# Seedance 2.5 US Reference to Video API

> Uzalishaji, uhariri na upanuzi wa video ya marejeo ya Seedance 2.5 kutoka hadi picha 30, video 10 na sauti 10

Mpangilio wa `task` hubadilisha kati ya uzalishaji unaoongozwa na marejeo, kuhariri video ya marejeo na kuipanua. Hukubali hadi picha 30, video 10 na faili 10 za sauti kama marejeo, zilizotajwa kama @Image1 na zinazofanana. Hutoa 480p, 720p au 1080p, auto au sekunde 4 hadi 30, ikiwa na uwiano kutoka 21:9 hadi 9:16. Husaidia `seed` na `bitrate_mode`.

- Model id: `bytedance/seedance-2.5/us/reference-to-video`
- Made by: ByteDance
- Category: Reference to Video
- Output: video
- Charged by usage (up to $6.944 per run; the rest of the hold is refunded): $0.0107 / 1000 tokens (cheapest run $0.416 (416 API credits))
- Run: `POST https://api.doitong.ru/v1/run/bytedance/seedance-2.5/us/reference-to-video`
- Quote: `POST https://api.doitong.ru/v1/quote/bytedance/seedance-2.5/us/reference-to-video`
- Docs page: https://doitong.com/sw/developers/models/bytedance/seedance-2.5/us/reference-to-video

## Pricing

Price: **$0.0107 / 1000 tokens**. Charged by actual usage at $0.0107 / 1000 tokens: up to $6.944 per run (the quote gives the maximum for your input), the rest is refunded automatically after the run.

The full example input below holds up to $6.944 = 6944 API credits (up to 648.9 × 1000 tokens × $0.0107) when it starts.

