creating

Still images are just the beginning. With Lucy Image-to-Video on WaveSpeedAI, every photograph becomes a potential video — and the only limit is what you can describe.

Try Lucy Image-to-Video now on WaveSpeedAI and start transforming your images into cinematic motion today.