# Motion Video | 1.3B

Animation is a pose-guided video model that brings characters to life from a single reference image, allowing flexible, alignment-free motion transfer across a wide range of styles and scenes.

## API Information

- **Model Slug:** motion-video-1-3b
- **Branded URL:** https://www.eachlabs.ai/eachlabs/motion/motion-video-1-3b
- **Provider:** each::labs
- **Category:** Image to Video
- **Output Type:** video
- **Status:** active
- **Base Cost:** $0.03–$0.06 per second, depending on resolution
- **Interactive Demo:** https://www.eachlabs.ai/ai-models/motion-video-1-3b

## Pricing

- **Charge Type:** dynamic
- **Estimate:** $0.03–$0.06 per second, depending on resolution
- **Pricing Details:** 720p: $0.06
- **Pricing Details:** 580p: $0.045
- **Pricing Details:** default: $0.03

## Input Schema

| Parameter | Type | Required | Default | Constraints | Description |
|-----------|------|----------|---------|-------------|-------------|
| prompt | string | Yes | - | - | Text prompt describing the desired animation. |
| negative_prompt | string | Yes | - | - | Text describing what to avoid in the output. |
| image_url | string | Yes | - | - | URL of the source image. |
| video_url | string | Yes | - | - | URL of the reference motion video. |
| resolution | string | No | 480p | 480p, 580p, 720p | Output video resolution. Default: 480p. |
| num_inference_steps | integer | No | 30 | - | Number of denoising steps. Default: 30. |
| image_guidance_scale | number | No | 2 | - | Image guidance scale. Default: 2. |
| pose_guidance_scale | number | No | 1.5 | - | Pose guidance scale. Default: 1.5. |

## 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": "motion-video-1-3b",
  "input": {
    "image_url": "https://cdn-us.eachlabs.ai/defaults/a2e1e94e500875f6d65412a90a05e1e27ebc67987760726147a15280096e690e.png",
    "negative_prompt": "black background, Aerial view, aerial view, overexposed, low quality, deformation, a poor composition, bad hands, bad teeth, bad eyes, bad limbs, distortion",
    "prompt": "A robot dancing",
    "video_url": "https://cdn-us.eachlabs.ai/defaults/8ef509f423998e60b4e887bf4102d88b710e599a1a32dfadbdfdb9f8ce02530d.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

**motion-video-1.3b — Image-to-Video AI Model**

Developed by Eachlabs as part of the motion family, motion-video-1.3b is a pose-guided image-to-video generator that transforms static reference images into animated video sequences. This AI image-to-video model solves a critical problem for creators: generating natural, fluid character animation without requiring frame-by-frame alignment or complex motion capture data. Whether you're building character animations, creating marketing content, or developing interactive applications, motion-video-1.3b delivers alignment-free motion transfer that works across photorealistic, illustrated, and stylized imagery.

The model's core strength lies in its flexibility — it accepts a single reference image and motion guidance, then generates coherent video output without the rigid spatial constraints that limit competing solutions. This makes motion-video-1.3b ideal for developers and creators seeking an AI video generation tool that prioritizes ease of use without sacrificing output quality.

## 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.