curl --request POST \
  --url https://ai.alad.com/v1/video/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "wan2.2-i2v-a14b",
  "image": "https://example.com/reference.jpg",
  "prompt": "相机缓慢推进",
  "duration": 5,
  "width": 123,
  "height": 123,
  "seed": 123
}
'

{
  "task_id": "<string>",
  "status": "<string>"
}