# Workflow Utilities Scale Video API

> اندازهٔ ویدیو را با عرض و ارتفاع و حالت‌های کشش، حاشیه‌گذاری یا برش، همراه با تنظیمات کُدک و کیفیت تغییر می‌دهد

اندازهٔ ویدیو را به `width` هدف (حداکثر 7680) و/یا `height` (حداکثر 4320) تغییر می‌دهد؛ اگر فقط یکی ارائه شود، دیگری از نسبت تصویر پیروی می‌کند. `mode` می‌تواند stretch، pad (با رنگ انتخابی) یا crop باشد. با libx264 یا libx265، پیش‌تنظیم سرعتی از ultrafast تا slow و `crf` از 0 تا 51 کدگذاری می‌کند. ابعاد اصلی و جدید را برمی‌گرداند.

- Model id: `workflow-utilities/scale-video`
- Made by: Utility
- Category: Video to Video
- Output: video
- Charged by usage (up to $3.60 per run, typical $0.032; the rest of the hold is refunded): $0.001 / second of processing time (cheapest run $0.032 (32 API credits))
- Run: `POST https://api.doitong.ru/v1/run/workflow-utilities/scale-video`
- Quote: `POST https://api.doitong.ru/v1/quote/workflow-utilities/scale-video`
- Docs page: https://doitong.com/fa/developers/models/workflow-utilities/scale-video

## Pricing

Price: **$0.001 / second of processing time**. Charged by actual usage at $0.001 / second of processing time: up to $3.60 per run (the quote gives the maximum for your input), the rest is refunded automatically after the run. A typical run costs $0.032.

The full example input below holds up to $3.60 = 3600 API credits (up to 3600 s of processing time × $0.001) when it starts; a typical run costs $0.032 (32 API credits).

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/workflow-utilities/scale-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 |
|---|---|---|---|---|---|---|
| `video_url` | `video` | string (video URL) | yes |  |  | ویدیو را برای مقیاس‌بندی یا تغییر اندازه از طریق URL ارائه کنید؛ ارتفاع و عرض باید هر دو با ابعاد زوج باشند تا الزامات کدک ویدیو رعایت شود. |
| `width` |  | integer \| null | no |  | 2 – 7,680 | عرض خروجی برحسب پیکسل، قابل استفاده به‌تنهایی یا همراه ارتفاع؛ ارائه حداقل یکی از ابعاد الزامی است. اگر فقط عرض ارائه شود، ارتفاع بدون تغییر نسبت تصویر خودکار محاسبه می‌شود. |
| `height` |  | integer \| null | no |  | 2 – 4,320 | ارتفاع خروجی برحسب پیکسل، قابل استفاده به‌تنهایی یا همراه عرض؛ ارائه حداقل یکی از ابعاد الزامی است. اگر فقط ارتفاع ارائه شود، عرض بدون تغییر نسبت تصویر خودکار محاسبه می‌شود. |
| `mode` |  | enum (string) | no | `stretch` | `stretch`, `pad`, `crop` | روش تغییر اندازه: `stretch` ابعاد درخواستی را تحمیل می‌کند و ممکن است نسبت تصویر را تغییر دهد. `pad` و `crop` هر دو نسبت تصویر را حفظ می‌کنند: `pad` ویدیو را در ابعاد درخواستی جا می‌دهد و فضای خالی را با رنگ انتخاب‌شده پر می‌کند (letterboxing/pillarboxing). `crop` ابعاد درخواستی را پر می‌کند و سپس برای رسیدن به اندازه دقیق، از مرکز برش می‌دهد. |
| `pad_color` |  | enum (string) | no | `black` | `black`, `white`, `red`, `green`, `blue`, `gray` | رنگ padding در حالت `pad`؛ حالت‌های دیگر آن را نادیده می‌گیرند. |
| `codec` |  | enum (string) | no | `libx264` | `libx264`, `libx265` | کدک رمزگذاری را انتخاب کنید: برای فشرده‌سازی بهتر از libx265 (H.265/HEVC) و برای سازگاری گسترده از libx264 (H.264) استفاده کنید. |
| `preset` |  | enum (string) | no | `fast` | `ultrafast`, `fast`, `medium`, `slow` | پیش‌تنظیم کنترل‌کننده سرعت رمزگذاری. انتخاب پیش‌تنظیم کندتر فشرده‌سازی را بهبود می‌دهد اما زمان رمزگذاری را افزایش می‌دهد. |
| `crf` |  | integer | no | `18` | 0 – 51 | Constant Rate Factor کنترل‌کننده کیفیت در بازه 0–51؛ مقدار 18 برای بیشتر محتواها معمولاً بدون افت کیفیت به نظر می‌رسد. کاهش مقدار کیفیت را بهتر اما اندازه فایل را بزرگ‌تر می‌کند. |

File parameters (`video`) 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
{
  "video": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
}
```

A fuller example:

```json
{
  "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
}
```

## 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/workflow-utilities/scale-video?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  }'

# 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/workflow-utilities/scale-video?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  }),
});
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 = {
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/workflow-utilities/scale-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": "workflow-utilities/scale-video",
      "input": {
        "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
      },
      "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": "workflow-utilities/scale-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": 3600,
    "usd": "3.60",
    "charged": 3600,
    "refunded": 0
  },
  "input": {
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  },
  "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
    },
    "original_width": 1929,
    "original_height": 1082,
    "scaled_width": 1920,
    "scaled_height": 1080
  },
  "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} | ویدیو پس از مقیاس‌بندی یا تغییر اندازه. |
| `original_width` | integer | عرض ویدیوی اصلی، برحسب پیکسل. |
| `original_height` | integer | ارتفاع ویدیوی اصلی، برحسب پیکسل. |
| `scaled_width` | integer | عرض ویدیوی خروجی، برحسب پیکسل. |
| `scaled_height` | integer | ارتفاع ویدیوی خروجی، برحسب پیکسل. |

## Related models

- [Workflow Utilities Extract Nth Frame](https://doitong.com/developers/models/workflow-utilities/extract-nth-frame.md) (`workflow-utilities/extract-nth-frame`): $0.001 / second of processing time
- [Workflow Utilities Pick Image By Index](https://doitong.com/developers/models/workflow-utilities/pick-image-by-index.md) (`workflow-utilities/pick-image-by-index`): $0.001 / run
- [Workflow Utilities Auto Subtitle](https://doitong.com/developers/models/workflow-utilities/auto-subtitle.md) (`workflow-utilities/auto-subtitle`): $0.03 / minute of input video
- [Workflow Utilities Blend Video](https://doitong.com/developers/models/workflow-utilities/blend-video.md) (`workflow-utilities/blend-video`): $0.001 / second of processing time
- [Workflow Utilities Interleave Video](https://doitong.com/developers/models/workflow-utilities/interleave-video.md) (`workflow-utilities/interleave-video`): $0.00017 / second of processing time
- [Workflow Utilities Reverse Video](https://doitong.com/developers/models/workflow-utilities/reverse-video.md) (`workflow-utilities/reverse-video`): $0.001 / second of processing time
- [Workflow Utilities Trim Video](https://doitong.com/developers/models/workflow-utilities/trim-video.md) (`workflow-utilities/trim-video`): $0.001 / second of processing time
- [Workflow Utilities Audio Compressor](https://doitong.com/developers/models/workflow-utilities/audio-compressor.md) (`workflow-utilities/audio-compressor`): $0.001 / second of processing time

## Links

- HTML page: https://doitong.com/developers/models/workflow-utilities/scale-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=workflow-utilities/scale-video
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/workflow-utilities/scale-video