> ## Documentation Index
> Fetch the complete documentation index at: https://docs.toapis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Doubao SeeDance 1.5 Pro 動画生成

> Generate videos using ByteDance Doubao SeeDance 1.5 Pro model

> [!NOTE]
>
> **中国本土のユーザー向け：** 中国本土のユーザーは `https://toapis.cn` を API エンドポイント（Base URL）としてご利用ください。本ドキュメント内の例では `https://toapis.com` を `https://toapis.cn` に置き換えてください。

* ByteDance Doubao video generation model 1.5 Pro version
* Supports text-to-video generation
* Supports first frame / last frame control
* Does not support reference image mode
* Supports audio generation (1.5 Pro exclusive feature)
* Async task management, query results by task ID

## Authorizations

**Authorization** `string` *required*

All endpoints require Bearer Token authentication

Get your API Key from the [API Key Management Page](https://toapis.com/console/token)

Add to request header:

```
Authorization: Bearer YOUR_API_KEY
```

## Body

**model** `string` *required* (default: doubao-seedance-1-5-pro)

Video generation model name

Available models:

* `doubao-seedance-1-5-pro` - 1.5 Pro version, supports audio generation and first/last frame control

**prompt** `string` *required*

Video content description

Describe scenes, actions, and style in detail for better generation results

Example: `"Sunset at the beach, golden sunlight on the sea, waves gently hitting the sand"`

**duration** `integer` (default: 5)

Video duration (seconds)

Supported range: `4` \~ `12` seconds

Default: `5`

**aspect\_ratio** `string` (default: 16:9)

Video aspect ratio

Options:

* `16:9` - Landscape
* `9:16` - Portrait
* `1:1` - Square
* `4:3` - Traditional ratio
* `3:4` - Vertical traditional ratio
* `21:9` - Ultra-wide

Default: `16:9`

## Resolution and Aspect Ratio Combinations

| Resolution | Supported Aspect Ratios | Notes |
| - | - | - |
| 480p | 16:9, 4:3, 1:1, 3:4, 9:16, 21:9 | All supported |
| 720p | 16:9, 4:3, 1:1, 3:4, 9:16, 21:9 | All supported (default) |
| 1080p | 16:9, 4:3, 1:1, 3:4, 9:16, 21:9 | All supported |

**image\_urls** `string[]`

Compatibility image URL array for first/last-frame image-to-video generation

Compatibility rules:

* 1 image: treated as `first_frame`
* 2 images: treated as `first_frame` and `last_frame`
* More than 2 images: only the first two are used

We recommend using `image_with_roles` to explicitly specify first and last frames

Example: `["https://example.com/first.png", "https://example.com/last.png"]`

`image_urls` and `image_with_roles` cannot be used together

**image\_with\_roles** `array`

Image array with roles for explicit first/last-frame control

**Field 説明**

**url** `string` *required*

Image URL

**role** `string` *required*

Image role

Options:

* `first_frame` - First frame image, used as the starting frame (only one supported)
* `last_frame` - Last frame image, used as the ending frame (only one supported)

Example:

```json theme={null}
[
  {"url": "https://example.com/first.png", "role": "first_frame"},
  {"url": "https://example.com/last.png", "role": "last_frame"}
]
```

> [!WARNING]
>
> * `image_urls` and `image_with_roles` cannot be used together
> * Only one first frame and one last frame are supported
> * 1.5 Pro does not support the `reference_image` role. Use Seedance 2.0 if you need reference image control

**metadata** `object`

Extended parameters

**Field 説明**

**resolution** `string` (default: 720p)

Video resolution

Options:

* `480p` - Standard definition
* `720p` - High definition (default)
* `1080p` - Full HD

**seed** `integer`

Seed integer for controlling generation randomness

Range: `-1` \~ `2^32-1`

The same seed can produce similar results, but exact output is not guaranteed

**audio** `boolean` (default: false)

Whether to generate audio

When set to `true`, the video will include AI-generated accompanying audio

**1.5 Pro exclusive feature**

**camerafixed** `boolean` (default: false)

Whether to keep the camera fixed

When set to `true`, the camera position remains fixed throughout the video

## Differences from 1.0

| Feature | 1.0 fast/quality | 1.5 Pro |
| - | - | - |
| Default resolution | 1080p | **720p** |
| Supported resolutions | 480p/720p/1080p | **480p/720p/1080p** |
| Duration range | 2-12s | **4-12s** |
| Audio generation | Not supported | **Supported** |
| Image control mode | `reference` single reference image | **`first_frame` / `last_frame` frame mode** |

## 素材審査

画像を含むリクエストでは, 一部のチャネルが生成の送信前に画像を自動で審査します. 追加のパラメーターは不要で, 従来の画像フィールドに画像 URL を指定するだけです.

