Kling 3.0 Motion Control Prompt Formula Card: A Structured Shot Description Demo

Use a real motion-control task to demonstrate how to write a "Prompt Formula Card": the character appearance comes from a reference image, while the action and expressions are driven entirely by a reference video. The prompt only supplies the scene, style, and cinematic language, and does not describe the action itself. Composition of the work: 1. Character reference image (image_url): front-facing half-body, with the head, shoulders, and torso fully clear, satisfying the 2:5–5:2 aspect ratio constraint. 2. Action reference video (video_url): a single continuous shot, with the subject's head and torso always visible, and a duration within the 3–30 second range. 3. Prompt: written in a three-part structure of "subject styling → environment and lighting → camera and texture". Descriptions of action and expression are deliberately left blank and left to the reference video to determine. 4. Parameters: resolution=720p; character_orientation=video makes the orientation follow the reference video, suitable for complex actions and longer durations; keep_original_sound=true preserves the original audio of the reference video. Use cases: show developers and creators the input boundaries of this pipeline—which information should be written into the prompt and which must be carried by the assets; it is also suitable as a templated starting point for action-transfer short videos, where the same prompt structure can be reused by simply replacing the reference image or reference video.