# Auto-Captioner API

> قابلِ ترتیب رنگ، فونٹ، سائز اور مقام کے ساتھ ویڈیو میں تقریر پر مبنی کیپشن شامل کرتا ہے

.mp4 `video_url` (400MB سے کم) سے آڈیو کی ٹرانسکرپشن کرتا ہے اور کیپشن ویڈیو میں شامل کرتا ہے۔ `txt_color`، `txt_font`، `font_size`، `stroke_width` اور `text_case` سے انداز مقرر کریں۔ پوزیشن `left_align` اور `top_align` استعمال کرتی ہے۔ 0.5 سے 3 سیکنڈ کا `refresh_interval` مقرر کرتا ہے کہ کیپشن اسکرین پر کتنی دیر رہیں۔

- Model id: `auto-caption`
- Made by: Utility
- Category: Video to Video
- Output: json
- Price: $0.10 / video (cheapest run $0.10 (100 API credits))
- Run: `POST https://api.doitong.com/v1/run/auto-caption`
- Quote: `POST https://api.doitong.com/v1/quote/auto-caption`
- Docs page: https://doitong.com/ur/developers/models/auto-caption

## Pricing

Price: **$0.10 / video**. Billed once per generated video.

The full example input below costs $0.10 = 100 API credits (1 video × 100 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.com/v1/quote/auto-caption` 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 |
|---|---|---|---|---|---|---|
| `video_url` | `video` | string (video URL) | yes |  |  | آڈیو پر مشتمل .mp4 فائل کا ویڈیو URL، سائز 400 MB سے کم۔ |
| `txt_color` |  | string | no | `white` |  | متن کا رنگ hexadecimal notation، RGB tuple یا رنگ کے نام سے مقرر کریں۔ |
| `txt_font` |  | string | no | `Standard` |  | caption کا typeface کسی .ttf فائل کی طرف اشارہ کرنے والے URL یا built-in font سے مقرر کریں: 'Arial'، 'Standard'، 'Garamond'، 'Times New Roman' یا 'Georgia'۔ |
| `font_size` |  | integer | no | `24` |  | تخلیق کردہ captions کا متن سائز۔ |
| `stroke_width` |  | integer | no | `1` |  | متن کے stroke کی موٹائی، pixels میں۔ |
| `left_align` |  | string \| number | no | `center` |  | متن کو افقی طور پر 0.0 اور 1.0 کے درمیان float سے align کریں، یا نامزد پوزیشن 'left'، 'center' یا 'right' منتخب کریں۔ |
| `top_align` |  | string \| number | no | `center` |  | متن کو عمودی طور پر 0.0 اور 1.0 کے درمیان float سے align کریں، یا نامزد پوزیشن 'top'، 'center' یا 'bottom' منتخب کریں۔ |
| `refresh_interval` |  | number | no | `1.5` | 0.5 – 3 | اس کے display interval کے دوران بیک وقت ظاہر ہونے والے caption متن کی مقدار کنٹرول کریں، سیکنڈ میں: captions کو زیادہ دیر دکھانے سے ایک وقت میں زیادہ متن ظاہر ہوتا ہے۔ |
| `text_case` |  | enum (string) | no | `default` | `default`, `upper`, `lower` | subtitle casing کو speech recognition کے مطابق برقرار رکھنے کے لیے 'default' منتخب کریں۔ تبدیل کرنے کے لیے uppercase متن کے لیے 'upper' یا lowercase متن کے لیے 'lower' منتخب کریں۔ |

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.com/v1/run/auto-caption?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.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.com/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/auto-caption?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.com/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/auto-caption", 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.com/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": "auto-caption",
      "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": "auto-caption",
  "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": 100,
    "usd": "0.10",
    "charged": 100,
    "refunded": 0
  },
  "input": {
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  },
  "output": {
    "video_url": "string"
  },
  "outputs": [
    {
      "type": "file",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_size": 1843200,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `video_url` | string (video URL) | captioned .mp4 ویڈیو کی طرف اشارہ کرنے والا URL۔ |

## Related models

- [FFmpeg API Compose](https://doitong.com/developers/models/ffmpeg-api/compose.md) (`ffmpeg-api/compose`): $0.001 / run
- [Ffmpeg Api Merge Audio-Video](https://doitong.com/developers/models/ffmpeg-api/merge-audio-video.md) (`ffmpeg-api/merge-audio-video`): $0.0002 / second of input video
- [Ffmpeg Api · Merge Videos](https://doitong.com/developers/models/ffmpeg-api/merge-videos.md) (`ffmpeg-api/merge-videos`): $0.00017 / second of processing time
- [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 Scale Video](https://doitong.com/developers/models/workflow-utilities/scale-video.md) (`workflow-utilities/scale-video`): $0.001 / second of processing time

## Links

- HTML page: https://doitong.com/developers/models/auto-caption
- 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=auto-caption
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.com/v1/models/auto-caption