# Seedance 2.0 Text to Video

> Seedance 2.0 generates high-quality videos from text prompts with synchronized audio including sound effects, ambient sounds, and lip-synced speech.

## Overview

- **Endpoint**: `https://api.runflow.io/v1/run/bytedance/seedance/2.0/text-to-video`
- **Model ID**: `bytedance/seedance/2.0/text-to-video`
- **Provider**: ByteDance
- **License**: commercial
- **Last Updated**: 2026-04-08

## Pricing

- **Base price**: $0.1/second
- **Note**: Per second of video
## Input Schema

### `prompt` (string, required)

The text prompt used to generate the video

### `aspect_ratio` (string, optional)

The aspect ratio of the generated video. Use 16:9 for landscape, 9:16 for portrait/vertical, 1:1 for square, 21:9 for ultrawide cinematic, or auto to let the model decide.
- **Default**: `auto`
- **Options**: `auto`, `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16`

### `duration` (string, optional)

Duration of the video in seconds. Supports 4 to 15 seconds, or auto to let the model decide based on the prompt.
- **Default**: `auto`
- **Options**: `auto`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15`

### `resolution` (string, optional)

Video resolution - 480p for faster generation, 720p for balance.
- **Default**: `720p`
- **Options**: `480p`, `720p`

### `generate_audio` (boolean, optional)

Whether to generate synchronized audio for the video, including sound effects, ambient sounds, and lip-synced speech. The cost of video generation is the same regardless of whether audio is generated or not.
- **Default**: `true`

### `seed` (string, optional)

Random seed for reproducibility. Note that results may still vary slightly even with the same seed.

### `end_user_id` (string, optional)

The unique user ID of the end user.

## Usage Examples

### cURL

```bash
curl -X POST https://api.runflow.io/v1/run/bytedance/seedance/2.0/text-to-video \
  -H "Authorization: Bearer $RUNFLOW_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A professional headshot, soft studio lighting"
  }'
```

### Python

```python
import requests

response = requests.post(
    "https://api.runflow.io/v1/run/bytedance/seedance/2.0/text-to-video",
    headers={"Authorization": "Bearer RUNFLOW_API_KEY"},
    json={
        "prompt": "A professional headshot, soft studio lighting",
    },
)

data = response.json()
print(data["video"]["url"])
```

### JavaScript

```javascript
const response = await fetch(
  "https://api.runflow.io/v1/run/bytedance/seedance/2.0/text-to-video",
  {
    method: "POST",
    headers: {
      "Authorization": "Bearer RUNFLOW_API_KEY",
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      prompt: "A professional headshot, soft studio lighting",
    }),
  }
);

const data = await response.json();
console.log(data.video.url);
```

## Additional Resources

- [Playground](https://www.runflow.io/models/bytedance/seedance/2.0/text-to-video)
- [API Reference](https://www.runflow.io/models/bytedance/seedance/2.0/text-to-video/api)
- [Documentation](https://www.runflow.io/docs)