An American street prank: an iPhone camera chases a woman, taps her shoulder twice, and she hides a handheld ad board behind her back

Prompt

10-second vertical 9:16 realistic American street commercial mini-drama with a twist. First-person follow shot on an iPhone native camera, with the camera operator, like an ordinary passerby, chasing @1女士 from behind. Auto exposure, auto white balance, autofocus, no color grading, no filters, no beauty retouching. Natural walking bounce, chase shake, a sense of breathing, motion blur during turns, and slight autofocus delay. Outside an ordinary commercial building in an American city: gray metal wall, red brick base, narrow sidewalk, gravel landscaping strip, and lawn. Keep the background clean; no brand signs.
【Character lock】 The only live-action person on set is the preset character @1女士
Clothing
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. Her face, hairstyle, figure, and entire preset outfit must strictly match @1 and remain consistent throughout. In the first half, @1女士 keeps walking forward along the sidewalk. After the first shoulder tap and while delivering the warning, she must not stop completely; she can only slow down slightly and twist her upper body to look back. She may stop fully only after the second shoulder tap. The camera operator must remain off-screen at all times; only the right hand of an adult passerby may briefly enter the frame. The hand may gently tap @1女士 only on her upper back or shoulder.
【Handheld advertising board】 The advertising board is not a wall sign, but a horizontal handheld rigid board that can be raised with both hands. Approximately 60 cm wide, 42 cm high, and 5 mm thick; a lightweight, rigid black foam board, clearly narrower than @1女士’s upper body and able to be completely hidden behind her. The front must exactly reproduce the user-provided black-and-gold advertising reference image
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“JOHN87445528” The person in the ad image is only a printed portrait and must not become a live-action person on set. Her left hand is naturally hidden behind her back, secretly holding the board, but her body completely conceals it: no edge, gold graphic, or text may appear before the reveal.
【Strict timed storyboard】
00:00—00:01.30 @1女士 has her back to the camera and keeps walking forward along the sidewalk beside the building’s exterior wall. Her gait is natural; her hair and clothes sway slightly with each step. The first-person camera operator quickens their pace and chases after her. The camera has pronounced but realistic vertical bounce; gradually accelerating footsteps and breathing can be heard. The operator catches up behind her, and a right hand reaches in from the bottom-right of the frame and gently taps her right shoulder.
00:01.30—00:03.50 @1女士 does not stop. She only slows her pace slightly, continuing to move forward as she twists her upper body over her right shoulder and looks back at the camera. Frowning, she points behind her at the pursuing camera operator with her right index finger and sternly warns them in Mandarin while walking: “If you touch me one more time, you’ll find out who I am!” She must not stop and stand facing the camera; her feet must keep taking alternating steps forward. After the warning, she lowers her finger, turns her head forward again, and resumes her original walking speed.
00:03.50—00:05.10 @1女士 continues walking away from the camera, does not wait for the camera operator, and does not sneak a look back. The operator pauses for half a second, then quickens their pace again to catch up. The camera shakes more noticeably during the chase; the right hand reaches for the same shoulder again and gently taps her a second time.
00:05.10—00:06.40 After the second tap, @1女士 takes one more step forward, then abruptly plants one foot firmly and stops completely for the first time. She quickly turns to face the camera. Startled, the camera operator instinctively takes two quick steps backward; the frame shakes noticeably and pulls out to a full-body medium shot. As she turns, @1女士 suddenly pulls the horizontal advertising board from behind her back with her left hand. The board must physically slide out from beside her left waist, not appear out of nowhere. Her right hand immediately catches the lower-right corner of the board; with both hands she flips it firmly so the front faces the camera and raises it to chest height. Pulling it out, flipping it, and catching it with both hands are three quick, continuous movements. The rigid board has realistic weight and inertia and wobbles slightly once as it comes to a stop.
00:06.40—00:08.30 @1女士 holds the advertising board steadily with both hands. Her serious expression suddenly becomes a confident, friendly, slightly smug commercial smile. Looking at the camera over the top of the board, she announces loudly in Mandarin: “I’m the official advertising ambassador for JOHN87445528!” While she speaks, the board stays directly facing the camera, does not rotate side to side, and does not obscure the brand text.
00:08.30—00:10.00 @1女士 remains standing in place and extends the board slightly toward the camera with both hands in a natural product-display gesture. The camera slowly tilts down from her face to the board; autofocus locks onto the black-and-gold graphic and “JOHN87445528”. Keep the entire board sharp and clearly visible for at least the final 1.5 seconds, with her satisfied smile visible above it. End the shot.
【Audio】 Real synchronous sound only: a light outdoor breeze, distant cars, continuous footsteps, the camera operator’s accelerating footsteps, faint breathing, two shoulder taps, clothing rustle, the sound of the rigid advertising board being pulled out and flipped, and @1女士’s original Mandarin dialogue. No background music, voice-over, subtitles, or laughter sound effects.
【Hard constraints】 After the first shoulder tap, @1女士 must not stop or stand facing the camera to deliver her line; she must warn the camera operator while walking and looking back. After the warning, she must turn her head forward and keep walking. She may come to a complete stop, turn around, and pull out the advertising board only after the second shoulder tap. The board must not appear early or materialize out of nowhere, and must not turn into a wall sign, electronic display, sheet of paper, or oversized billboard. Absolutely no dogs, cats, or other animals. @1女士 is the only live-action person in the entire video. No subtitles, title, watermark, media logo, platform interface, or extra text; except for “JOHN87445528” on the board.

