# Live Portrait API

> Animerer et portrætbillede med ansigtsudtryk fra en styrende video og giver detaljeret kontrol over ansigtet

Overfører ansigtsbevægelser fra en styrende video til et stillestående portræt og producerer en video. Ud over `video_url` og `image_url` tilbyder den numeriske kontroller for blink, øjenbryn, blink med ét øje, pupiller, mundformer (aaa, eee, woo), smil og hovedrotation i pitch, yaw og roll. Beskærings- og stitching-indstillinger som `flag_do_crop` og `flag_pasteback` er tilgængelige, og `dsize` angiver outputstørrelsen (standard 512).

- Model id: `live-portrait`
- Made by: Kuaishou
- Category: Lipsync & Avatars
- Output: video
- Charged by usage (up to $4.50 per run, typical $0.045; the rest of the hold is refunded): $0.00125 / second of processing time (cheapest run $0.045 (45 API credits))
- Run: `POST https://api.doitong.com/v1/run/live-portrait`
- Quote: `POST https://api.doitong.com/v1/quote/live-portrait`
- Docs page: https://doitong.com/da/developers/models/live-portrait

## Pricing

Price: **$0.00125 / second of processing time**. Charged by actual usage at $0.00125 / second of processing time: up to $4.50 per run (the quote gives the maximum for your input), the rest is refunded automatically after the run. A typical run costs $0.045.

The full example input below holds up to $4.50 = 4500 API credits (up to 3600 s of processing time × $0.00125) when it starts; a typical run costs $0.045 (45 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.com/v1/quote/live-portrait` 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 |  |  | Video-URL, der bruges til at styre læbesynkronisering. |
| `image_url` | `image` | string (image URL) | yes |  |  | Billed-URL til animation. |
| `blink` |  | number | no | `0` | -30 – 30 | Grad af øjenblink. |
| `eyebrow` |  | number | no | `0` | -30 – 30 | Grad af hævning eller sænkning af øjenbryn. |
| `wink` |  | number | no | `0` | 0 – 25 | Grad af blinken med ét øje. |
| `pupil_x` |  | number | no | `0` | -45 – 45 | Mængde af vandret pupilbevægelse. |
| `pupil_y` |  | number | no | `0` | -45 – 45 | Mængde af lodret pupilbevægelse. |
| `aaa` |  | number | no | `0` | -200 – 200 | Grad af mundåbning i 'aaa'-form. |
| `eee` |  | number | no | `0` | -40 – 40 | Grad af mundformning til 'eee'-positionen. |
| `woo` |  | number | no | `0` | -100 – 100 | Grad af mundformning til 'woo'-positionen. |
| `smile` |  | number | no | `0` | -2 – 2 | Grad af smil. |
| `flag_lip_zero` |  | boolean | no | `true` |  | Lukning af læber før animation, kun relevant når både flag_eye_retargeting og flag_lip_retargeting er sat til False. |
| `rotate_pitch` |  | number | no | `0` | -45 – 45 | Mængde af ansigtsrotation langs pitch-aksen. |
| `rotate_yaw` |  | number | no | `0` | -45 – 45 | Mængde af ansigtsrotation langs yaw-aksen. |
| `rotate_roll` |  | number | no | `0` | -45 – 45 | Mængde af ansigtsrotation langs roll-aksen. |
| `flag_eye_retargeting` |  | boolean | no | `false` |  | Skift til retargeting af øjne. |
| `flag_lip_retargeting` |  | boolean | no | `false` |  | Skift til retargeting af læber. |
| `flag_stitching` |  | boolean | no | `true` |  | Skift til stitching; det anbefales at aktivere den. |
| `flag_relative` |  | boolean | no | `true` |  | Skift til relativ bevægelse. |
| `flag_pasteback` |  | boolean | no | `true` |  | Indstilling for paste-back/stitching, der placerer det animerede ansigtsudsnit i det originale billede og kortlægger det ud af ansigtsudsnittets koordinater. |
| `flag_do_crop` |  | boolean | no | `true` |  | Styrer, om kildeportrættet beskæres til koordinatrummet for ansigtsudsnittet. |
| `flag_do_rot` |  | boolean | no | `true` |  | Styrer, om rotation udføres, når flag_do_crop er true. |
| `dsize` |  | integer | no | `512` |  | Dimensioner for det resulterende billede. |
| `scale` |  | number | no | `2.3` |  | Skaleringsmultiplikator anvendt på ansigtsudsnittet. |
| `vx_ratio` |  | number | no | `0` |  | Forhold, der styrer den vandrette forskydning af ansigtsudsnittet. |
| `vy_ratio` |  | number | no | `-0.125` |  | Lodret positioneringsforhold for ansigtsudsnittet: fortegnet bestemmer retningen, opad for positive værdier og nedad for negative værdier. |
| `batch_size` |  | integer | no | `32` |  | Batchstørrelse for modellen med afvejning mellem hastighed og hukommelse: en forøgelse bruger mere hukommelse til gengæld for hurtigere kørsel. |
| `enable_safety_checker` |  | boolean | no | `false` |  | Styrer, om sikkerhedskontrol er aktiveret. Når den er aktiv, behandler kontrollen inputbilledet for at verificere, at det indeholder et ansigt, før modellen behandles. |

File parameters (`video`, `image`) 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",
  "image": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg"
}
```

A fuller example:

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

## 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/live-portrait?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",
    "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg"
  }'

# 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/live-portrait?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg"
  }),
});
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",
    "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/live-portrait", 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": "live-portrait",
      "input": {
        "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
        "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg"
      },
      "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": "live-portrait",
  "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": 4500,
    "usd": "4.50",
    "charged": 4500,
    "refunded": 0
  },
  "input": {
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
    "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg"
  },
  "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} | Videofil produceret ved generering. |

## Related models

- [Live Portrait · Image](https://doitong.com/developers/models/live-portrait/image.md) (`live-portrait/image`): $0.00125 / second of processing time
- [Kling AI Avatar 2.0 Pro](https://doitong.com/developers/models/kling-video/ai-avatar/v2/pro.md) (`kling-video/ai-avatar/v2/pro`): $0.115 / second of input audio
- [Sync Lipsync 3](https://doitong.com/developers/models/sync-lipsync/v3.md) (`sync-lipsync/v3`): $8.00 / minute of output video
- [VEED Fabric 1.0](https://doitong.com/developers/models/veed/fabric-1.0.md) (`veed/fabric-1.0`): from $0.08 / second of input audio
- [AI Avatar Multi](https://doitong.com/developers/models/ai-avatar/multi.md) (`ai-avatar/multi`): from $0.20 / second of output video
- [AI Avatar Multi Text](https://doitong.com/developers/models/ai-avatar/multi-text.md) (`ai-avatar/multi-text`): from $0.648 / run
- [AI Avatar Single Text](https://doitong.com/developers/models/ai-avatar/single-text.md) (`ai-avatar/single-text`): from $4.688 / run
- [Avatar X](https://doitong.com/developers/models/mirage-api/avatar-x/text-to-video.md) (`mirage-api/avatar-x/text-to-video`): $54.00 / run

## Links

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