Seedance 1 Pro

High-quality video generation from ByteDance supporting text-to-video and image-to-video.

Property	Value
Model ID	`bytedance/seedance-1-pro`
Provider	Replicate
Type	Video generation

Basic Usage

import { compose, generateVideo, videoModel } from "@synthome/sdk";

const execution = await compose(
  generateVideo({
    model: videoModel("bytedance/seedance-1-pro", "replicate"),
    prompt: "A majestic eagle soaring over mountain peaks at sunrise",
  }),
).execute();

Text-to-Video

Generate video from a text prompt:

generateVideo({
  model: videoModel("bytedance/seedance-1-pro", "replicate"),
  prompt: "Ocean waves crashing on a rocky shore, cinematic lighting",
  resolution: "1080p",
  aspectRatio: "16:9",
});

Image-to-Video

Animate a starting image:

generateVideo({
  model: videoModel("bytedance/seedance-1-pro", "replicate"),
  prompt: "The woman turns and smiles at the camera",
  image: "https://example.com/portrait.jpg",
});

Options

Option	Type	Default	Description
`prompt`	`string`	required	Text description of the video
`image`	`string`	-	Starting image URL for image-to-video
`resolution`	`"480p" \| "720p" \| "1080p"`	-	Output resolution
`aspectRatio`	`string`	-	Aspect ratio (16:9, 9:16, 1:1, etc.)
`duration`	`number`	-	Video duration in seconds
`seed`	`number`	-	Random seed for reproducibility
`cameraFixed`	`boolean`	-	Lock camera movement
`lastFrameImage`	`string`	-	Target end frame image URL

Aspect Ratios

Supported aspect ratios:

16:9 - Landscape (YouTube, desktop)
9:16 - Portrait (TikTok, Reels, Shorts)
4:3 - Classic TV
3:4 - Portrait classic
1:1 - Square (Instagram)
21:9 - Ultrawide
9:21 - Ultra-tall

generateVideo({
  model: videoModel("bytedance/seedance-1-pro", "replicate"),
  prompt: "Vertical video of a waterfall",
  aspectRatio: "9:16",
});

Resolutions

Resolution	Dimensions	Use Case
`480p`	854x480	Preview, fast generation
`720p`	1280x720	Standard quality
`1080p`	1920x1080	High quality

Examples

Cinematic Scene

generateVideo({
  model: videoModel("bytedance/seedance-1-pro", "replicate"),
  prompt: "Drone shot flying through a misty forest at dawn, cinematic",
  resolution: "1080p",
  aspectRatio: "21:9",
});

Product Animation

generateVideo({
  model: videoModel("bytedance/seedance-1-pro", "replicate"),
  prompt: "Product rotating on a white pedestal, studio lighting",
  image: "https://example.com/product.png",
  aspectRatio: "1:1",
});

generateVideo({
  model: videoModel("bytedance/seedance-1-pro", "replicate"),
  prompt: "Person walking through a busy city street",
  aspectRatio: "9:16",
  resolution: "1080p",
});

Seedance 1 Pro

On this page