Create a short video from the provided reference image, preserving the face, clothing, hairstyle, lighting, and palette of the source image (high identity consistency). Completely fixed camera (on a tripod), no panning, tilting, rolling, or zooming. 50mm fixed focal length (full frame), f/4 aperture for a slight natural depth of field. Full-length shot, subject centered. The adult woman remains entirely in the frame from beginning to end. Movement: The woman dances gently and undulates fluidly—slow, graceful undulations of the torso and arms, slight swaying of the hips, minimal step (feet almost motionless), continuous and natural rhythm, without jerks or sudden accelerations. The hair and fabric react subtly to the movement. Unchanged and stable background, with no added elements. Soft, even lighting, without flickering. Photorealistic rendering faithful to the original image. Do not: camera shake, zooming, face or hand distortion, artifacts, ghosting, warping, flickering, excessive motion blur, cropping or moving out of frame.