# Kling Video · v3 · Pro · Motion Control API

> 참조 비디오의 캐릭터 동작을 캐릭터 이미지에 적용하는 Pro 등급 동작 전이

`image_url`의 캐릭터 이미지와 `video_url`의 참조 비디오 동작을 결합합니다. `character_orientation`은 필수이며 방향을 이미지 또는 비디오 중 무엇에 맞출지 선택합니다. 최대 2500자의 선택적 `prompt`를 지원하고, `keep_original_sound`는 참조 오디오를 유지하며, `elements`를 통해 얼굴 요소 하나를 연결해 인물의 동일성을 보존할 수 있습니다.

- Model id: `kling-video/v3/pro/motion-control`
- Made by: Kling
- Category: Video to Video
- Output: video
- Price per second of your input video: $0.168 / second of input video (cheapest run $0.168 (168 API credits))
- Run: `POST https://api.doitong.com/v1/run/kling-video/v3/pro/motion-control`
- Quote: `POST https://api.doitong.com/v1/quote/kling-video/v3/pro/motion-control`
- Docs page: https://doitong.com/ko/developers/models/kling-video/v3/pro/motion-control

## Pricing

Price: **$0.168 / second of input video**. Price per second of your input video: the input files are measured before the run (length, resolution, frame rate). The quote measures the same files and is exactly what the run charges.

The full example input below costs $1.68 = 1680 API credits (10 s input video × $0.168).

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/kling-video/v3/pro/motion-control` 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 |
|---|---|---|---|---|---|---|
| `enable_safety_checker` |  | boolean | no | `true` |  | 안전 검사는 계정 인증이 있을 때만 비활성화할 수 있으며, 인증되지 않은 요청에는 항상 검사가 적용됩니다. |
| `prompt` |  | string \| null | no |  | ≤ 2500 characters |  |
| `image_url` | `image` | string (image URL) | yes |  |  | 동영상 생성용 참조 이미지 URL입니다. 파일 크기는 10.0MB 이하, 너비와 높이는 각각 340px~3850px, 가로세로 비율은 0.40~2.50이어야 합니다. 이 이미지는 동영상의 캐릭터, 배경 및 기타 요소를 안내합니다. 캐릭터의 경우 신체 비율이 명확하고 가려짐이 없으며 이미지 영역의 5%를 초과하도록 표시되어야 합니다. |
| `video_url` | `video` | string (video URL) | yes |  |  | 캐릭터의 동작을 안내하는 동영상을 가리키는 URL입니다. 방해 요소가 없는 사실적인 스타일의 캐릭터가 머리와 전신 또는 상반신을 보이도록 해야 합니다. character_orientation 설정에 따라 'image'는 길이가 10s, 'video'는 30s로 제한됩니다. 파일 제한: 최대 100 MB, 너비와 높이 각각 340px~3850px, 길이 3.0s~30.05s입니다. |
| `keep_original_sound` |  | boolean | no | `true` |  | 참조 동영상의 원본 사운드를 유지할지 제어합니다. |
| `character_orientation` |  | enum (string) | yes |  | `image`, `video` | 캐릭터 방향 소스입니다. 'image'는 참조 이미지와 일치하며 카메라 움직임을 따르는 데 적합하고 최대 10초입니다. 복잡한 동작에는 'video'가 적합하며 참조 동영상의 방향과 일치하고 최대 30초를 허용합니다. |
| `elements` |  | array of object {frontal_image_url, reference_image_urls} \| null | no |  |  | 출력 동영상의 동일성 보존을 개선하는 선택적 얼굴 요소 바인딩이며, 업로드 요소 1개로 제한됩니다. 프롬프트에서 @Element1로 지정합니다. 바인딩은 character_orientation이 'video'로 설정된 경우에만 사용할 수 있습니다. |
| `elements[].frontal_image_url` |  | string (image URL) \| null | no |  |  | 요소의 주요 모습을 보여 주는 정면 이미지입니다. 파일 크기는 50 MB 이하여야 하며 너비와 높이는 각각 300px 이상, 가로세로 비율은 0.40~2.50이어야 합니다. |
| `elements[].reference_image_urls` |  | array of image URL \| null | no |  |  | 서로 다른 각도를 보여 주는 추가 참조 이미지 1~3개를 제공합니다. 각 이미지의 가로세로 비율은 0.40~2.50, 두 치수는 각각 300px 이상, 파일 크기는 50.0MB 이하여야 합니다. |

File parameters (`image`, `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
{
  "image": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
  "video": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
  "character_orientation": "image"
}
```

A fuller example:

```json
{
  "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
  "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
  "character_orientation": "image"
}
```

## 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/kling-video/v3/pro/motion-control?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "character_orientation": "image"
  }'

# 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/kling-video/v3/pro/motion-control?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "character_orientation": "image"
  }),
});
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 = {
    "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "character_orientation": "image",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/kling-video/v3/pro/motion-control", 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": "kling-video/v3/pro/motion-control",
      "input": {
        "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
        "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
        "character_orientation": "image"
      },
      "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": "kling-video/v3/pro/motion-control",
  "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": 1680,
    "usd": "1.68",
    "charged": 1680,
    "refunded": 0
  },
  "input": {
    "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "character_orientation": "image"
  },
  "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
    }
  },
  "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.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `video` | object {url, content_type, file_name, file_size} | 모델이 생성한 동영상입니다. |

## Related models

- [Kling Video · v3 · Standard · Motion Control](https://doitong.com/developers/models/kling-video/v3/standard/motion-control.md) (`kling-video/v3/standard/motion-control`): $0.126 / second of input video
- [Kling O1 Edit Video \[Pro\]](https://doitong.com/developers/models/kling-video/o1/video-to-video/edit.md) (`kling-video/o1/video-to-video/edit`): $0.168 / second of input video
- [Kling O1 Edit Video \[Standard\]](https://doitong.com/developers/models/kling-video/o1/standard/video-to-video/edit.md) (`kling-video/o1/standard/video-to-video/edit`): $0.126 / second of input video
- [Kling O1 Reference Video to Video \[Pro\]](https://doitong.com/developers/models/kling-video/o1/video-to-video/reference.md) (`kling-video/o1/video-to-video/reference`): $0.168 / second
- [Kling O1 Reference Video to Video \[Standard\]](https://doitong.com/developers/models/kling-video/o1/standard/video-to-video/reference.md) (`kling-video/o1/standard/video-to-video/reference`): $0.126 / second
- [Kling O3 Edit Video \[Pro\]](https://doitong.com/developers/models/kling-video/o3/pro/video-to-video/edit.md) (`kling-video/o3/pro/video-to-video/edit`): $0.168 / second of input video
- [Kling O3 Edit Video \[Standard\]](https://doitong.com/developers/models/kling-video/o3/standard/video-to-video/edit.md) (`kling-video/o3/standard/video-to-video/edit`): $0.126 / second of input video
- [Kling O3 Reference Video to Video \[Pro\]](https://doitong.com/developers/models/kling-video/o3/pro/video-to-video/reference.md) (`kling-video/o3/pro/video-to-video/reference`): $0.168 / second

## Links

- HTML page: https://doitong.com/developers/models/kling-video/v3/pro/motion-control
- 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=kling-video/v3/pro/motion-control
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.com/v1/models/kling-video/v3/pro/motion-control