The friends casually talk to each other and laugh naturally, with restrained conversational gestu...

The friends casually talk to each other and laugh naturally, with restrained conversational gestures, subtle head movements, blinking, breathing, and small posture adjustments. The woman in the white sweater in the center remains seated exactly where she is and simply watches her friends, occasionally shifting her gaze between them with a very subtle gentle smile. CRITICAL: preserve the central woman's facial identity exactly as in the source image throughout the entire video. Her facial structure, proportions, eyes, nose, mouth, jawline, skin texture, hairstyle, and overall appearance must remain unchanged and stable frame to frame. Keep her expression restrained and close to the original expression. No exaggerated smile, no talking, no large mouth movement, no head rotation, no facial morphing, no identity drift, no beautification or facial reinterpretation. Only natural blinking, tiny eye movements, subtle breathing, and a very slight smile. The other friends continue their relaxed conversation and occasional laughter naturally without exaggerated gestures. Preserve every person's identity, clothing, position, the room, objects, lighting, warm party atmosphere, and original composition. Smooth realistic human motion with natural proportions. Static locked-off camera. Absolutely no camera movement, no zoom, no pan, no tilt, no reframing, no camera shake.