ClawVideo Generation

1. **JSON2Video API Key**: Sign up at https://json2video.com/get-api-key/
2. **Set Environment Variable**:
   ```bash
   export JSON2VIDEO_API_KEY="your_api_key_here"
   ```

## Quick Start

Create a video using a JSON configuration file:

```bash
python3 scripts/generate_video.py --config my-video.json --wait
```

## Configuration Format

The video is defined as an array of scenes. Each scene contains:

| Property | Type | Description |
|----------|------|-------------|
| `image` | object | Image configuration (AI-generated or URL) |
| `voice` | object | Voice configuration (generated TTS or URL) |
| `text_overlay` | string | Optional text displayed on scene |
| `subtitles` | boolean | Enable/disable subtitles |
| `zoom_effect` | boolean | Add Ken Burns zoom effect |
| `duration` | number | Override scene duration (seconds) |

### Image Configuration

**AI-Generated Image:**
```json
{
  "image": {
    "source": "ai",
    "ai_provider": "flux-schnell",
    "ai_prompt": "A minimalist workspace with laptop..."
  }
}
```

**Available AI Providers:**
- `flux-pro` - Highest quality, realistic images
- `flux-schnell` - Fast generation, good quality
- `freepik-classic` - Digital artwork style

**URL-Based Image:**
```json
{
  "image": {
    "source": "https://example.com/image.jpg"
  }
}
```

### Voice Configuration

**AI-Generated Voice (TTS):**
```json
{
  "voice": {
    "source": "generated",
    "text": "Your voiceover text here",
    "voice_id": "en-US-EmmaMultilingualNeural",
    "model": "azure"
  }
}
```

**Provided Audio File:**
```json
{
  "voice": {
    "source": "https://example.com/voiceover.mp3"
  }
}
```

**Note on Scene Duration**: The voiceover determines scene length automatically. Each scene's duration matches its audio length. For provided audio files, ensure they match your intended scene timing.

### Complete Example

```json
{
  "resolution": "instagram-story",
  "quality": "high",
  "cache": true,
  "scenes": [
    {
      "image": {
        "source": "ai",
        "ai_provider": "flux-schnell",
        "ai_prompt": "Affiliate marketing workspace with laptop and coffee"
      },
      "voice": {
        "source": "generated",
        "text": "Here's how to make money with affiliate marketing",
        "voice_id": "en-US-Neural2-F"
      },
      "text_overlay": "Affiliate Marketing 101",
      "subtitles": true,
      "zoom_effect": true
    }
  ]
}
```

## Advanced: Split Long Voiceover into Scenes

For long scripts, split into multiple scenes with shorter voice segments:

```json
{
  "scenes": [
    {
      "image": { "source": "ai", "ai_prompt": "Hook image" },
      "voice": { "source": "generated", "text": "Attention-grabbing hook..." },
      "zoom_effect": true
    },
    {
      "image": { "source": "ai", "ai_prompt": "Step 1 image" },
      "voice": { "source": "generated", "text": "Step one is to..." },
      "zoom_effect": true
    },
    {
      "image": { "source": "ai", "ai_prompt": "CTA image" },
      "voice": { "source": "generated", "text": "Click the link in bio..." },
      "zoom_effect": false
    }
  ]
}
```

## Command Reference

**Create video from config:**
```bash
python3 scripts/generate_video.py --config video.json --wait
```

**Create without waiting:**
```bash
python3 scripts/generate_video.py --config video.json --no-wait
```

**Check status of existing project:**
```bash
python3 scripts/generate_video.py --project-id YOUR_PROJECT_ID
```

## Resolution Options

| Resolution | Dimensions | Use Case |
|------------|------------|----------|
| `instagram-story` | 1080x1920 | **Pinterest/Reels/Stories** (recommended) |
| `instagram-feed` | 1080x1080 | Square posts |
| `full-hd` | 1920x1080 | Landscape YouTube |
| `hd` | 1280x720 | Standard HD |
| `custom` | Any | Custom dimensions |

## Voice Models & IDs

### Azure (Default - FREE, no credits consumed)

**Voice format:** `en-US-EmmaMultilingualNeural`

Common Azure voices:
- `en-US-EmmaMultilingualNeural` - Female, natural (recommended)
- `en-US-GuyNeural` - Male, professional
- `en-US-JennyNeural` - Female, friendly
- `en-GB-SoniaNeural` - British female
- `en-GB-RyanNeural` - British male

See [Microsoft Azure Speech Voices](https://learn.microsoft.com/en-us/azure/ai-services/speech-service/language-support?tabs=tts) for full list.

### ElevenLabs (Premium - consumes credits)

**Voice names:** Natural names like `Bella`, `Antoni`, `Nova`, `Shimmer`

Available voices: Daniel, Serena, Antoni, Bella, Nova, Shimmer, and more.

See [ElevenLabs Voice Library](https://elevenlabs.io/app/voice-library) for full list.

## Security

- **API Key is NEVER stored in skill files**
- API key must be set as environment variable `JSON2VIDEO_API_KEY`
- Script validates key exists before any API calls

## Example Files

- `scripts/example-config.json` - Basic example with one scene
- `scripts/example-advanced.json` - Multi-scene affiliate marketing video

## Advanced Usage

See [ADVANCED.md](ADVANCED.md) for:
- Multi-scene video architecture patterns
- Image source strategies (AI vs URL vs hybrid)
- Voiceover patterns and best practices
- Subtitle styling options
- Pinterest-specific content tips
- Batch processing workflows
- Credit consumption optimization

## Troubleshooting

**Error: "JSON2VIDEO_API_KEY environment variable not set"**
→ Run: `export JSON2VIDEO_API_KEY="your_key"`

**Error: "Render failed"**
→ Check: Image URLs are publicly accessible
→ Check: AI prompts don't violate content policies
→ Check: Audio files are valid MP3/WAV

**Video takes too long**
→ Enable `cache: true` in config
→ Use `flux-schnell` instead of `flux-pro` for faster generation
→ Pre-generate AI images and use URLs instead

## Python API Usage

For programmatic use in other scripts:

```python
from scripts.generate_video import create_pinterest_video

scenes = [
    {
        "image": {"source": "ai", "ai_prompt": "..."},
        "voice": {"source": "generated", "text": "..."},
        "subtitles": True,
        "zoom_effect": True
    }
]

video_url = create_pinterest_video(scenes, wait=True)
print(f"Video ready: {video_url}")
```