curl --request GET \
  --url https://www.666api.ai/kling/v1/videos/image2video/{task_id} \
  --header 'Authorization: Bearer <token>'

{
  "task_id": "<string>",
  "status": "queued",
  "url": "<string>",
  "format": "<string>",
  "metadata": {
    "duration": 123,
    "fps": 123,
    "width": 123,
    "height": 123,
    "seed": 123
  },
  "error": {
    "code": 123,
    "message": "<string>"
  }
}