手一扫就变脸 · 双人自拍整活
10 秒自拍整活短片，怎么做出来的？

SCENE CONTEXT
A playful selfie video of two friends inside the colorful attic bedroom in <<<image_3>>>. Recreate the hand-sweep and expression-switching gag from <<<video_1>>> for the first nine seconds. During the final second, both break into spontaneous, wide-mouthed laughter.

ACTIVE REFERENCES / REFERENCE USAGE
<<<image_1>>> defines the foreground character’s identity, hair, body proportions, and complete outfit: orange star cap, twin braids, white keyhole crop top, cream jacket worn off the shoulders, and matching accessories.
<<<image_2>>> defines the rear character’s identity, hair, body proportions, and complete outfit: long black hair with bangs, gray suit, white blouse, and black choker with an orange bead.
Use the large facial portrait on each sheet for facial identity. The gray circles on the full-body views are reference masks and must not appear.
<<<image_3>>> defines the room’s architecture, furnishings, colors, and lighting. Adapt its viewing angle to the selfie camera.
<<<video_1>>> controls the first nine seconds of hand choreography, facial-expression timing, head movements, and relative character placement. Its performers’ appearances and clothing do not transfer.

FIRST FRAME
The video begins directly through the phone’s front-facing camera. <<<image_1>>> holds the phone at arm’s length, approximately at eye level, with her holding hand and phone outside the frame. Her face and upper chest fill the foreground. <<<image_2>>> is close behind her, slightly offset toward screen-right, with her face clearly visible beside <<<image_1>>>’s head. Both initially look into the lens with straight faces.

WORLD AND SPATIAL BLOCKING
They are positioned on the pink rug near the foot of the bed, with the blue photo-covered wall behind them. Portions of the pastel sloped ceiling and warm string lights remain visible above their heads; the bed and bright curtained window appear toward screen-right.
Keep the room consistent with <<<image_3>>>, allowing the tight selfie framing to crop most furniture.
<<<image_1>>> holds the phone throughout. <<<image_2>>> has both hands free to perform the gesture around <<<image_1>>>’s face. Maintain their front-to-back arrangement.

SHOT FORMAT
One continuous 10-second selfie take. The selfie image fills the output frame without the reference video’s black side padding. No cuts or external views of them filming.

OPTICS AND CAMERA
Natural front-camera perspective at arm’s length, with both faces readable and enough space above <<<image_1>>>’s cap for the hand movements.
Keep the camera almost stationary during the gag, matching the reference’s stable composition with only slight natural hand drift. During the final laughter, allow a small, believable wobble from <<<image_1>>>’s shaking shoulders while keeping both faces in frame. No zoom, orbit, or dramatic reframing.

ACTION / PERFORMANCE TIMING
0.0–0.7s:
Match the reference’s brief neutral opening and hand preparation. <<<image_1>>> keeps a straight face. <<<image_2>>> raises one open hand above the cap and positions the other below <<<image_1>>>’s face.

0.7–9.0s:
<<<image_2>>> reproduces the reference’s rapid alternating hand sweeps, exchanging the upper and lower hand positions and briefly obscuring <<<image_1>>>’s face as they pass.
<<<image_1>>> switches between a broad toothy grin and a closed-mouth neutral expression at the corresponding moments in <<<video_1>>>. Preserve the original sweep directions, pace, short expression holds, blinks, and small head dips. <<<image_2>>> remains deliberately deadpan.
Use the reference’s precise motion timing rather than inventing additional gestures.

9.0–10.0s:
The gag breaks. <<<image_2>>> stops sweeping and lowers her hands clear of both faces. Both simultaneously burst into broad, open-mouthed laughter: cheeks lift, eyes crinkle, and shoulders bounce naturally. <<<image_2>>> leans slightly closer beside <<<image_1>>> so both laughing faces remain visible. <<<image_1>>> keeps holding the phone. End while both are still laughing, without a freeze or posed finish.

PHYSICS AND CONTINUITY
Maintain each character’s face, hairstyle, clothing, and accessories through all hand occlusions. Expressions change naturally without identity morphing. <<<image_2>>>’s hands remain anatomically connected to her arms.
<<<image_1>>>’s orange cap stays securely on, her braids remain intact, and her cream jacket stays off her shoulders. Keep the hand choreography clear of the cap brim. Preserve natural hair and fabric movement.

LIGHTING
Use the bedroom’s soft window daylight from screen-right, balanced with the warm glow of the string lights. Keep both faces properly exposed and the pastel room recognizable. Lighting and exposure remain stable.

AUDIO
No added dialogue or narration. During the final second, both characters’ natural laughter begins in sync with their visible expressions, over quiet room ambience.

LOCAL CONSTRAINTS
Exactly two characters. Preserve the reference choreography’s screen direction without reversing it. Keep the phone outside its own camera view. No mirror shot, extra hands, face masks, captions, wardrobe changes, or unrelated action.