How to Use the seedance-2.0-fast/image-to-video-spicy API: image to video integration guide (2026)

seedance-2.0-fast/image-to-video-spicy is an image to video model by Doubao: Seedance 2.0 Fast Spicy Image to Video is a fast AI image-to-video generation model that creates high-quality cinematic clips from images at faster speed and lower cost, optimized for scalable content generation with smooth animations and stable aesthetics. Ready-to-use REST inference API for animating images, social media clips, product videos, advertising creatives, visual storytelling, and professional image-to-video workflows with simple integration, no coldstarts, and affordable pricing. On NamiFusion you can try it in the playground (exact quote shown before you submit), then call it through one unified REST API — about $1.00 per typical run.

TL;DR

· Task type: image to video, provided by Doubao

· Pricing: about $1.00 per typical run ($1 = 100 credits), pay-as-you-go

· Getting started: playground (exact quote before submit) → create an API key → one POST request

· Tunable parameters: 8 (see the table below)

· No platform watermark; commercial use allowed (per the Terms of Service)

What can you build with seedance-2.0-fast/image-to-video-spicy?

Short-form video and ad clips: go from a prompt or a single image to publishable motion content.

Product demos and concept previews: validate storyboards and visual direction cheaply before any shoot.

A social content factory: batch vertical clips and ride trending topics fast.

Remixing existing assets: image-to-video brings static work to life and extends its lifespan.

How do you call this API?

1. Sign up on NamiFusion and create a key on the API Keys page (signup bonus credits can only be used on selected models).
2. Submit a task with the cURL example below, passing your key as a Bearer token.
3. Poll the task status with the returned task_uuid and read the output URLs when completed.

# 1) Submit — returns { "task_uuid": "..." }
curl -X POST "https://www.namifusion.com/api/v1/marketplace/run/doubao/seedance-2.0-fast/image-to-video-spicy" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": {
    "first_frame": [
      "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/09/12/136eb3aa5003.jpeg"
    ],
    "prompt": "Create a cinematic luxury product video from the input image. The camera slowly pushes in while soft light glides across the glass surface, revealing reflections and subtle highlights. Add gentle floating mist and elegant sparkling particles in the background. Keep the bottle stable and realistic, with smooth motion, premium mood, polished commercial aesthetics, and refined high-end advertising style.",
    "last_frame": [
      "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/09/12/9a57eed5af5d.jpeg"
    ],
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5,
    "generate_audio": true,
    "seed": -1
  }
}'

# 2) Poll until status is "completed", then read the output URLs
curl "https://www.namifusion.com/api/v1/marketplace/run/tasks/TASK_UUID" \
  -H "Authorization: Bearer YOUR_API_KEY"

What parameters does it take?

first_frame (Image): required

prompt (Prompt): optional

last_frame (Last Frame): optional

aspect_ratio (Aspect Ratio): optional

resolution (Resolution): optional, default "720p"

duration (Duration): optional, default 5

generate_audio (Generate Audio): optional, default true

seed (Seed): optional

How do you write prompts for seedance-2.0-fast/image-to-video-spicy?

1. Subject first: lead with the actor and action, then add environment, lighting and style ("an astronaut sprinting through a neon street in the rain, cinematic, shallow depth of field").
2. Concrete nouns beat stacked adjectives: "85mm portrait lens, golden-hour backlight" works far better than "very beautiful, ultra high quality".
3. Change one variable per iteration: pin the seed to reproduce a result, tweak a single phrase at a time so you know what actually moved the output.
4. State negatives positively: instead of "no blur", ask for "sharp focus, crisp details".

How much does it cost?

Pay-per-use in credits. About $1.00 per typical run ($1 = 100 credits); the exact price varies with parameters like resolution or duration, and the playground shows the exact quote before you submit.