# KwaiVGI Kling V3 Pro Motion Control API

> Kling V3 Pro Motion Control by Kuaishou transfers the motion, expressions, and camera movement of a reference video onto the character in an image, producing a 1080p video up to 30 seconds.

Source: https://www.sandbase.ai/models/kwaivgi/kling-video/v3/pro/motion-control
API reference: https://www.sandbase.ai/models/kwaivgi/kling-video/v3/pro/motion-control/docs

## Facts

- Provider: KwaiVGI
- Type: Video model
- Model ID: `kwaivgi/kling-video/v3/pro/motion-control`
- Price: From $0.59 per run (30% off list price)
- Capabilities: video to video
- Billing: pay per use from one SandBase balance; no provider account or subscription needed

## Call it

- Unified Run API: `POST https://api.sandbase.ai/v1/run`

```bash
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kwaivgi/kling-video/v3/pro/motion-control",
  "image": "https://static.sandbase.ai/examples/mirrored/f77b827ca02a-TNErq9yD7ZxGRATjfAqnh_EIgJSN67.png",
  "video": "https://static.sandbase.ai/examples/mirrored/f1ecbb471a16-hklvF__w53diz6Rve7f5__JuDW2xl0mr6sJ_Kjz3Vxe_vidoeook--1-_1.mp4",
  "prompt": "A man dancing",
  "keep_original_sound": true,
  "character_orientation": "image"
}'
```

The response returns a run id; poll `GET https://api.sandbase.ai/v1/run/{id}` until the status is `completed` or `failed`.

## FAQ

### How do I call KwaiVGI Kling V3 Pro Motion Control through SandBase?

Create a SandBase API key, then send requests with the model ID "kwaivgi/kling-video/v3/pro/motion-control" to Unified Run API (/v1/run) at https://api.sandbase.ai. The request examples on this page show the exact payload.

### Do I need a separate KwaiVGI account?

No. One SandBase API key and balance gives you access to KwaiVGI Kling V3 Pro Motion Control and the other models in the catalog; you do not need to sign up with KwaiVGI separately.

## README

### Kling V3 Pro Motion Control

Kling V3 Pro motion control: make the character in `image` perform the moves of a reference `video`, with body, hands, and expression following the source.

#### Fields

| Field | Type | Default | Notes |
|---|---|---|---|
| `prompt` | string | — | Optional scene and style direction. |
| `image` | image URL, required | — | Character to animate. JPEG, PNG, or WebP URL. |
| `video` | video URL, required | — | Reference video that supplies the motion. |
| `keep_original_sound` | boolean | true | Keep the reference video's audio track. |
| `character_orientation` | `image` / `video` | — | `video` follows the reference video's orientation (better for complex moves, up to 30s); `image` follows the image (better for camera moves, up to 10s). |

#### Billing

You pay $0.168 per second of the reference video. The quote before submission assumes 30 seconds; the final charge uses the measured length.

| Reference video | Price |
|---|---|
| 5s reference | $0.84 |
| 10s reference | $1.68 |
| 30s reference | $5.04 |

Failed runs are not charged.

#### Prompting

- Use a character image whose framing matches the person in the video.
- Pick `character_orientation` by what matters more: complex moves (`video`) or camera moves (`image`).

#### Limits

- Up to 30 seconds with `character_orientation: video`, 10 seconds with `image`.

#### Also on SandBase

Other Kling V3 Pro endpoints and tiers: `kwaivgi/kling-video/v3/pro/text-to-video`, `kwaivgi/kling-video/v3/pro/image-to-video`, `kwaivgi/kling-video/v3/standard/motion-control`.