KlingV3MotionControlRequest

{
    "prompt": "保持动作流畅自然",
    "image_url": "https://example.com/character.jpg",
    "video_url": "https://example.com/motion.mp4",
    "character_orientation": "front",
    "keep_original_sound": false,
    "elements": [
        {
            "element_id": "123456",
            "frontal_image_url": "https://example.com/frontal.jpg",
            "reference_image_urls": [
                "https://example.com/ref1.jpg",
                "https://example.com/ref2.jpg"
            ]
        }
    ]
}