# Happy Horse 1.1 Reference to Video API

> 1-9 حوالہ تصاویر سے ویڈیو، جن کے کرداروں کو پرامپٹ میں character1..character9 کے طور پر پکارا جاتا ہے

ایسی ویڈیو تخلیق کرتا ہے جو آپ کی ریفرنس تصاویر کے سبجیکٹس کو مستقل رکھتی ہے۔ `image_urls` میں 1 سے 9 تصاویر فراہم کریں اور پرامپٹ میں انہیں اسی ترتیب سے character1 سے character9 کے طور پر ریفر کریں۔ 3 سے 15 سیکنڈ، 720p یا 1080p، اور 21:9 سے 9:21 تک نو اسپیکٹ ریشوز میں سے ایک منتخب کریں۔ پرامپٹ 2500 کریکٹرز تک ہو سکتے ہیں۔

- Model id: `alibaba/happy-horse/v1.1/reference-to-video`
- Made by: Alibaba
- Category: Reference to Video
- Output: video
- Price: from $0.14 / second (5 s ≈ $0.70) (cheapest run $0.70 (700 API credits))
- Run: `POST https://api.doitong.ru/v1/run/alibaba/happy-horse/v1.1/reference-to-video`
- Quote: `POST https://api.doitong.ru/v1/quote/alibaba/happy-horse/v1.1/reference-to-video`
- Docs page: https://doitong.com/ur/developers/models/alibaba/happy-horse/v1.1/reference-to-video

## Pricing

Price: **from $0.14 / second (5 s ≈ $0.70)** (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 `resolution` = 1080p: $0.18 (180 API credits) / second

The full example input below costs $0.90 = 900 API credits (5 s × 180 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/alibaba/happy-horse/v1.1/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 |  | ≥ 1 characters | تخلیق کی جانے والی ویڈیو کی وضاحت کرنے والا متن، زیادہ سے زیادہ 2500 حروف۔ تصویر کے موضوعات کی شناخت `character1`، `character2` سے `character9` تک کریں، جو `image_urls` میں ان کی پوزیشنز کے مطابق ہوں۔ |
| `image_urls` | `images` | array of image URL | yes |  |  | موضوع کی مستقل مزاجی کے حوالے: 1–9 تصاویر فراہم کریں، ہر ایک زیادہ سے زیادہ 20 MB۔ JPEG، JPG، PNG، WEBP استعمال کریں، مختصر کنارے کی کم از کم لمبائی 400 px ہو؛ تجویز کردہ ریزولوشن 720P یا اس سے زیادہ ہے۔ |
| `aspect_ratio` |  | enum (string) | no | `16:9` | `16:9`, `9:16`, `1:1`, `4:3`, `3:4`, `21:9`, `9:21`, `5:4`, `4:5` | نتیجہ خیز ویڈیو کا aspect ratio۔ |
| `resolution` |  | enum (string) | no | `1080p` | `720p`, `1080p` | نتیجہ خیز ویڈیو کے لیے ریزولوشن کا درجہ۔ |
| `duration` |  | enum (integer) | no | `5` | `3`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15` | نتیجہ خیز ویڈیو کی لمبائی، 3 سے 15 سیکنڈ تک۔ |
| `seed` |  | integer \| null | no |  |  | قابلِ تکرار نتائج فعال کرنے والا تصادفی سیڈ، 0 سے 2147483647 تک۔ |
| `enable_safety_checker` |  | boolean | no | `true` |  | ان پٹ اور آؤٹ پٹ دونوں کی moderation ہر درخواست پر نافذ ہوتی ہے، جب تک اکاؤنٹ اسے غیر فعال کرنے کا مجاز نہ ہو اور آپشن بند نہ کیا جائے۔ |

File parameters (`images`) 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",
  "images": [
    "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
  ]
}
```

A fuller example:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "image_urls": [
    "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
  ]
}
```

## 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/alibaba/happy-horse/v1.1/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",
    "image_urls": [
      "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
    ]
  }'

# 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/alibaba/happy-horse/v1.1/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",
    "image_urls": [
      "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
    ]
  }),
});
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",
    "image_urls": [
        "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    ],
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/alibaba/happy-horse/v1.1/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": "alibaba/happy-horse/v1.1/reference-to-video",
      "input": {
        "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
        "image_urls": [
          "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
        ]
      },
      "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": "alibaba/happy-horse/v1.1/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": 900,
    "usd": "0.90",
    "charged": 900,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "image_urls": [
      "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
    ]
  },
  "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,
      "width": 1024,
      "height": 768,
      "fps": 1.0,
      "duration": 5,
      "num_frames": 1
    },
    "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, width, height, fps, duration, num_frames} | تخلیق سے تیار کردہ ویڈیو فائل۔ |
| `seed` | integer | تخلیق کے دوران لاگو ہونے والی سیڈ قدر۔ |

## Related models

- [Happy Horse 1.1 Text to Video](https://doitong.com/developers/models/alibaba/happy-horse/v1.1/text-to-video.md) (`alibaba/happy-horse/v1.1/text-to-video`): from $0.14 / second
- [Happy Horse 1.1 Image to Video](https://doitong.com/developers/models/alibaba/happy-horse/v1.1/image-to-video.md) (`alibaba/happy-horse/v1.1/image-to-video`): from $0.14 / 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 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
- [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
- [Happy Horse · Reference to Video](https://doitong.com/developers/models/alibaba/happy-horse/reference-to-video.md) (`alibaba/happy-horse/reference-to-video`): from $0.14 / second
- [Wan 2.7 Reference to Video](https://doitong.com/developers/models/wan/v2.7/reference-to-video.md) (`wan/v2.7/reference-to-video`): $0.10 / second of output video

## Links

- HTML page: https://doitong.com/developers/models/alibaba/happy-horse/v1.1/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=alibaba/happy-horse/v1.1/reference-to-video
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/alibaba/happy-horse/v1.1/reference-to-video