# Seedance 2.0 US Reference to Video API

> 프롬프트와 참조 이미지, 동영상 및 오디오 클립으로 최대 21:9 종횡비와 4k를 지원하는 동영상 생성

참조 미디어로 안내하는 텍스트 프롬프트에서 동영상을 만듭니다. `image_urls`에 이미지 최대 9개, `video_urls`에 클립 3개, `audio_urls`에 오디오 파일 3개를 지정합니다. 프롬프트에서 @Image1, @Video1, @Audio1 등으로 참조합니다. 출력 길이는 4~15초 또는 auto이며, 480p, 720p, 1080p 또는 4k, 종횡비 9:16~21:9입니다. 동기화된 오디오는 기본적으로 생성됩니다.

- Model id: `bytedance/seedance-2.0/us/reference-to-video`
- Made by: ByteDance
- Category: Reference to Video
- Output: video
- Price per 1000 tokens: from $0.0096 / 1000 tokens (cheapest run $0.01 (10 API credits))
- Run: `POST https://api.doitong.ru/v1/run/bytedance/seedance-2.0/us/reference-to-video`
- Quote: `POST https://api.doitong.ru/v1/quote/bytedance/seedance-2.0/us/reference-to-video`
- Docs page: https://doitong.com/ko/developers/models/bytedance/seedance-2.0/us/reference-to-video

## Pricing

Price: **from $0.0096 / 1000 tokens** (the lowest tier; the quote prices your exact input). Price per 1000 tokens: the input files are measured before the run (length, resolution, frame rate). The quote measures the same files and is exactly what the run charges.

Price by tier:

- 4k: $0.0096 / 1000 tokens
- 480p: $0.0168 / 1000 tokens
- 720p: $0.0168 / 1000 tokens
- 1080p: $0.0168 / 1000 tokens

The full example input below costs $5.571 = 5571 API credits (331.5586 × 1000 tokens × $0.0168 (720p)).

Prices are the upstream price in USD, paid from the API balance in API credits (1000 API credits = 1 USD). `POST https://api.doitong.ru/v1/quote/bytedance/seedance-2.0/us/reference-to-video` with the same JSON body returns the exact price for that input; the quote is exactly what a run charges. Invalid input is never charged and failed or canceled requests are refunded automatically.

## Input parameters

Send either the canonical name or the native field name (not both). Canonical names are the same across models.

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `prompt` |  | string | yes |  |  | 동영상 생성을 안내하는 텍스트 프롬프트입니다. |
| `image_urls` | `images` | array of image URL | no |  | ≤ 9 items | 동영상 안내용 이미지 참조입니다. 이미지는 최대 9개이며 모든 모달리티를 합쳐 최대 12개 파일까지 가능합니다. 각 이미지는 30 MB 이하이고 JPEG, PNG 또는 WebP 형식이어야 합니다. 프롬프트에서 @Image1, @Image2 및 이후 번호가 붙은 레이블로 참조를 식별합니다. |
| `video_urls` | `videos` | array of video URL | no |  | ≤ 3 items | 생성용 동영상 참조입니다. MP4 또는 MOV 파일로 제공하며 프롬프트에서 @Video1, @Video2 및 이후 번호가 붙은 레이블로 식별합니다. 각 동영상의 해상도는 약 480p (640x640)에서 약 720p (834x1112) 사이여야 합니다. 최대 3개 동영상, 총 50 MB 미만이며 전체 길이는 2~15초입니다. |
| `audio_urls` | `audios` | array of audio URL | no |  | ≤ 3 items | 동영상 안내용 오디오 참조에는 이미지 또는 동영상 참조가 하나 이상 함께 필요합니다. 각 15 MB 이하의 MP3 또는 WAV 파일을 제공하며, 최대 3개 파일과 총 15초 길이 제한이 있습니다. 프롬프트에서 @Audio1, @Audio2 및 이후 번호가 붙은 레이블로 식별합니다. |
| `resolution` |  | enum (string) | no | `720p` | `480p`, `720p`, `1080p`, `4k` | 출력 해상도입니다. 480p는 속도, 720p는 균형, 1080p는 고품질, 4k는 최고 품질을 우선합니다. |
| `duration` |  | enum (string) | no | `auto` | `auto`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15` | 동영상 길이 선택입니다. `auto`는 프롬프트를 사용해 모델에 선택을 위임하며, 명시적 길이는 4~15초여야 합니다. |
| `aspect_ratio` |  | enum (string) | no | `auto` | `auto`, `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16` | 출력 가로세로 비율입니다. 16:9는 가로, 9:16은 세로, 1:1은 정사각형, 21:9는 시네마틱 울트라와이드를 의미합니다. 모델이 비율을 선택하게 하려면 `auto`를 선택합니다. |
| `generate_audio` |  | boolean | no | `true` |  | 동영상에 동기화된 오디오를 포함하려면 활성화합니다. 생성된 오디오에는 입술 움직임에 맞춘 음성, 환경음, 효과음이 포함됩니다. |
| `bitrate_mode` |  | enum (string) | no | `standard` | `standard`, `high` | 출력 인코딩 비트레이트를 선택합니다. 'standard'는 기본값을 유지하고 'high'는 더 큰 파일을 감수하고 인코딩 품질 향상을 요청합니다. |
| `codec` |  | enum (string) | no | `auto` | `auto`, `H264`, `H265` | 동영상 코덱 선택입니다. `auto`는 기본 코덱 동작을 유지하고, `H264`는 H.264를, `H265`는 H.265를 선택합니다. |
| `end_user_id` |  | string \| null | no |  |  | 최종 사용자에게 할당된 고유 식별자입니다. |

File parameters (`images`, `videos`, `audios`) take a public `https://` URL, a `data:` URI up to 10 MB, or the `file_url` of an upload from `POST /files`.

