# Seedance 2.0 Fast Reference to Video API

> O maj sigo, maj lokhano Seedance 2.0 multi-reference-modus, 480p vaj 720p e zvukosa.

Referencirin dži 9 kipa, 3 video thaj 3 audio-klipura sar @Image1, @Video1, @Audio1 andro prompto thaj lel jekh 4 dži 15-sekundako scena e sinhronizirime zvukosa pe 480p vaj 720p. Kampel najman jekh kipo vaj video, maksimum 12 fajlo total; e referencijalne videon len khetane 2 dži 15 sekunda thaj o referencijalno audio maksimum 15 sekunda. Referencijalne videon si faturime vi pala pesko duripe, kadja klipura e video-referencenca si maj caro pala sekunda.

- Model id: `bytedance/seedance-2.0/fast/reference-to-video`
- Made by: ByteDance
- Category: Reference to Video
- Output: video
- Price: from $0.113 / second (4 s ≈ $0.452) (cheapest run $0.452 (452 API credits))
- Run: `POST https://api.doitong.ru/v1/run/bytedance/seedance-2.0/fast/reference-to-video`
- Quote: `POST https://api.doitong.ru/v1/quote/bytedance/seedance-2.0/fast/reference-to-video`
- Docs page: https://doitong.com/rom/developers/models/bytedance/seedance-2.0/fast/reference-to-video

## Pricing

Price: **from $0.113 / second (4 s ≈ $0.452)** (the lowest tier; the quote prices your exact input). Billed per second of output (`duration`, default 15).

Price rules (the first rule that matches the input wins; a parameter you leave out counts as its default):

- When `video_urls` is set and `duration` ≤ 4: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set and `duration` ≤ 5: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set and `duration` ≤ 6: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set and `duration` ≤ 7: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set and `duration` ≤ 8: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set and `duration` ≤ 9: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set and `duration` ≤ 10: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set and `duration` ≤ 11: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set and `duration` ≤ 12: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set and `duration` ≤ 13: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set and `duration` ≤ 14: by `resolution`, 480p: $0.113, 720p: $0.243 / second
- When `video_urls` is set: by `resolution`, 480p: $0.113, 720p: $0.243 / second

The full example input below costs $0.565 = 565 API credits (5 s × 113 API credits).

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/fast/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 |  |  | Tekstuno prompto savo direktivel video keripen. |
| `image_urls` | `images` | array of image URL | no |  | ≤ 9 items | Kipo reference pala video guida, limitime 9 kiporenca thaj 12-fajlonesko maksimumosa ande sa modalitetora. Sako kipo šaj te avel dži 30 MB thaj musaj te avel JPEG, PNG, vaj WebP. Istosar @Image1, @Image2 thaj aver numerime labelora and-o prompto. |
| `video_urls` | `videos` | array of video URL | no |  | ≤ 3 items | Video reference pala keripen, diena sar MP4 vaj MOV fajlora thaj identifikime and-o prompto @Video1, @Video2 thaj aver numerime labelonca. Sako musaj te lel rezolucija približno 480p (640x640) dži približno 720p (834x1112). Seto si limitime 3 videosa, total 50 MB-tar tele, thaj aggregate duration 2 dži 15 sekunde. |
| `audio_urls` | `audios` | array of audio URL | no |  | ≤ 3 items | Audio reference pala video guida mangel najmanic jekh kiposko vaj videosko reference. Dien MP3 vaj WAV fajlora sako dži 15 MB, na but sar 3 fajlora, aggregate durationosa dži 15 sekunde. Identifikirin len and-o prompto @Audio1, @Audio2 thaj aver numerime labelonca. |
| `resolution` |  | enum (string) | no | `720p` | `480p`, `720p` | Rezultatoski rezolucija: 480p prioritetinel keripasko sigal, 720p denel balansime alosaripen. |
| `duration` |  | enum (string) | no | `auto` | `auto`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15` | Videoja lungimosko alosaripen: `auto` mukel ko modelo te alosarel promptostar, explicitno duration musaj te avel 4 dži 15 sekunde. |
| `aspect_ratio` |  | enum (string) | no | `auto` | `auto`, `21:9`, `16:9`, `4:3`, `1:1`, `3:4`, `9:16` | Rezultatosko aspect ratio: 16:9 landscape, 9:16 portrait/vertical, 1:1 square, 21:9 cinematic ultrawide. Alosar `auto` pala te alosarel o modelo. |
| `generate_audio` |  | boolean | no | `true` |  | Aktivirin akava te lel videoja jekhibe audio. Kerdo audio si vakeripen savo matchinel othoja labialone movementenca, ambientno thanesko šum thaj sound effects. |
| `bitrate_mode` |  | enum (string) | no | `standard` | `standard`, `high` | Alosar rezultato encoding bitrate: 'standard' mukel standardno, 'high' mangela feder encoding kualitas pala bareder fajlo. |
| `codec` |  | enum (string) | no | `auto` | `auto`, `H264`, `H265` | Video codec: `auto` mukel standardno codec davranipen, `H264` alosarel H.264, thaj `H265` alosarel H.265. |

