---
description: ByteDance's next-generation video model with a unified multimodal architecture. Generates high-quality video with synchronized audio from text, images, video clips, and audio inputs. Supports multimodal references (up to 9 images, 3 videos, 3 audio files), native audio generation, video editing, video extension, intelligent duration, and adaptive aspect ratio.
title: Seedance 2.0
image: https://developers.cloudflare.com/og-docs.png
---

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# Seedance 2.0

Text-to-Video • ByteDance

Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/ai/models/bytedance/seedance-2.0/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

`bytedance/seedance-2.0`

* Third-party

ByteDance's next-generation video model with a unified multimodal architecture. Generates high-quality video with synchronized audio from text, images, video clips, and audio inputs. Supports multimodal references (up to 9 images, 3 videos, 3 audio files), native audio generation, video editing, video extension, intelligent duration, and adaptive aspect ratio.

| Model Info       |                                                                                                                          |
| ---------------- | ------------------------------------------------------------------------------------------------------------------------ |
| More information | [link ↗](https://seed.bytedance.com/en/seedance2%5F0)                                                                    |
| Pricing          | [View pricing in the Cloudflare dashboard ↗](https://dash.cloudflare.com/?to=/:account/ai/models/bytedance/seedance-2.0) |

## Usage

```ts
const response = await env.AI.run(
  'bytedance/seedance-2.0',
  {
    prompt: 'A golden retriever running through a field of sunflowers on a sunny day',
    aspect_ratio: '16:9',
    duration: 5,
    resolution: '720p',
  },
)
console.log(response)
```

```bash
curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "bytedance/seedance-2.0",
  "input": {
    "prompt": "A golden retriever running through a field of sunflowers on a sunny day",
    "aspect_ratio": "16:9",
    "duration": 5,
    "resolution": "720p"
  }
}'
```

```json
{
  "state": "Completed",
  "result": {
    "video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0/simple-video.mp4"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}
```

## Examples

**High Resolution Cinematic** — Cinematic video in 1080p

```ts
const response = await env.AI.run(
  'bytedance/seedance-2.0',
  {
    prompt:
      'A dramatic drone shot flying through misty mountain peaks at sunrise, cinematic lighting with volumetric fog',
    aspect_ratio: '16:9',
    duration: 10,
    resolution: '1080p',
  },
)
console.log(response)
```

```bash
curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "bytedance/seedance-2.0",
  "input": {
    "prompt": "A dramatic drone shot flying through misty mountain peaks at sunrise, cinematic lighting with volumetric fog",
    "aspect_ratio": "16:9",
    "duration": 10,
    "resolution": "1080p"
  }
}'
```

```json
{
  "state": "Completed",
  "result": {
    "video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0/high-resolution-cinematic.mp4"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}
```

**Image to Video** — Generate video from a reference image

```ts
const response = await env.AI.run(
  'bytedance/seedance-2.0',
  {
    image:
      'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAnklEQVR42u2XQRLAIAgD8/839i/26qFCACm0ozPe1KwcQsAoXvgcAABxpwFowl4QWITHxW0LCBhxVngF4gKIirMQyBRnIJAtrkE8AuwWnyFEgKzfS1UA+3sWTju3BGAu7gKYIfBW+Q/AAQgBeMCkt1wVsLZjcwUYG2Z9wGLHZitWk1DEisubUYt2XB5IWkSyFqG0RSxvMZi0Gc1+Ox3fm00ZJ5mGVtkAAAAASUVORK5CYII=',
    prompt: 'The character begins walking forward through the scene',
    aspect_ratio: '16:9',
    duration: 5,
    resolution: '720p',
  },
)
console.log(response)
```

```bash
curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "bytedance/seedance-2.0",
  "input": {
    "image": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAnklEQVR42u2XQRLAIAgD8/839i/26qFCACm0ozPe1KwcQsAoXvgcAABxpwFowl4QWITHxW0LCBhxVngF4gKIirMQyBRnIJAtrkE8AuwWnyFEgKzfS1UA+3sWTju3BGAu7gKYIfBW+Q/AAQgBeMCkt1wVsLZjcwUYG2Z9wGLHZitWk1DEisubUYt2XB5IWkSyFqG0RSxvMZi0Gc1+Ox3fm00ZJ5mGVtkAAAAASUVORK5CYII=",
    "prompt": "The character begins walking forward through the scene",
    "aspect_ratio": "16:9",
    "duration": 5,
    "resolution": "720p"
  }
}'
```

```json
{
  "state": "Completed",
  "result": {
    "video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0/image-to-video.mp4"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}
```