Prices are the upstream price in USD, paid from the API balance in API credits (1000 API credits = 1 USD). This model is charged by usage: `POST https://api.doitong.ru/v1/quote/bytedance/seedance-2.5/us/reference-to-video` with the same JSON body returns the most the run can cost for that input (`credits`, debited when the run starts); after the run you pay the usage the model reports and the rest is refunded automatically. An input whose maximum would exceed the per-run limit is refused with 422. 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 \| null | no |  |  | Kidokezo cha maandishi kinachoelekeza uzalishaji wa video. |
| `task` |  | enum (string) | no | `reference` | `reference`, `editing`, `extension` | Uteuzi wa kazi ya video wenye tabia tatu: `reference` huongoza uzalishaji kwa kutumia midia iliyotolewa, editing hubadilisha video ya rejeleo, na extension huendeleza moja. editing na extension huweka `aspect_ratio` kuwa `auto` kiotomatiki; editing pia huweka `duration` kuwa `auto`. |
| `image_urls` | `images` | array of image URL | no |  |  | Marejeleo ya picha kwa mwongozo wa video, yenye kikomo cha picha 30 na upeo wa faili 50 katika aina zote. Kila picha inaweza kuwa na ukubwa wa hadi 30 MB na lazima itumie JPG, PNG, WebP, BMP, TIFF, GIF, HEIC, au HEIF. Tumia @Image1, @Image2, na lebo zinazofuata zenye nambari kutambua marejeleo haya katika kidokezo. |
| `video_urls` | `videos` | array of video URL | no |  |  | Toa hadi video 10 za marejeleo kama faili za MP4 au MOV ili kuongoza uzalishaji, na zitambue katika kidokezo kwa @Video1, @Video2, na lebo zinazofuata zenye nambari. Kila faili lazima isiwe kubwa kuliko 200 MB na iwe na urefu wa sekunde 1.8–30.2, huku klipu zote kwa pamoja zikiwa na urefu wa hadi sekunde 30.2. Sifa za lazima za video ni 24–60 FPS, uwiano wa 0.4–2.5, na pikseli 300–6,000 kila upande. |
| `audio_urls` | `audios` | array of audio URL | no |  |  | Marejeleo ya sauti kwa mwongozo wa video yana kikomo cha muda wa jumla wa sekunde 30.2 katika faili zisizozidi 10. Kila moja lazima itumie MP3 au WAV, iwe na urefu wa sekunde 1.8–30.2, na isiwe kubwa kuliko 15 MB. Tambua faili katika kidokezo kwa @Audio1, @Audio2, na lebo zinazofuata zenye nambari. |
| `resolution` |  | enum (string) | no | `720p` | `480p`, `720p`, `1080p` | Mwonekano wa tokeo: 480p hupendelea kasi, 720p hutoa uwiano, na 1080p hutoa ubora wa juu. |
| `duration` |  | enum (string) | no | `auto` | `auto`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15`, `16`, `17`, `18`, `19`, `20`, `21`, `22`, `23`, `24`, `25`, `26`, `27`, `28`, `29`, `30` | Uteuzi wa urefu wa video: `auto` hukabidhi chaguo kwa modeli kwa kutumia kidokezo, huku muda ulioainishwa lazima uwe kati ya sekunde 4 hadi 30. |
| `aspect_ratio` |  | enum (string) | no | `auto` | `auto`, `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16` | Uwiano wa picha wa tokeo: 16:9 hutoa mlalo, 9:16 hutoa picha wima, 1:1 hutoa mraba, na 21:9 hutoa mwonekano mpana wa sinema. Chagua `auto` ili modeli ichague uwiano. |
| `generate_audio` |  | boolean | no | `true` |  | Washa hii ili video iambatane na sauti iliyosawazishwa. Sauti iliyozalishwa inajumuisha usemi unaolingana na miondoko ya midomo, mandhari ya mazingira na athari za sauti. |
| `bitrate_mode` |  | enum (string) | no | `standard` | `standard`, `high` | Chagua kiwango cha biti cha usimbaji wa tokeo: 'standard' huhifadhi chaguo chaguomsingi, ilhali 'high' huiomba modeli kuboresha ubora wa usimbaji kwa gharama ya faili kubwa zaidi. |
| `codec` |  | enum (string) | no | `auto` | `auto`, `H264`, `H265` | Uteuzi wa kodeki ya video: `auto` huacha tabia ya kodeki chaguomsingi bila kubadilika, `H264` huchagua H.264, na `H265` huchagua H.265. |
| `seed` |  | integer \| null | no |  |  | Mbegu nasibu inayotumiwa kufanya uzalishaji uweze kurudiwa, bila kuhakikisha marudio kamili: kuitumia tena bado kunaweza kutoa matokeo tofauti kidogo. |
| `end_user_id` |  | string \| null | no |  |  | Kitambulisho cha kipekee alichopewa mtumiaji wa mwisho. |

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
{}
```

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-2.5/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-2.5/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-2.5/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-2.5/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-2.5/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": 6944,
    "usd": "6.944",
    "charged": 6944,
    "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,
    "draft_id": "string"
  },
  "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} | Faili ya video iliyozalishwa. |
| `seed` | integer | Thamani ya seed inayotumika wakati wa uzalishaji. |
| `draft_id` | string \| null | Kitambulisho cha rasimu kwa ukamilishaji chini ya akaunti hiyo hiyo ndani ya siku saba; jibu lina null badala yake ikiwa hali ya rasimu imezimwa. |

## Related models

- [Seedance 2.5 US Text to Video](https://doitong.com/developers/models/bytedance/seedance-2.5/us/text-to-video.md) (`bytedance/seedance-2.5/us/text-to-video`): $0.0107 / 1000 tokens
- [Seedance 2.5 US Image to Video](https://doitong.com/developers/models/bytedance/seedance-2.5/us/image-to-video.md) (`bytedance/seedance-2.5/us/image-to-video`): $0.0107 / 1000 tokens
- [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 2.0 US Reference to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/us/reference-to-video.md) (`bytedance/seedance-2.0/us/reference-to-video`): from $0.0096 / 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-2.5/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-2.5/us/reference-to-video
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/bytedance/seedance-2.5/us/reference-to-video