# Seedance 2.5 US Reference to Video API

> Seedance 2.5 atsauces video ģenerēšana, rediģēšana un pagarināšana no līdz 30 attēliem, 10 video un 10 audio failiem

`task` iestatījums pārslēdzas starp atsauces vadītu ģenerēšanu, atsauces video rediģēšanu un tā pagarināšanu. Pieņem līdz 30 attēliem, 10 video un 10 audio failiem kā atsauces, uz kuriem atsaucas kā @Image1 un līdzīgi. Izvade ir 480p, 720p vai 1080p, automātiski vai no 4 līdz 30 sekundēm, ar malu attiecībām no 21:9 līdz 9:16. Atbalsta `seed` un `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/lv/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 |  |  | Teksta uzvedne, kas vada video ģenerēšanu. |
| `task` |  | enum (string) | no | `reference` | `reference`, `editing`, `extension` | Video uzdevuma izvēle ar trim darbībām: `reference` vada ģenerēšanu, izmantojot nodrošinātos multivides failus, editing maina atsauces video, bet extension to turpina. Gan editing, gan extension automātiski iestata `aspect_ratio` uz `auto`; editing iestata arī `duration` uz `auto`. |
| `image_urls` | `images` | array of image URL | no |  |  | Attēlu atsauces video vadībai, ierobežotas līdz 30 attēliem un 50 failiem visās modalitātēs kopā. Katrs attēls drīkst būt ne lielāks par 30 MB un jābūt JPG, PNG, WebP, BMP, TIFF, GIF, HEIC vai HEIF formātā. Izmantojiet @Image1, @Image2 un nākamos numurētos apzīmējumus, lai uzvednē identificētu šīs atsauces. |
| `video_urls` | `videos` | array of video URL | no |  |  | Nodrošiniet līdz 10 atsauces video kā MP4 vai MOV failus ģenerēšanas vadībai un uzvednē identificējiet tos ar @Video1, @Video2 un nākamajiem numurētajiem apzīmējumiem. Katrs fails nedrīkst pārsniegt 200 MB, un tā ilgumam jābūt 1.8–30.2 sekundes; visu klipu kopējais ilgums nedrīkst pārsniegt 30.2 sekundes. Nepieciešamie video parametri ir 24–60 FPS, malu attiecība 0.4–2.5 un 300–6,000 pikseļu katrā malā. |
| `audio_urls` | `audios` | array of audio URL | no |  |  | Audio atsauču kopējais ilgums nedrīkst pārsniegt 30.2 sekundes, izmantojot ne vairāk kā 10 failus. Katram jābūt MP3 vai WAV formātā, 1.8–30.2 sekunžu garumā un ne lielākam par 15 MB. Uzvednē identificējiet failus ar @Audio1, @Audio2 un nākamajiem numurētajiem apzīmējumiem. |
| `resolution` |  | enum (string) | no | `720p` | `480p`, `720p`, `1080p` | Izvades izšķirtspēja: 480p prioritizē ātrumu, 720p nodrošina līdzsvaru, bet 1080p — augstu kvalitāti. |
| `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` | Video ilguma izvēle: `auto` ļauj modelim izvēlēties, izmantojot uzvedni, bet tieši norādītam ilgumam jābūt no 4 līdz 30 sekundēm. |
| `aspect_ratio` |  | enum (string) | no | `auto` | `auto`, `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16` | Izvades malu attiecība: 16:9 nodrošina ainavas orientāciju, 9:16 — portreta/vertikālo, 1:1 — kvadrātveida, bet 21:9 — kinematogrāfisku īpaši plato. Izvēlieties `auto`, lai attiecību izvēlētos modelis. |
| `generate_audio` |  | boolean | no | `true` |  | Iespējojiet šo opciju, lai video papildinātu ar sinhronizētu audio. Ģenerētais audio ietver runu, kas saskaņota ar lūpu kustībām, vides atmosfēru un skaņas efektus. |
| `bitrate_mode` |  | enum (string) | no | `standard` | `standard`, `high` | Izvēlieties izvades kodējuma bitreitu: 'standard' saglabā noklusējumu, bet 'high' pieprasa uzlabot kodējuma kvalitāti, palielinot faila izmēru. |
| `codec` |  | enum (string) | no | `auto` | `auto`, `H264`, `H265` | Video kodeka izvēle: `auto` nemaina noklusējuma kodeka darbību, `H264` izvēlas H.264, bet `H265` — H.265. |
| `seed` |  | integer \| null | no |  |  | Nejaušs sēklas skaitlis, kas padara ģenerēšanu atkārtojamu, negarantējot precīzu atkārtojumu: atkārtota izmantošana joprojām var dot nedaudz atšķirīgus rezultātus. |
| `end_user_id` |  | string \| null | no |  |  | Gala lietotājam piešķirts unikāls identifikators. |

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} | Ģenerēšanas rezultātā iegūtais video fails. |
| `seed` | integer | Ģenerēšanas laikā lietotā sēklas vērtība. |
| `draft_id` | string \| null | Melnraksta identifikators pabeigšanai tajā pašā kontā septiņu dienu laikā; ja melnraksta režīms ir atspējots, atbilde tā vietā satur null. |

## 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