헬리콥터 제품홍보영상 프롬프트

Use the uploaded image as the exact starting frame. Keep the camera completely locked throughout the entire video.
A massive outdoor billboard beside the Gyeongbu Expressway in South Korea is completely covered by a huge red satin curtain. A black helicopter hovers directly above it, with a single heavy lifting cable attached to the top center of the curtain.
As the video begins, the helicopter slowly ascends vertically. The cable becomes taut, pulling the top center of the curtain upward first. The entire massive curtain then gradually lifts from bottom to top, folding, gathering, and swaying naturally with the realistic weight and physics of thick fabric.
As the curtain rises, the uploaded advertising image is gradually revealed underneath, covering the entire giant billboard. Preserve the uploaded image exactly, including its product, people, logos, text, colors, design, proportions, and layout.
By the end, the curtain is completely lifted above the billboard and disappears upward out of frame, fully revealing the giant advertisement. The helicopter continues ascending.
Cars, buses, and trucks continue moving naturally along the expressway throughout the shot. The helicopter rotor spins rapidly, and its downdraft causes realistic movement in the heavy curtain. Include authentic highway traffic ambience, powerful helicopter rotor sound, wind, and heavy fabric flapping. Photorealistic, real-world outdoor advertising reveal event, cinematic scale, vertical 9:16.