Seedance 2.0 Fast Image to Video API Documentation

Generate video content using the seedance-2.0-fast-image-to-video model

Overview

This document describes how to use the seedance-2.0-fast-image-to-video model for fast image-to-video generation.

Authentication

All API requests require a Bearer Token in the request header:

Authorization: Bearer YOUR_API_KEY

Get API Key:

1. Open the API Keys page
2. Click Create API Key

1. Create Generation Task

Request Parameters

input Object Parameters

• prompt (string, required): describes how the source image should animate
• image_urls (string[], required): at least one source image URL
• aspect_ratio / ratio (string, optional): output video ratio
• resolution (string, optional): 480p, 720p, 1080p
• duration (number, optional): output duration in seconds
• generate_audio (boolean, optional): whether to generate audio
• web_search (boolean, optional): whether to enable web search
• nsfw_checker (boolean, optional): defaults to false; when false, platform-side content filtering is disabled and the model result is returned directly

Credit Consumption

The current public credit rule for seedance-2.0-fast-image-to-video is:

Request Example

{
  "model": "seedance-2.0-fast-image-to-video",
  "input": {
    "prompt": "Animate the portrait with subtle hair motion and a slow cinematic push-in",
    "image_urls": ["https://cdn.example.com/input.png"],
    "resolution": "720p",
    "duration": 5,
    "nsfw_checker": false
  }
}

Notes

• The first source image is used as the primary reference frame
• Fast variants are priced separately from the standard Seedance 2.0 variants