10秒竖屏9:16，美式街头写实反转广告短剧。iPhone原生相机第一人称跟拍，摄影者像路人一样从后方追赶@1女士。自动曝光、自动白平衡、自动对焦，未经调色，无滤镜，无美颜。真实步行起伏、追赶抖动、呼吸感、转身运动模糊 and 轻微对焦延迟。 美国城市普通商业建筑外侧，灰色金属墙、红砖墙脚、狭长人行道、碎石绿化带和草坪。背景保持干净，不出现任何品牌招牌。 【人物锁定】 唯一现场真人为预设人物@1女士
穿着
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。脸、发型、身材和整套预设服装严格参考@1，全程保持一致。 @1女士前半段始终沿着人行道向前走。第一次被拍肩和说出警告时都不能完全停下，只能稍微放慢速度、扭转上半身回头。她只能在第二次被拍肩后正式停住。 摄影者始终不露脸，只允许一只成年路人的右手短暂入镜。手掌只能轻拍@1女士的上背部或肩膀。 【手持广告牌】 广告牌不是墙面招牌，而是一块可以用双手举起的横向手持硬板。 尺寸约60厘米宽、42厘米高、厚度约5毫米，黑色轻质硬质泡沫板，明显小于@1女士的上半身宽度，可以完整藏在她身后。 正面严格使用用户提供的黑金广告参考图
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“JOHN87445528” 广告图中的人物只是平面印刷肖像，不能变成现场真人。 她的左手自然藏在身后，暗中握着广告牌，但广告牌被身体完全遮住，广告牌不能提前露出任何边缘、金色图案或文字。 【严格时间分镜】 00:00—00:01.30 @1女士背对镜头，沿着建筑外墙旁的人行道持续向前走。她步伐自然，头发和衣服随步伐轻微摆动。 第一人称摄影者在后面加快脚步追赶。镜头出现明显但真实的上下起伏，能听见逐渐加快的脚步和呼吸声。 摄影者追到她身后，右手从画面右下方伸出，轻轻拍一下她右侧肩膀。 00:01.30—00:03.50 @1女士没有停下来。她只是稍微放慢脚步，身体继续向前移动，同时从右肩方向扭转上半身，回头盯住镜头。 她眉头收紧，用右手食指向后指着追赶的摄影者，边走边用普通话严肃警告： “你再碰我一下，就知道我是谁了！” 她不能正面站定，双脚必须继续交替向前走。警告结束后，她收回手指，把头转回前方，恢复原来的步行速度。 00:03.50—00:05.10 @1女士继续背对镜头向前走，没有等待摄影者，也没有回头偷看。 摄影者停顿半秒后再次加快脚步追上去。镜头产生更明显的追赶抖动，右手再次伸向她的同一个肩膀位置，轻轻拍下第二次。 00:05.10—00:06.40 第二次被拍后，@1女士先向前多走一步，然后突然把一只脚稳稳踩住，第一次彻底停下。 她迅速转身面对镜头。摄影者受到惊吓，本能地连续后退两步，画面产生明显晃动并扩大到全身中景。 @1女士转身的同时，左手从背后把横向广告牌突然抽出。 广告牌必须沿着她左侧腰部真实滑出，不是凭空生成。她右手立即接住广告牌右下角，双手用力一翻，将广告牌正面朝向镜头举到胸前。 抽牌、翻面、双手接住三个动作连贯快速。硬板带有真实重量和惯性，停止时轻微晃动一次。 00:06.40—00:08.30 @1女士双手稳稳举着广告牌。刚才严肃的表情突然变成自信、亲切、略带得意的商业笑容。 她从广告牌上方看着镜头，用普通话高调宣布： “我是JOHN八七四四五五二八的官方广告大使！” 说话时广告牌始终正对镜头，不左右旋转，不遮挡品牌文字。 00:08.30—00:10.00 @1女士保持原地站立，双手将广告牌稍微向镜头前递，形成自然的广告展示动作。 镜头从她的脸缓慢下移到广告牌，自动对焦锁定黑金图案和“JOHN87445528”。最后至少1.5秒保持广告牌完整清晰，她从广告牌上方露出满意笑容，画面结束。 【声音】 只有真实同期声：室外微风、远处车辆、连续步行声、摄影者追赶的加速脚步声、轻微呼吸声、两次拍肩声、衣物摩擦声、广告硬板抽出和翻转的声音，以及@1女士的中文原声。 无背景音乐，无旁白，无字幕，无笑声音效。 【硬性限制】 第一次被拍肩后，@1女士不能停下、不能正面站着说台词，必须边走边回头警告；警告结束后必须扭头继续向前走。 只有第二次被拍肩后，她才能完全停住、转身并抽出广告牌。 广告牌不能提前出现，不能凭空生成，不能变成墙面招牌、电子屏、纸张或超大广告板。 彻底禁止小狗、猫及其他动物。全片只有@1女士一名现场真人。 不要字幕、标题、水印、媒体Logo、平台界面或额外文字；广告牌上的“JOHN87445528”除外。

• Needs your photo: attach an image to the request — the prompt works with it.
• The prompt is in Chinese: paste it as is — the model understands it.