```json
{
  "schema_version": "visual_qc_v2",
  "visual_score": 60,
  "summary": "需要关注：不露脸、离开镜头。",
  "frames_analyzed": 20,
  "sheets_analyzed": 7,
  "estimated_no_face_ratio": 0.7692,
  "estimated_phone_ratio": 0.0,
  "phone_demo_ratio": 0.0,
  "away_from_camera_ratio": 0.4,
  "car_inside_seen": false,
  "car_inside_evidence": [],
  "away_from_camera_segments": [
    "sheet_007.jpg 第1格：促销文字信息，无主播或车辆",
    "sheet_007.jpg 第2格：促销文字信息，无主播或车辆",
    "sheet_007.jpg 第4格：背景区域，无主要内容",
    "sheet_007.jpg 第5格：背景区域，无主要内容",
    "sheet_007.jpg 第10格：背景区域，无主要内容"
  ],
  "evidence": [
    "sheet_007.jpg 第1格：促销文字信息，无主播或车辆",
    "sheet_007.jpg 第2格：促销文字信息，无主播或车辆",
    "sheet_007.jpg 第1格：促销文字信息，无主播或车辆",
    "sheet_007.jpg 第2格：促销文字信息，无主播或车辆"
  ],
  "risks": [
    "不露脸：77%，不超过10%；车内/车辆/手机工作演示不计入违规分母",
    "离开镜头：40%，不超过10%；车辆/内饰展示不算离开镜头"
  ],
  "suggestions": [
    "减少长时间背身或只拍空景，产品特写可保留但需要及时回到主播讲解。",
    "切换机位或展示车辆时保持讲解连续，避免出现无人空镜头。"
  ],
  "checks": [
    {
      "name": "不露脸",
      "status": "fail",
      "value": 0.7692307692307693,
      "threshold": "不超过10%；车内/车辆/手机工作演示不计入违规分母",
      "deduction": 20,
      "evidence": [
        "sheet_007.jpg 第1格：促销文字信息，无主播或车辆",
        "sheet_007.jpg 第2格：促销文字信息，无主播或车辆",
        "sheet_007.jpg 第4格：背景区域，无主要内容",
        "sheet_007.jpg 第5格：背景区域，无主要内容",
        "sheet_007.jpg 第10格：背景区域，无主要内容"
      ],
      "suggestion": "减少长时间背身或只拍空景，产品特写可保留但需要及时回到主播讲解。"
    },
    {
      "name": "私人玩手机",
      "status": "pass",
      "value": 0.0,
      "threshold": "不超过10%；留资/报价/小风车演示不算玩手机",
      "deduction": 0,
      "evidence": [],
      "suggestion": "站在镜头前避免低头处理私人手机；如需演示留资或报价，动作和画面要明确指向业务流程。"
    },
    {
      "name": "离开镜头",
      "status": "fail",
      "value": 0.4,
      "threshold": "不超过10%；车辆/内饰展示不算离开镜头",
      "deduction": 20,
      "evidence": [
        "sheet_007.jpg 第1格：促销文字信息，无主播或车辆",
        "sheet_007.jpg 第2格：促销文字信息，无主播或车辆",
        "sheet_007.jpg 第4格：背景区域，无主要内容",
        "sheet_007.jpg 第5格：背景区域，无主要内容",
        "sheet_007.jpg 第10格：背景区域，无主要内容"
      ],
      "suggestion": "切换机位或展示车辆时保持讲解连续，避免出现无人空镜头。"
    },
    {
      "name": "车内/内饰镜头",
      "status": "pass",
      "value": false,
      "threshold": "按规则展示为是/否；是否扣分取决于设置",
      "deduction": 0,
      "evidence": [],
      "suggestion": "如不允许进车内或拍内饰，请在直播前明确机位边界；如果允许展示，保持记录即可。"
    }
  ],
  "issue_summary": [
    {
      "name": "不露脸",
      "status": "fail",
      "value": 0.7692307692307693,
      "threshold": "不超过10%；车内/车辆/手机工作演示不计入违规分母",
      "deduction": 20,
      "evidence": [
        "sheet_007.jpg 第1格：促销文字信息，无主播或车辆",
        "sheet_007.jpg 第2格：促销文字信息，无主播或车辆",
        "sheet_007.jpg 第4格：背景区域，无主要内容",
        "sheet_007.jpg 第5格：背景区域，无主要内容",
        "sheet_007.jpg 第10格：背景区域，无主要内容"
      ],
      "suggestion": "减少长时间背身或只拍空景，产品特写可保留但需要及时回到主播讲解。"
    },
    {
      "name": "离开镜头",
      "status": "fail",
      "value": 0.4,
      "threshold": "不超过10%；车辆/内饰展示不算离开镜头",
      "deduction": 20,
      "evidence": [
        "sheet_007.jpg 第1格：促销文字信息，无主播或车辆",
        "sheet_007.jpg 第2格：促销文字信息，无主播或车辆",
        "sheet_007.jpg 第4格：背景区域，无主要内容",
        "sheet_007.jpg 第5格：背景区域，无主要内容",
        "sheet_007.jpg 第10格：背景区域，无主要内容"
      ],
      "suggestion": "切换机位或展示车辆时保持讲解连续，避免出现无人空镜头。"
    }
  ],
  "normal_summary": [
    "私人玩手机：正常"
  ],
  "thresholds": {
    "no_face_ratio": 0.1,
    "phone_ratio": 0.1,
    "deduct_car_inside_on_seen": true
  },
  "extra_requirements": "",
  "frame_labels_sample": [
    {
      "sheet": "sheet_007.jpg",
      "cell": 1,
      "scene": "空镜头",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": true,
      "product_or_demo": false,
      "confidence": 0.9,
      "evidence": "促销文字信息，无主播或车辆"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 2,
      "scene": "空镜头",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": true,
      "product_or_demo": false,
      "confidence": 0.9,
      "evidence": "促销文字信息，无主播或车辆"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 3,
      "scene": "车辆外观",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": true,
