人像静止 · 世界流动
中心人物纹丝不动如雕塑，只有背景人流车流动。Mannequin Challenge 的反向操作。
PROMPT · Seedance 2.0 提示词开始AI创作
让画面中央的人物完全静止不动，如雕像一般凝固。只让周围的背景和人物快速运动，并带有强烈的动态模糊，围绕静止的主体营造出动态的延时摄影效果。镜头必须保持完全固定。
讓畫面中央的人物完全靜止不動，如雕像一般凝固。只讓周圍的背景和人物快速運動，並帶有強烈的動態模糊，圍繞靜止的主體營造出動態的縮時攝影效果。鏡頭必須保持完全固定。
keep the central person completely motionless and frozen like a statue. Animate only the surrounding background and people with fast-paced movement and heavy motion blur, creating a dynamic time-lapse effect around the static subject. The camera must remain perfectly fixed.
中央の人物は彫像のように完全に静止させ、微動だにさせない。周囲の背景と人々のみを、速いテンポの動きと強いモーションブラーでアニメーションさせ、静止した被写体の周りにダイナミックなタイムラプス効果を生み出す。カメラは完全に固定されたままとする。
✍️ 编辑解析
核心诉求就一句「keep the central person completely motionless」，人物冻结、背景高速流动、镜头绝对固定，三个约束互相较劲，其实是在考模型的分层运动控制能力。Seedance 2.0在角色一致性和背景动态渲染上底子不错，但这种反差极大的静止/运动对比对时序稳定性要求很高，短短一句话信息密度太低，很容易在长镜头里让「冻结」的人物自己漂移或眨眼。标need_expanded就是冲着这个雷区去的，细节不补全，模型大概率会自己脑补出摇晃感。
想要更强的画面控制？编辑扩写参考版（非原词，仅供借鉴）：
Keep the central person completely motionless and frozen like a mannequin — no blinking, no breathing motion, no clothing sway — for the entire duration of the shot. Around this fixed anchor, the background and every other person in frame move at high speed with heavy directional motion blur: pedestrians streak past like ghosts, vehicles blur into light trails, hair and banners of passersby whip violently. The contrast should feel almost supernatural, as if the subject exists outside of time while the world races forward around them. The camera itself must remain locked on a static tripod position — no pan, no tilt, no dolly, no handheld micro-shake whatsoever. Lighting stays consistent and unaffected by the motion blur, so the frozen figure reads crisp, sharp, and perfectly still against the smeared, chaotic environment throughout the entire sequence.
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