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": "@Image1 The white sneaker spins slowly on a wet neon street, puddle splashes in slow motion, punchy beat"
}
```

A fuller example:

```json
{
  "prompt": "@Image1 The white sneaker spins slowly on a wet neon street, puddle splashes in slow motion, punchy beat",
  "images": [
    "https://content.doitong.com/images/showcase/v3/gen_sneaker_ad.jpg"
  ],
  "duration": 5,
  "resolution": "480p"
}
```

## 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/fast/reference-to-video?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "@Image1 The white sneaker spins slowly on a wet neon street, puddle splashes in slow motion, punchy beat",
    "images": [
      "https://content.doitong.com/images/showcase/v3/gen_sneaker_ad.jpg"
    ],
    "duration": 5,
    "resolution": "480p"
  }'

# 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/fast/reference-to-video?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "@Image1 The white sneaker spins slowly on a wet neon street, puddle splashes in slow motion, punchy beat",
    "images": [
      "https://content.doitong.com/images/showcase/v3/gen_sneaker_ad.jpg"
    ],
    "duration": 5,
    "resolution": "480p"
  }),
});
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": "@Image1 The white sneaker spins slowly on a wet neon street, puddle splashes in slow motion, punchy beat",
    "images": [
        "https://content.doitong.com/images/showcase/v3/gen_sneaker_ad.jpg",
    ],
    "duration": 5,
    "resolution": "480p",
}

# 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/fast/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/fast/reference-to-video",
      "input": {
        "prompt": "@Image1 The white sneaker spins slowly on a wet neon street, puddle splashes in slow motion, punchy beat",
        "images": [
          "https://content.doitong.com/images/showcase/v3/gen_sneaker_ad.jpg"
        ],
        "duration": 5,
        "resolution": "480p"
      },
      "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/fast/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": 565,
    "usd": "0.565",
    "charged": 565,
    "refunded": 0
  },
  "input": {
    "prompt": "@Image1 The white sneaker spins slowly on a wet neon street, puddle splashes in slow motion, punchy beat",
    "images": [
      "https://content.doitong.com/images/showcase/v3/gen_sneaker_ad.jpg"
    ],
    "duration": 5,
    "resolution": "480p"
  },
  "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} | Video-fajlo kerdino generiripeça. |
| `seed` | integer | Seed-valoro aplikovano ko generiripe. |

## Related models

- [Seedance 2.0 Fast Text to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/fast/text-to-video.md) (`bytedance/seedance-2.0/fast/text-to-video`): from $0.113 / second
- [Seedance 2.0 Mini Text to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/mini/text-to-video.md) (`bytedance/seedance-2.0/mini/text-to-video`): from $0.0721 / second
- [Seedance 2.0 Text to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/text-to-video.md) (`bytedance/seedance-2.0/text-to-video`): from $0.141 / second
- [Seedance 2.0 Fast Image to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/fast/image-to-video.md) (`bytedance/seedance-2.0/fast/image-to-video`): from $0.113 / second
- [Seedance 2.0 Image to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/image-to-video.md) (`bytedance/seedance-2.0/image-to-video`): from $0.141 / second
- [Seedance 2.0 Mini Image to Video](https://doitong.com/developers/models/bytedance/seedance-2.0/mini/image-to-video.md) (`bytedance/seedance-2.0/mini/image-to-video`): from $0.0721 / 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 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

## Links

- HTML page: https://doitong.com/developers/models/bytedance/seedance-2.0/fast/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/fast/reference-to-video
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/bytedance/seedance-2.0/fast/reference-to-video