TextToVideoRequest

{
    "resolution": "480p",
    "duration": "5",
    "aspect_ratio": "21:9",
    "generate_audio": true,
    "seed": 42,
    "end_user_id": "user_12345",
    "callback_url": "https://your-server.com/webhook/video",
    "prompt": "一只猫在阳光下慵懒地伸展，4K 高清"
}