Set the `EACHLABS_API_KEY` environment variable. Get your key at [eachlabs.ai](https://eachlabs.ai).

## Model Selection Guide

### Video Extension

| Model | Slug | Best For |
|-------|------|----------|
| Veo 3.1 Extend | `veo3-1-extend-video` | Best quality extension |
| Veo 3.1 Fast Extend | `veo3-1-fast-extend-video` | Fast extension |
| PixVerse v5 Extend | `pixverse-v5-extend` | PixVerse extension |
| PixVerse v4.5 Extend | `pixverse-v4-5-extend` | Older PixVerse extension |

### Lip Sync & Talking Head

| Model | Slug | Best For |
|-------|------|----------|
| Sync Lipsync v2 Pro | `sync-lipsync-v2-pro` | Best lip sync quality |
| PixVerse Lip Sync | `pixverse-lip-sync` | PixVerse lip sync |
| LatentSync | `latentsync` | Open-source lip sync |
| Video Retalking | `video-retalking` | Audio-based lip sync |

### Video Transformation

| Model | Slug | Best For |
|-------|------|----------|
| Runway Gen4 Aleph | `runway-gen4-aleph` | Video transformation |
| Kling O1 Video Edit | `kling-o1-video-to-video-edit` | AI video editing |
| Kling O1 V2V Reference | `kling-o1-video-to-video-reference` | Reference-based edit |
| ByteDance Video Stylize | `bytedance-video-stylize` | Style transfer |
| Wan v2.2 Animate Move | `wan-v2-2-14b-animate-move` | Motion animation |
| Wan v2.2 Animate Replace | `wan-v2-2-14b-animate-replace` | Object replacement |

### Video Upscaling & Enhancement

| Model | Slug | Best For |
|-------|------|----------|
| Topaz Upscale Video | `topaz-upscale-video` | Best quality upscale |
| Luma Ray 2 Video Reframe | `luma-dream-machine-ray-2-video-reframe` | Video reframing |
| Luma Ray 2 Flash Reframe | `luma-dream-machine-ray-2-flash-video-reframe` | Fast reframing |

### Audio & Subtitles

| Model | Slug | Best For |
|-------|------|----------|
| FFmpeg Merge Audio Video | `ffmpeg-api-merge-audio-video` | Merge audio track |
| MMAudio V2 | `mm-audio-v-2` | Add audio to video |
| MMAudio | `mmaudio` | Add audio to video |
| Auto Subtitle | `auto-subtitle` | Generate subtitles |
| Merge Videos | `merge-videos` | Concatenate videos |

### Video Translation

| Model | Slug | Best For |
|-------|------|----------|
| Heygen Video Translate | `heygen-video-translate` | Translate video speech |

### Motion Transfer

| Model | Slug | Best For |
|-------|------|----------|
| Motion Fast | `motion-fast` | Fast motion transfer |
| Infinitalk V2V | `infinitalk-video-to-video` | Talking head from video |

### Face Swap (Video)

| Model | Slug | Best For |
|-------|------|----------|
| Faceswap Video | `faceswap-video` | Swap face in video |

## Prediction Flow

1. **Check model** `GET https://api.eachlabs.ai/v1/model?slug=<slug>` — validates the model exists and returns the `request_schema` with exact input parameters. Always do this before creating a prediction to ensure correct inputs.
2. **POST** `https://api.eachlabs.ai/v1/prediction` with model slug, version `"0.0.1"`, and input matching the schema
3. **Poll** `GET https://api.eachlabs.ai/v1/prediction/{id}` until status is `"success"` or `"failed"`
4. **Extract** the output video URL from the response

## Examples

### Extend a Video with Veo 3.1

curl -X POST https://api.eachlabs.ai/v1/prediction \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -d '{
    "model": "veo3-1-extend-video",
    "version": "0.0.1",
    "input": {
      "video_url": "https://example.com/video.mp4",
      "prompt": "Continue the scene with the camera slowly pulling back"
    }
  }'

curl -X POST https://api.eachlabs.ai/v1/prediction \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -d '{
    "model": "sync-lipsync-v2-pro",
    "version": "0.0.1",
    "input": {
      "video_url": "https://example.com/talking-head.mp4",
      "audio_url": "https://example.com/new-audio.mp3"
    }
  }'

curl -X POST https://api.eachlabs.ai/v1/prediction \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -d '{
    "model": "auto-subtitle",
    "version": "0.0.1",
    "input": {
      "video_url": "https://example.com/video.mp4"
    }
  }'

curl -X POST https://api.eachlabs.ai/v1/prediction \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -d '{
    "model": "ffmpeg-api-merge-audio-video",
    "version": "0.0.1",
    "input": {
      "video_url": "https://example.com/video.mp4",
      "audio_url": "https://example.com/music.mp3",
      "start_offset": 0
    }
  }'

curl -X POST https://api.eachlabs.ai/v1/prediction \
  -H "Content-Type: application/json" \
  -H "X-API-Key: $EACHLABS_API_KEY" \
  -d '{
    "model": "topaz-upscale-video",
    "version": "0.0.1",
    "input": {
      "video_url": "https://example.com/low-res-video.mp4"
    }
  }'