Generate videos

curl -X POST https://havincy.com/api/v1/generations \
  -H "Authorization: Bearer $HAVINCY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "modality": "video",
    "model_id": "fal-kling-v3-pro",
    "prompt": "A small robot walks along a beach at sunset, cinematic tracking shot",
    "aspect_ratio": "9:16",
    "duration": 5,
    "resolution": "1080p",
    "generate_audio": true
  }'

{
  "modality": "video",
  "model_id": "fal-kling-v3-pro",
  "prompt": "The character turns and smiles, slow camera push-in",
  "reference_image_urls": ["https://example.com/portrait.jpg"],
  "duration": 5
}