VideoGenerationRequest

{
    "model": "kling-v1",
    "prompt": "string",
    "images": [
        "string"
    ],
    "image": "string",
    "duration": 0,
    "size": "string",
    "metadata": {
        "first_frame_image": "string",
        "img_id": "string",
        "callback_url": "http://example.com"
    }
}