curl -X POST 'https://api.acedata.cloud/happyhorse/videos' \
  -H 'authorization: Bearer YOUR_API_KEY' \
  -H 'accept: application/json' \
  -H 'content-type: application/json' \
  -d '{
    "action": "image_to_video",
    "model": "happyhorse-1.1-i2v",
    "image_url": "https://cdn.acedata.cloud/b1c82e4937.png",
    "prompt": "A cinematic white horse lifts its head, the mane moves gently in the sunrise wind, slow camera push in, warm film lighting",
    "resolution": "720P",
    "duration": 5,
    "async": true
  }'