* 受理されたリクエストはすぐに動画タスクを返します. 審査が必要な場合, タスクは `queued` のままとなり, リクエスト内の全素材が通過してから生成を送信します. 初回の審査には数分かかることがあります. 同じユーザーが同じチャネルで同じ URL を再利用すると審査結果も再利用されます.
* 素材準備は 1 ラウンドあたり既定で最長 20 分です. 審査拒否または準備タイムアウトの場合, タスクは `failed` で終了し, 理由は `error.message` で確認できます. 審査を通過しなかった場合, 動画生成料金は発生しません.
* 画像は公開 HTTP(S) URL で指定してください. Base64 とローカルパスは使えません. 画像は 20 MB 以内 (一部のチャネルは最大 30 MB) です. モデル本来の形式制限は変わりません.
* 審査を行うチャネルは受理時に画像 URL を検証します. URL に認証情報が含まれる, または 2048 バイトを超える場合は, HTTP 400 (`error.code` は `invalid_private_assets`) を返します.
* 素材は URL で識別されます. ファイル内容を変更した場合は新しい URL を使ってください.
* 旧 `asset://` 参照は廃止され, HTTP 400 を返します.

## レスポンス

**id** `string`

Unique task identifier for status queries

**object** `string`

Object type, always `generation.task`

**model** `string`

モデル name used

**status** `string`

Task status

* `queued` - Queued for processing
* `in_progress` - Processing
* `completed` - Successfully completed
* `failed` - Failed

**progress** `integer`

Task progress percentage (0-100)

**created\_at** `integer`

Task creation timestamp (Unix timestamp)

**metadata** `object`

Task metadata

```bash cURL (Text-to-Video with Audio) theme={null}
curl --request POST \
  --url https://toapis.com/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "doubao-seedance-1-5-pro",
    "prompt": "Sunset at the beach, golden sunlight on the sea, waves gently hitting the sand",
    "duration": 5,
    "aspect_ratio": "16:9",
    "metadata": {
      "resolution": "720p",
      "audio": true
    }
  }'
```

```bash cURL (First-Frame Image-to-Video) theme={null}
curl --request POST \
  --url https://toapis.com/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "doubao-seedance-1-5-pro",
    "prompt": "A cat chasing a snake through the grass while the camera tracks the motion",
    "image_with_roles": [
      {"url": "https://example.com/first.png", "role": "first_frame"}
    ],
    "metadata": {
      "resolution": "720p",
      "audio": true
    }
  }'
```

```bash cURL (First + Last Frame Image-to-Video) theme={null}
curl --request POST \
  --url https://toapis.com/v1/videos/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "doubao-seedance-1-5-pro",
    "prompt": "A girl spins beneath cherry blossoms and slowly comes to a stop at the end",
    "image_with_roles": [
      {"url": "https://example.com/first.png", "role": "first_frame"},
      {"url": "https://example.com/last.png", "role": "last_frame"}
    ],
    "duration": 5,
    "aspect_ratio": "9:16",
    "metadata": {
      "resolution": "720p",
      "audio": true
    }
  }'
```

```python Python theme={null}
import requests

response = requests.post(
    "https://toapis.com/v1/videos/generations",
    headers={
        "Authorization": "Bearer your-ToAPIs-key",
        "Content-Type": "application/json"
    },
    json={
        "model": "doubao-seedance-1-5-pro",
        "prompt": "Sunset at the beach, golden sunlight on the sea, waves gently hitting the sand",
        "duration": 5,
        "aspect_ratio": "16:9",
        "metadata": {
            "resolution": "720p",
            "audio": True
        }
    }
)

task = response.json()
print(f"Task ID: {task['id']}")
print(f"Status: {task['status']}")
```

```javascript JavaScript theme={null}
const response = await fetch('https://toapis.com/v1/videos/generations', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer your-ToAPIs-key',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    model: 'doubao-seedance-1-5-pro',
    prompt: 'Sunset at the beach, golden sunlight on the sea, waves gently hitting the sand',
    duration: 5,
    aspect_ratio: '16:9',
    metadata: {
      resolution: '720p',
      audio: true
    }
  })
});

const task = await response.json();
console.log(`Task ID: ${task.id}`);
console.log(`Status: ${task.status}`);
```

```json 200 theme={null}
{
  "id": "task_vid_xyz789ghi012",
  "object": "generation.task",
  "model": "doubao-seedance-1-5-pro",
  "status": "queued",
  "progress": 0,
  "created_at": 1703884800,
  "metadata": {}
}
```


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