{
  "scene_id": "SCENE-0001",
  "storyboard_version": 2,
  "demo": true,
  "shots": [
    {
      "shot_id": "SHOT-0001-001",
      "duration_sec": 7,
      "narrative_purpose": "建立雾隐长街的空间与归乡氛围",
      "description": "雾气沿河面漫上石桥，旅人出现在画面右侧。",
      "composition": {
        "foreground": [
          "河面与石桥栏杆"
        ],
        "midground": [
          "归乡的林舟"
        ],
        "background": [
          "长街尽头的红灯笼"
        ]
      },
      "video": {
        "camera": {
          "shot_size": "WIDE",
          "movement": "DOLLY_IN",
          "lens_equivalent_mm": 28
        },
        "action_timeline": [
          {
            "start_sec": 0,
            "end_sec": 7,
            "action": "林舟沿石桥向长街走去，停在桥头望向灯火。"
          }
        ]
      },
      "dialogue": []
    },
    {
      "shot_id": "SHOT-0001-002",
      "duration_sec": 4,
      "narrative_purpose": "让无名来信成为故事的悬念",
      "description": "林舟手中折旧的信封，朱砂印记尚未褪色。",
      "video": {
        "camera": {
          "shot_size": "CLOSE_UP",
          "movement": "STATIC",
          "lens_equivalent_mm": 85
        },
        "action_timeline": [
          {
            "start_sec": 0,
            "end_sec": 4,
            "action": "指尖摩挲信封上的朱砂印记。"
          }
        ]
      },
      "dialogue": [
        {
          "speaker_name": "林舟",
          "text": "我回来了。",
          "emotion": "克制"
        }
      ],
      "hard_constraints": [
        "朱砂印记的位置与后续镜头保持一致"
      ],
      "continuity_notes": [
        "信封始终由林舟右手持有"
      ]
    },
    {
      "shot_id": "SHOT-0001-003",
      "duration_sec": 6,
      "narrative_purpose": "引导人物进入长街，承接旧书铺场次",
      "description": "长街灯笼次第亮起，风吹动旅人的围巾。",
      "video": {
        "camera": {
          "shot_size": "MEDIUM",
          "movement": "TRACK",
          "lens_equivalent_mm": 50
        },
        "action_timeline": [
          {
            "start_sec": 0,
            "end_sec": 6,
            "action": "林舟收起信封，沿灯火走向旧书铺。"
          }
        ]
      },
      "dialogue": []
    }
  ]
}