# Kling O1 Reference Video to Video [Standard] API

> Video-kwa-video ya kiwango cha Standard inayounda picha mpya ikiongozwa na klipu ya marejeo, ikiwa na sauti ya hiari iliyohifadhiwa

Hutumia klipu ya marejeo katika `video_url` (mp4 au mov, sekunde 3 hadi 10, 720 hadi 2160 px, hadi 200MB) na `prompt` ili kuzalisha picha mpya. Hadi `elements` 4 na `image_urls` za marejeo zinaweza kuongezwa kwa jumla. `keep_audio` huhifadhi sauti asilia. Uwiano wa picha chaguo-msingi ni auto, unaolingana na ingizo, na muda huwa sekunde 3 hadi 10.

- Model id: `kling-video/o1/standard/video-to-video/reference`
- Made by: Kling
- Category: Video to Video
- Output: video
- Price: $0.126 / second (5 s ≈ $0.63) (cheapest run $0.63 (630 API credits))
- Run: `POST https://api.doitong.ru/v1/run/kling-video/o1/standard/video-to-video/reference`
- Quote: `POST https://api.doitong.ru/v1/quote/kling-video/o1/standard/video-to-video/reference`
- Docs page: https://doitong.com/sw/developers/models/kling-video/o1/standard/video-to-video/reference

## Pricing

Price: **$0.126 / second (5 s ≈ $0.63)**. Billed per second of output (`duration`, default 10).

The full example input below costs $0.63 = 630 API credits (5 s × 126 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/kling-video/o1/standard/video-to-video/reference` 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` |  | Ukaguzi wa usalama unaweza kuzimwa tu kwa idhini ya akaunti; maombi yasiyo na idhini hukaguliwa kila wakati. |
| `prompt` |  | string | yes |  | ≤ 2500 characters | Marejeleo yaliyopangwa hutumia @Element1, @Element2, na kuendelea kwa vipengele, na @Image1, @Image2, na kuendelea kwa picha. |
| `video_url` | `video` | string (video URL) | yes |  |  | URL inayoelekeza kwenye video ya marejeleo katika umbizo la .mp4 au .mov, isiyozidi 200MB. Vipimo vyote viwili lazima viwe kati ya 720px na 2160px, kwa kasi ya fremu ya 24.0–60.0 FPS na urefu wa sekunde 3–10 (sekunde 10.05 kwa kiwango cha juu). Muda wa kusubiri ni sekunde 30.0. |
| `keep_audio` |  | boolean | no | `false` |  | Hudhibiti ikiwa sauti asilia ya video itahifadhiwa. |
| `image_urls` | `images` | array of image URL \| null | no |  |  | Picha zinazoongoza mtindo au mwonekano, zinazorejelewa kwenye kidokezo kwa kutumia @Image1, @Image2, na kuendelea. Kwa ingizo la video, vipengele na picha za marejeleo kwa pamoja haviwezi kuzidi maingizo 4. Kila faili ina kikomo cha 50 MB, huku upana na urefu kila kimoja kikiwa angalau 300 px na uwiano wa pande ukiwa kutoka 0.40 hadi 2.50. |
| `elements` |  | array of object {frontal_image_url, reference_image_urls} \| null | no |  |  | Wahusika au vitu vya kujumuisha, vinavyorejelewa kwenye kidokezo kwa kutumia @Element1, @Element2, na kuendelea. Kwa ingizo la video, vipengele na picha za marejeleo kwa pamoja haviwezi kuzidi maingizo 4. |
| `elements[].frontal_image_url` |  | string (image URL) | yes |  |  | Picha ya mbele inayotoa mwonekano mkuu wa kipengele, yenye kikomo cha 50 MB. Upana na urefu lazima kila kimoja kiwe angalau 300 px, na uwiano wa pande uwe kutoka 0.40 hadi 2.50. Muda wa kusubiri ni sekunde 20. |
| `elements[].reference_image_urls` |  | array of image URL | no |  |  | Toa picha 1–3 za ziada za marejeleo zinazoonyesha pembe tofauti. Kila picha lazima iwe na uwiano wa pande kati ya 0.40 na 2.50, iwe na angalau 300px katika vipimo vyote viwili, na isiwe kubwa kuliko 50.0MB. |
| `aspect_ratio` |  | enum (string) | no | `auto` | `auto`, `16:9`, `9:16`, `1:1` | Uwiano wa upana kwa urefu wa fremu katika video inayozalishwa. Kuchagua 'auto' huchagua kiotomatiki uwiano ulio karibu zaidi na wa video ya ingizo. |
| `duration` |  | enum (string) | no | `5` | `3`, `4`, `5`, `6`, `7`, `8`, `9`, `10` | Urefu wa video unaopimwa kwa sekunde. |

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

A fuller example:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "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/kling-video/o1/standard/video-to-video/reference?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",
    "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/kling-video/o1/standard/video-to-video/reference?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",
    "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 = {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "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/kling-video/o1/standard/video-to-video/reference", 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": "kling-video/o1/standard/video-to-video/reference",
      "input": {
        "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
        "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": "kling-video/o1/standard/video-to-video/reference",
  "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": 630,
    "usd": "0.63",
    "charged": 630,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "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
    }
  },
  "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 iliyozalishwa na modeli. |

## Related models

- [Kling O1 First Frame Last Frame to Video \[Pro\]](https://doitong.com/developers/models/kling-video/o1/image-to-video.md) (`kling-video/o1/image-to-video`): $0.112 / second
- [Kling O1 First Frame Last Frame to Video \[Standard\]](https://doitong.com/developers/models/kling-video/o1/standard/image-to-video.md) (`kling-video/o1/standard/image-to-video`): $0.084 / second
- [Kling O1 Reference Image to Video \[Pro\]](https://doitong.com/developers/models/kling-video/o1/reference-to-video.md) (`kling-video/o1/reference-to-video`): $0.112 / second
- [Kling O1 Reference Image to Video \[Standard\]](https://doitong.com/developers/models/kling-video/o1/standard/reference-to-video.md) (`kling-video/o1/standard/reference-to-video`): $0.084 / second
- [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 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

## Links

- HTML page: https://doitong.com/developers/models/kling-video/o1/standard/video-to-video/reference
- 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/o1/standard/video-to-video/reference
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/kling-video/o1/standard/video-to-video/reference