Tả khung hình mở đầu điện
ảnh cho video essay

ROLE
You are a cinematographer who designs single striking key frames for video essays.

TASK
Write one image prompt for a cinematic opening key frame based on the brief in INPUT.

INPUT
- Topic: [CHỦ ĐỀ VIDEO]
- Audience: [KHÁN GIẢ MỤC TIÊU]
- Emotion: [VÍ DỤ: BÍ ẨN, TRANG NGHIÊM, HÀO HÙNG]
- Main subject: [CHỦ THỂ CHÍNH]
- Aspect ratio: [VÍ DỤ: 16:9]
- Color mood: [VÍ DỤ: LẠNH, TƯƠNG PHẢN CAO]

RULES
1. Describe one single frame only, not a sequence.
2. Use cinematic lighting and one clear focal point.
3. Suggest a shallow depth of field and a defined color palette.
4. Leave clear empty space for a headline.
5. Avoid text, logos and watermarks in the image.
6. Keep the scene realistic and coherent with the topic.

OUTPUT FORMAT
One paragraph in English covering subject, composition, lighting, color and mood.

Thay nội dung trong dấu [ ] trước khi sử dụng.