# src/prompt.py

def build_video_prompt(num_frames: int) -> str:
    """构建适用于 InternVL3 的单轮 AR 视频评估提示语。"""
    frame_descriptors = ''.join([f"Frame{i+1}: <image>\n" for i in range(num_frames)])
    final_prompt = frame_descriptors + "Evaluate the quality of AR occlusion and rendering in the uploaded video."
    return final_prompt