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GLOBAL LOCK: A vertical 9:16 transition-style indoor selfie lip-sync video featuring one young East Asian woman in her early 20s with fair skin, a slim build, long straight dark-brown hair styled into two space-bun knots with face-framing strands, and soft glam makeup. The clip has two intentional visual phases while preserving the same subject identity and close portrait framing. Phase one is a bright neutral indoor room with a fitted white long-sleeve top, soft front light, and a small pink flower arrangement visible in the background. Phase two shifts to a dark red monochrome lighting setup where the subject wears a black spaghetti-strap camisole and the whole scene is washed in saturated red light. Keep the selfie-close chest-up framing and direct lip-sync performance consistent, but make the lighting, outfit, and mood shift sharply at the transition point. No text overlays, no subtitles, no spoken dialogue; all visible mouth movement is music-led lip-sync only.

[00:00-00:03] Bright phase. The subject faces the camera in a close chest-up frame, wearing a fitted white long-sleeve top and clear glasses. The background is a soft indoor room with neutral walls and a small pink floral arrangement on one side. Lighting is bright, soft, and frontal, giving a clean, sweet, polished selfie feel while she lip-syncs with direct eye contact.

[00:03-00:03.5] Transition beat. Hold the same subject identity and close camera relationship, but snap the mood into a darker, more dramatic visual world. The white-lit room disappears into a saturated red lighting scheme, glasses are gone, and the outfit changes to a black spaghetti-strap camisole. The transition should feel intentional and contrast-driven rather than glitchy.

[00:03.5-00:06] Red phase begins. The subject remains chest-up and face-forward, now lit entirely in rich red light with deeper shadows and a more sensual expression. She continues lip-syncing with slower head turns and a heavier gaze. The black camisole neckline and hair strands are visible against the red wash.

[00:06-00:08.5] She sustains the red-light mood, using small mouth shapes, subtle eye narrowing, and slow head motion to keep the scene alive. The lighting should stay monochromatic red, with soft contrast on the cheekbones, nose bridge, and collarbone. No background detail should overpower the face.

[00:08.5-00:08.5] End cleanly in the red phase with the same intense face-forward mood, preserving the strong good-girl-to-dark-glam contrast created by the earlier transition.

NEGATIVE PROMPT: extra people, distorted face, broken fingers, extra hands, wrong hair, missing buns, weak transition, mixed lighting phases, wrong outfit colors, text, watermark, UI overlay, outdoor background, camera shake, cuts beyond intended transition, blur haze, plastic skin, spoken dialogue, narration, lip-sync mismatch.

SHOT PROMPTS:
- Shot 1 delta: bright white-top selfie with glasses and soft sweet expression.
- Shot 2 delta: abrupt aesthetic transition into red-light black-camisole phase.
- Shot 3 delta: red monochrome portrait with stronger gaze.
- Shot 4 delta: sustained red-light lip-sync with slow head motion.
- Shot 5 delta: intense red-phase finish.

SPEECH PACK:
Timecoded transcript: no spoken dialogue in the reference. The performer lip-syncs to a music track only; keep beat-matched mouth movement without independent spoken words.

[00:00-00:03]
TAKE_A: bright-phase soft lip-sync with calm eye contact.
TAKE_B: slightly clearer mouth closures with sweet composed expression.
TAKE_C: lighter smile undertone with smaller lips.
Prosody markup: [music intro][no spoken words][bright phase][medium sync]

[00:03-00:03.5]
TAKE_A: transition lands on beat with facial continuity preserved.
TAKE_B: stronger beat hit at the visual change.
TAKE_C: smoother mood shift with same lyric timing.
Prosody markup: [transition beat][visual contrast hit][high sync]

[00:03.5-00:06]
TAKE_A: red-phase lip-sync with slower sensual gaze.
TAKE_B: stronger mouth articulation and deeper eye focus.
TAKE_C: softer lips with more head-led attitude.
Prosody markup: [music continuation][red phase][medium-high sync]

[00:06-00:08.5]
TAKE_A: sustained red-light phrase with small head turns.
TAKE_B: stronger final mouth shapes and eye narrowing.
TAKE_C: calmer dark-glam delivery with softer lips.
Prosody markup: [music ending][red phase sustain][medium-high sync]