      "confidence": 0.8,
      "evidence": "可见车辆顶部轮廓"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 4,
      "scene": "空镜头",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": true,
      "product_or_demo": false,
      "confidence": 0.9,
      "evidence": "背景区域，无主要内容"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 5,
      "scene": "空镜头",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": true,
      "product_or_demo": false,
      "confidence": 0.9,
      "evidence": "背景区域，无主要内容"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 6,
      "scene": "主播出镜",
      "anchor_visible": true,
      "face_visible": true,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": false,
      "confidence": 0.8,
      "evidence": "主播头部及上半身可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 7,
      "scene": "主播出镜",
      "anchor_visible": true,
      "face_visible": true,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": false,
      "confidence": 0.8,
      "evidence": "主播上半身及面部清晰可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 8,
      "scene": "主播出镜",
      "anchor_visible": true,
      "face_visible": true,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": false,
      "confidence": 0.8,
      "evidence": "主播与车辆同框，面部可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 9,
      "scene": "车辆外观",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": true,
      "confidence": 0.8,
      "evidence": "车辆前部及侧面可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 10,
      "scene": "空镜头",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": true,
      "product_or_demo": false,
      "confidence": 0.9,
      "evidence": "背景区域，无主要内容"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 11,
      "scene": "主播出镜",
      "anchor_visible": true,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": false,
      "confidence": 0.7,
      "evidence": "主播下半身及腿部可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 12,
      "scene": "主播出镜",
      "anchor_visible": true,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": false,
      "confidence": 0.7,
      "evidence": "主播腿部及车辆部分可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 13,
      "scene": "车辆外观",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": true,
      "confidence": 0.8,
      "evidence": "车辆侧面及车轮可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 14,
      "scene": "车辆外观",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": true,
      "confidence": 0.8,
      "evidence": "车辆后部及侧面可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 15,
      "scene": "空镜头",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": true,
      "product_or_demo": false,
      "confidence": 0.9,
      "evidence": "背景区域，无主要内容"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 16,
      "scene": "车辆外观",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": true,
      "confidence": 0.7,
      "evidence": "车辆底部及地面可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 17,
      "scene": "车辆外观",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": true,
      "confidence": 0.7,
      "evidence": "车辆底部及地面可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 18,
      "scene": "车辆外观",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": false,
      "product_or_demo": true,
      "confidence": 0.7,
      "evidence": "车辆底部及地面可见"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 19,
      "scene": "空镜头",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": true,
      "product_or_demo": false,
      "confidence": 0.9,
      "evidence": "背景区域，无主要内容"
    },
    {
      "sheet": "sheet_007.jpg",
      "cell": 20,
      "scene": "空镜头",
      "anchor_visible": false,
      "face_visible": false,
      "private_phone_use": false,
      "work_phone_demo": false,
      "car_inside_seen": false,
      "away_from_camera": true,
      "product_or_demo": false,
      "confidence": 0.9,
      "evidence": "背景区域，无主要内容"
    }
  ]
}
```