# PixVerse V6 Extend API

> Ipinagpapatuloy ang kasalukuyang video nang 1 hanggang 15 segundo, ayon sa prompt na naglalarawan sa susunod na mangyayari

Tumatanggap ng source clip sa `video_url` at kinakailangang `prompt` na naglalarawan kung paano ito pahahabain. Ang `duration` ay integer mula 1 hanggang 15 segundo, at maaaring 360p, 540p, 720p o 1080p ang resolution. Maaari ring magtakda ng `negative_prompt`, `style` preset at `seed`, at paganahin ang nabuong audio.

- Model id: `pixverse/v6/extend`
- Made by: PixVerse
- Category: Video to Video
- Output: video
- Price: from $0.025 / second (5 s ≈ $0.125) (cheapest run $0.125 (125 API credits))
- Run: `POST https://api.doitong.com/v1/run/pixverse/v6/extend`
- Quote: `POST https://api.doitong.com/v1/quote/pixverse/v6/extend`
- Docs page: https://doitong.com/fil/developers/models/pixverse/v6/extend

## Pricing

Price: **from $0.025 / second (5 s ≈ $0.125)** (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 `generate_audio_switch` = true and `resolution` = 360p: $0.035 (35 API credits) / second
- When `resolution` = 360p: $0.025 (25 API credits) / second
- When `generate_audio_switch` = true and `resolution` = 540p: $0.045 (45 API credits) / second
- When `resolution` = 540p: $0.035 (35 API credits) / second
- When `generate_audio_switch` = true and `resolution` = 720p: $0.06 (60 API credits) / second
- When `resolution` = 720p: $0.045 (45 API credits) / second
- When `generate_audio_switch` = true and `resolution` = 1080p: $0.115 (115 API credits) / second
- When `resolution` = 1080p: $0.09 (90 API credits) / second

The full example input below costs $0.225 = 225 API credits (5 s × 45 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/pixverse/v6/extend` 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 |  |  | URL na tumutukoy sa video na palalawigin. |
| `prompt` |  | string | yes |  |  | Mga instruction para sa extension ng video na may limitasyon sa haba batay sa byte: maaaring lumampas sa limitasyon ang tekstong maikli sa paningin dahil maraming byte ang ginagamit ng emoji, titik na may accent, at mga character na hindi Latin. Ang maximum ay 2048 bytes na sinusukat sa UTF-8, hindi character count. |
| `negative_prompt` |  | string | no | `` |  | Negative prompt sa pagbuo na may limitasyon sa haba batay sa byte: maaaring lumampas sa limitasyon ang tekstong maikli sa paningin dahil maraming byte ang ginagamit ng emoji, titik na may accent, at mga character na hindi Latin. Ang maximum ay 2048 bytes na sinusukat sa UTF-8, hindi character count. |
| `style` |  | enum (string) \| null | no |  | `anime`, `3d_animation`, `clay`, `comic`, `cyberpunk` | Visual style para sa extension ng video. |
| `resolution` |  | enum (string) | no | `720p` | `360p`, `540p`, `720p`, `1080p` | Resolution ng output video. |
| `duration` |  | integer | no | `5` | 1 – 15 | Haba, sinusukat sa segundo, ng bubuuing video; para sa v6, ang sinusuportahang range ay 1–15 segundo. |
| `seed` |  | integer \| null | no |  |  | Seed na kumokontrol sa randomness habang bumubuo. |
| `generate_audio_switch` | `generate_audio` | boolean | no | `false` |  | Toggle ng pagbuo ng audio para sa background music, sound effect, at dialogue. |

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",
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
}
```

A fuller example:

```json
{
  "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
}
```

## 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/pixverse/v6/extend?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",
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  }'

# 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/pixverse/v6/extend?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  }),
});
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",
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/pixverse/v6/extend", 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": "pixverse/v6/extend",
      "input": {
        "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
        "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
      },
      "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": "pixverse/v6/extend",
  "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": 225,
    "usd": "0.225",
    "charged": 225,
    "refunded": 0
  },
  "input": {
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  },
  "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} | Video na nabuo sa pagpapalawig ng input. |

## Related models

- [PixVerse V6 Text To Video](https://doitong.com/developers/models/pixverse/v6/text-to-video.md) (`pixverse/v6/text-to-video`): from $0.025 / second
- [PixVerse V6 Image To Video](https://doitong.com/developers/models/pixverse/v6/image-to-video.md) (`pixverse/v6/image-to-video`): from $0.025 / second
- [PixVerse V6 Transition](https://doitong.com/developers/models/pixverse/v6/transition.md) (`pixverse/v6/transition`): from $0.025 / second
- [PixVerse Extend](https://doitong.com/developers/models/pixverse/extend.md) (`pixverse/extend`): from $0.15 / run
- [PixVerse Extend Fast](https://doitong.com/developers/models/pixverse/extend/fast.md) (`pixverse/extend/fast`): from $0.30 / run
- [AMT Interpolation](https://doitong.com/developers/models/amt-interpolation.md) (`amt-interpolation`): $0.000575 / second of processing time
- [AnimateDiff Turbo · Video to Video](https://doitong.com/developers/models/fast-animatediff/turbo/video-to-video.md) (`fast-animatediff/turbo/video-to-video`): $0.00125 / second of processing time
- [AnimateDiff · Video to Video](https://doitong.com/developers/models/fast-animatediff/video-to-video.md) (`fast-animatediff/video-to-video`): $0.00125 / second of processing time

## Links

- HTML page: https://doitong.com/developers/models/pixverse/v6/extend
- 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=pixverse/v6/extend
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.com/v1/models/pixverse/v6/extend