# Seedance 2.0 US Reference to Video API

> Vídeo a partir de um prompt e imagens, vídeos e clipes de áudio de referência, com proporções de até 21:9 e 4k

Cria um vídeo a partir de um prompt de texto orientado por mídias de referência: até 9 imagens em `image_urls`, 3 clipes em `video_urls` e 3 arquivos de áudio em `audio_urls`. Referencie-os no prompt como @Image1, @Video1, @Audio1 e assim por diante. A saída tem de 4 a 15 segundos ou duração automática, em 480p, 720p, 1080p ou 4k, com proporções de 9:16 a 21:9. O áudio sincronizado é gerado por padrão.

- 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/pt-BR/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 |  |  | Prompt de texto que orienta a geração de vídeo. |
| `image_urls` | `images` | array of image URL | no |  | ≤ 9 items | Referências de imagem para orientação do vídeo, limitadas a 9 imagens e sujeitas ao máximo de 12 arquivos em todas as modalidades. Cada imagem pode ter no máximo 30 MB e deve usar JPEG, PNG ou WebP. Use @Image1, @Image2 e os rótulos numerados subsequentes para identificar essas referências no prompt. |
| `video_urls` | `videos` | array of video URL | no |  | ≤ 3 items | Referências de vídeo para geração, fornecidas como arquivos MP4 ou MOV e identificadas no prompt por @Video1, @Video2 e os rótulos numerados subsequentes. Cada uma deve ter resolução de aproximadamente 480p (640x640) a aproximadamente 720p (834x1112). O conjunto é limitado a 3 vídeos totalizando menos de 50 MB, com duração total de 2 a 15 segundos. |
| `audio_urls` | `audios` | array of audio URL | no |  | ≤ 3 items | As referências de áudio para orientação do vídeo exigem pelo menos uma referência de imagem ou vídeo acompanhando. Forneça arquivos MP3 ou WAV de no máximo 15 MB cada, com no máximo 3 arquivos e duração total limitada a 15 segundos. Identifique-os no prompt usando @Audio1, @Audio2 e os rótulos numerados subsequentes. |
| `resolution` |  | enum (string) | no | `720p` | `480p`, `720p`, `1080p`, `4k` | Resolução de saída: 480p prioriza a velocidade, 720p oferece equilíbrio, 1080p proporciona alta qualidade e 4k proporciona a maior qualidade. |
| `duration` |  | enum (string) | no | `auto` | `auto`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15` | Seleção da duração do vídeo: `auto` delega a escolha ao modelo usando o prompt, enquanto uma duração explícita deve ser de 4 a 15 segundos. |
| `aspect_ratio` |  | enum (string) | no | `auto` | `auto`, `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16` | Proporção da saída: 16:9 produz paisagem, 9:16 produz retrato/vertical, 1:1 produz quadrado e 21:9 produz ultrawide cinematográfico. Selecione `auto` para que o modelo escolha a proporção. |
| `generate_audio` |  | boolean | no | `true` |  | Ative para acompanhar o vídeo com áudio sincronizado. O áudio gerado inclui fala sincronizada com os movimentos dos lábios, ambiente e efeitos sonoros. |
| `bitrate_mode` |  | enum (string) | no | `standard` | `standard`, `high` | Escolha a taxa de bits da codificação de saída: 'standard' mantém o padrão, enquanto 'high' solicita que o modelo melhore a qualidade da codificação em troca de um arquivo maior. |
| `codec` |  | enum (string) | no | `auto` | `auto`, `H264`, `H265` | Seleção do codec de vídeo: `auto` mantém o comportamento padrão do codec, `H264` seleciona H.264 e `H265` seleciona H.265. |
| `end_user_id` |  | string \| null | no |  |  | Identificador exclusivo atribuído ao usuário final. |

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} | Arquivo de vídeo produzido pela geração. |
| `seed` | integer | Valor de seed aplicado durante a geração. |

## 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