**Portrait Video** — Vertical video for social media

```ts
const response = await env.AI.run(
  'bytedance/seedance-2.0',
  {
    prompt: 'Abstract ink drops spreading through water, vivid colors mixing in slow motion',
    aspect_ratio: '9:16',
    duration: 5,
    resolution: '720p',
  },
)
console.log(response)
```

```bash
curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "bytedance/seedance-2.0",
  "input": {
    "prompt": "Abstract ink drops spreading through water, vivid colors mixing in slow motion",
    "aspect_ratio": "9:16",
    "duration": 5,
    "resolution": "720p"
  }
}'
```

```json
{
  "state": "Completed",
  "result": {
    "video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0/portrait-video.mp4"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}
```

**4K Cinematic Video** — Generate a detailed cinematic video in 4K

```ts
const response = await env.AI.run(
  'bytedance/seedance-2.0',
  {
    prompt:
      'A sweeping cinematic shot of a futuristic city skyline at dusk, flying past glass towers with neon reflections and dramatic clouds',
    aspect_ratio: '16:9',
    duration: 5,
    resolution: '4k',
  },
)
console.log(response)
```

```bash
curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "bytedance/seedance-2.0",
  "input": {
    "prompt": "A sweeping cinematic shot of a futuristic city skyline at dusk, flying past glass towers with neon reflections and dramatic clouds",
    "aspect_ratio": "16:9",
    "duration": 5,
    "resolution": "4k"
  }
}'
```

```json
{
  "state": "Completed",
  "result": {
    "video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0/4k-cinematic-video.mp4"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}
```

**Virtual Avatar Reference** — Use a virtual character avatar from the trusted asset library

```ts
const response = await env.AI.run(
  'bytedance/seedance-2.0',
  {
    image: 'https://ark-doc.tos-ap-southeast-1.bytepluses.com/doc_image/r2v_tea_pic1.jpg',
    prompt: 'The scene gently animates with subtle motion',
    aspect_ratio: '16:9',
    duration: 5,
    resolution: '720p',
    use_virtual_avatar: true,
  },
)
console.log(response)
```

```bash
curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "bytedance/seedance-2.0",
  "input": {
    "image": "https://ark-doc.tos-ap-southeast-1.bytepluses.com/doc_image/r2v_tea_pic1.jpg",
    "prompt": "The scene gently animates with subtle motion",
    "aspect_ratio": "16:9",
    "duration": 5,
    "resolution": "720p",
    "use_virtual_avatar": true
  }
}'
```

```json
{
  "state": "Completed",
  "result": {
    "video": "https://examples.aig.cloudflare.com/bytedance/seedance-2.0/virtual-avatar-reference.mp4"
  },
  "gatewayMetadata": {
    "keySource": "Unified"
  }
}
```

## Parameters

prompt

`string`requiredmaxLength: 2000Text prompt describing the video to generate

image

`string`Reference image (HTTP(S) URL or base64 data URI) for image-to-video

reference\_video

`string`Reference video (HTTP(S) URL or base64 data URI) for style/motion guidance

last\_frame\_image

`string`Reference image (HTTP(S) URL or base64 data URI) for last-frame guidance. Only works if an image start frame is also given.

▶reference\_images\[\]

`array`maxItems: 4Reference images (1-4, HTTP(S) URLs or base64 data URIs) to guide video generation for characters, avatars, clothing, or environments. Cannot be used with 1080p resolution or first/last frame images.

duration

`integer`requireddefault: 5minimum: 4maximum: 12Video duration in seconds

resolution

`string`requireddefault: 720penum: 480p, 720p, 1080p, 4kVideo resolution

aspect\_ratio

`string`requireddefault: 16:9enum: 16:9, 4:3, 1:1, 3:4, 9:16, 21:9, 9:21Video aspect ratio. Ignored if an image is used.

fps

`number`requireddefault: 24const: 24Frame rate (frames per second)

camera\_fixed

`boolean`requireddefault: falseWhether to fix camera position

generate\_audio

`boolean`Whether to generate audio with the video

watermark

`boolean`requireddefault: falseWhether to add a watermark to the output video

seed

`integer`minimum: \-9007199254740991maximum: 9007199254740991Random seed for reproducible generation

use\_virtual\_avatar

`boolean`requireddefault: falseRoute image reference inputs (image, reference\_images, last\_frame\_image) through ByteDance's trusted virtual avatar asset library before generation. Intended for AI-generated/virtual character avatars that would otherwise be blocked by face or deepfake detection

video

`string`format: uriURL to the generated video

## API Schemas (Raw)

Input

Output

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