Bytedance/Seedance 1.5 Pro

seedance-1-5-pro

Seedance 1.5 Pro First Frame, Last FrameLLMs.txt

Endpoint:

Generate cinematic **videos** with native **audio-visual sync**, multilingual lip-sync, skeletal tracking & 4K upscaling using dual-branch Diffusion Transformer; up to 25s at 1080p.[1][2][3]

API Playground API Documentation

API Endpoint URL

Base URL for all API requests to this endpoint.

https://modelslab.com/api/v7/video-fusion/image-to-video

API Authentication

Authentication requires a valid API key included in the request. Generate and manage your API keys from your developer dashboard. Include the key in the key parameter for all API requests.

Integration Examples

Production-ready code samples for API integration

{
  "init_image": [
    "https://assets.modelslab.com/generations/ee86fb7e-3da0-4535-b16f-5268a795bbf2.jpg",
    "https://assets.modelslab.com/generations/7e39b774-8643-44c7-8cf5-35f4a861703e.jpg"
  ],
  "prompt": "looking at the camera, the camera takes 360 and come back to girl",
  "model_id": "seedance-1-5-pro",
  "key": "YOUR_API_KEY"
}

SDKs

Official SDKs

Production-ready SDKs and client libraries for all major programming languages

JavaScript

Python

PHP

API Parameters

Technical specifications for API request parameters.

Field Name	Parameter	Technical Description
First & Last frame image	`init_image`	Add the first image as the start frame and second image as the last frame of the image
Prompt	`prompt`	Enter prompt for image to video
Model id	`model_id`	Model