# Kling | v3 | Standard | Motion Control

Transfers motion from a reference video onto any character image, using a cost-efficient mode optimized for portraits and simple animated movements.

## API Information

- **Model Slug:** kling-v3-standard-motion-control
- **Branded URL:** https://www.eachlabs.ai/kling/kling-v3/kling-v3-standard-motion-control
- **Provider:** Kling
- **Category:** Video to Video
- **Output Type:** video
- **Status:** active
- **Base Cost:** $0.14 per second of generated video.
- **Estimated Processing Time:** 300 seconds
- **Interactive Demo:** https://www.eachlabs.ai/ai-models/kling-v3-standard-motion-control

## Pricing

- **Charge Type:** dynamic
- **Pricing Details:** $0.14 per second of generated video.

### Pricing Rules

| Condition | Pricing |
| --- | --- |
| Rule 1 | $0.14 per second of generated video. |

## Input Schema

| Parameter | Type | Required | Default | Constraints | Description |
|-----------|------|----------|---------|-------------|-------------|
| prompt | string | No | - | - | Text prompt for scene description. Can add elements to the scene or achieve camera movement effects. Max 2500 characters. |
| image_url | string | Yes | - | - | Reference image URL. Characters, background and other elements in generated video will follow this reference. Supported formats: .jpg, .jpeg, .png. Max 10MB, dimensions 300px–65536px, aspect ratio 1:2.5–2.5:1. |
| elements | array | No | - | - | Character/object elements. Each element has a frontal image and optional reference images from different angles. Reference in prompt as @Element1, @Element2. |
| video_url | string | Yes | - | - | URL of reference video whose character actions the generated video will follow. Supported formats: .mp4, .mov. Max 100MB, dimensions 340px–3850px. Duration: 3–30s (max 10s when character_orientation is 'image'). |
| character_orientation | string | Yes | video | image, video | Character orientation in generated video. 'image': match orientation from the reference image (video max 10s). 'video': match orientation from the reference video (video max 30s). |
| keep_original_sound | boolean | No | true | - | Whether to keep the original sound of the reference video. |
| element_list | array | No | - | - | Pre-created Kling element IDs to reuse. Reference in prompt as @Element1, @Element2. |

## Example Request

```bash
curl -X POST https://api.eachlabs.ai/v1/prediction/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kling-v3-standard-motion-control",
  "input": {
    "character_orientation": "video",
    "image_url": "https://cdn-us.eachlabs.ai/defaults/25978c25f6268847dcf697293aea00154d4d7ab06a7f9093b4b71ef12d5cddf9.png",
    "video_url": "https://cdn-us.eachlabs.ai/defaults/eb48fcb095cd03d4ac3bc9de3654ea778009ba9b82bff70d88098ccef5e681b4.mp4"
  }
}'
```

## Output Schema

Response returned by `GET /v1/prediction/{id}` when the job completes:

```json
{
  "status": "success",
  "predictionID": "string",
  "output": "string (URL of generated video)",
  "metrics": {
    "predict_time": "number (seconds)"
  }
}
```

## Polling

```bash
curl https://api.eachlabs.ai/v1/prediction/{PREDICTION_ID} \
  -H "Authorization: Bearer YOUR_API_KEY"
```

| Status | Meaning |
|--------|---------|
| `processing` | Still running — poll again |
| `success` | Done — read `output` |
| `error` | Failed — read `message` / `details` |

## Webhook (alternative to polling)

Pass `"webhook_url": "https://your.host/path"` in the create request. Eachlabs POSTs this payload when the job ends:

```json
{
  "exec_id": "prediction-uuid",
  "status": "succeeded",
  "output": "https://...",
  "error": ""
}
```

`status` is `"succeeded"` or `"failed"`. `exec_id` equals the `predictionID` from create. Return 2xx within 30 seconds.

## Errors

Error body: `{ "status": "error", "message": "...", "details": "..." }`

| Code | Meaning |
|------|---------|
| `400` | Invalid input |
| `401` | Missing / invalid `Authorization` bearer token |
| `404` | Unknown model or prediction id |
| `429` | Rate limit — 100 creates / min, 10 concurrent per key |
| `5xx` | Retry with backoff |

## Overview

The **Kling | v3 | Standard | Motion Control** model from Kling specializes in image-to-video generation, transforming static images into dynamic videos with precise motion control via tools like Motion Brush and Start/End Frame Interpolation. This **Kling image-to-video** solution excels in maintaining object permanence and realistic physics, solving the challenge of creating fluid, director-like animations from single images without melting artifacts or floaty movements. Part of the Kling v3 family hosted on each::labs (eachlabs.ai), it leverages the Multi-modal Visual Language (MVL) framework for unified handling of visuals and motion prompts. Its primary differentiator is advanced **Motion Control**, enabling users to paint motion vectors or define transitions for professional-grade outputs up to 15 seconds. Ideal for creators needing controlled, high-fidelity animations, the **Kling | v3 | Standard | Motion Control API** integrates seamlessly into workflows on each::labs.

## Usage Notes

- API Base URL: `https://api.eachlabs.ai/v1`
- Authentication: send `Authorization: Bearer YOUR_API_KEY`. Generate a key from the Eachlabs dashboard at https://www.eachlabs.ai/dashboard/api-keys.
- File-typed parameters (`*_url`, `image_url`, `video_url`, `audio_url`, etc.) accept publicly-reachable HTTPS URLs only. Upload your asset first (GCS / S3 / your CDN) and pass the resulting URL. Data-URIs and localhost URLs are rejected.
- For structured parameters (arrays / objects) send real JSON values, not stringified payloads.
- Monetary values are reported in USD; per-token / per-megapixel rates may be billed in micro-cents internally.
- Prefer `webhook_url` over polling for long-running predictions — see the Webhook Callback section.