## Example input

Required parameters only:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
}
```

A fuller example:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
}
```

## Run it

Set `DOITONG_API_KEY` to a key from https://doitong.com/developers/dashboard#keys. `?wait=20` returns the finished request in the same call when it is ready within 20 seconds; otherwise poll `GET /requests/{id}` (it also accepts `?wait=`), or pass `webhook_url`.

### curl

```bash
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.ru/v1/run/bytedance/seedance-2.0/us/reference-to-video?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.ru/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.ru/v1";
const headers = {
  "Authorization": "Bearer " + process.env.DOITONG_API_KEY,
  "Content-Type": "application/json",
};

// Run the model; wait up to 20 s for the finished result in the same call
let res = await fetch(API + "/run/bytedance/seedance-2.0/us/reference-to-video?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  }),
});
let request = await res.json();
if (!res.ok) throw new Error(request.error.code + ": " + request.error.message);

// Not finished yet: long-poll until it is
while (request.status === "queued" || request.status === "running") {
  res = await fetch(API + "/requests/" + request.id + "?wait=20", { headers });
  request = await res.json();
}
if (request.status !== "succeeded") throw new Error(JSON.stringify(request.error));
console.log(request.outputs.map((o) => o.url), request.cost.credits + " API credits ($" + request.cost.usd + ")");
```

### Python

```python
import os
import requests

API = "https://api.doitong.ru/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/bytedance/seedance-2.0/us/reference-to-video", params={"wait": 20}, json=payload, headers=headers)
request = r.json()
if not r.ok:
    raise RuntimeError(request["error"]["code"] + ": " + request["error"]["message"])

# Not finished yet: long-poll until it is
while request["status"] in ("queued", "running"):
    request = requests.get(API + "/requests/" + request["id"], params={"wait": 20}, headers=headers).json()
if request["status"] != "succeeded":
    raise RuntimeError(request["error"])
print([o["url"] for o in request["outputs"]], request["cost"]["credits"], "API credits", "$" + request["cost"]["usd"])
```

### MCP

The MCP server at `https://api.doitong.ru/v1/mcp` exposes the tools `search_models`, `get_model`, `quote`, `run`, `get_request`, `cancel_request`, `list_requests`, `create_upload` and `get_account`. A `run` call for this model:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "run",
    "arguments": {
      "model_id": "bytedance/seedance-2.0/us/reference-to-video",
      "input": {
        "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
      },
      "wait_seconds": 20
    }
  }
}
```

## Response

Every call returns a request object. `status` is one of `queued`, `running`, `succeeded`, `failed`, `canceled`. `outputs` lists the generated files with URLs on our storage (kept forever, or 7 days with `?storage=temporary`; `storage` says which); `output` is the model's own result object with the same URLs.

```json
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "bytedance/seedance-2.0/us/reference-to-video",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 5571,
    "usd": "5.571",
    "charged": 5571,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  },
  "output": {
    "video": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_name": "0-output.mp4",
      "file_size": 1843200
    },
    "seed": 42
  },
  "outputs": [
    {
      "type": "video",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_size": 1843200,
      "width": 1280,
      "height": 720,
      "duration": 5,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `video` | object {url, content_type, file_name, file_size} | 생성으로 만들어진 동영상 파일입니다. |
| `seed` | integer | 생성 중 적용되는 시드 값입니다. |

## Related models

- [Seedance 2.0 US Text to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/us/text-to-video.md) (`bytedance/seedance-2.0/us/text-to-video`): from $0.1731 / second
- [Seedance 2.0 US Image to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/us/image-to-video.md) (`bytedance/seedance-2.0/us/image-to-video`): from $0.141 / second
- [Seedance 2.0 Fast Reference to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/fast/reference-to-video.md) (`bytedance/seedance-2.0/fast/reference-to-video`): from $0.113 / second
- [Seedance 2.0 Reference to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/reference-to-video.md) (`bytedance/seedance-2.0/reference-to-video`): from $0.141 / second
- [Wan 3.0 Reference to Video](https://doitong.com/developers/models/alibaba/wan-3.0/reference-to-video.md) (`alibaba/wan-3.0/reference-to-video`): from $0.05 / second
- [Seedance 2.0 Mini](https://doitong.com/developers/models/bytedance/seedance-2.0/mini/reference-to-video.md) (`bytedance/seedance-2.0/mini/reference-to-video`): $0.007 / 1000 tokens
- [Seedance 2.5 US Reference to Video](https://doitong.com/developers/models/bytedance/seedance-2.5/us/reference-to-video.md) (`bytedance/seedance-2.5/us/reference-to-video`): $0.0107 / 1000 tokens
- [Alibaba V2.6 · Reference to Video · Flash](https://doitong.com/developers/models/wan/v2.6/reference-to-video/flash.md) (`wan/v2.6/reference-to-video/flash`): from $0.05 / second of output video

## Links

- HTML page: https://doitong.com/developers/models/bytedance/seedance-2.0/us/reference-to-video
- All models and guides for AI agents: https://doitong.com/developers/llms.txt
- OpenAPI 3.1 with this model's typed request body: https://doitong.com/developers/openapi.json?model=bytedance/seedance-2.0/us/reference-to-video
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/bytedance/seedance-2.0/us/reference-to-video