{
  "id": "C06-N08",
  "title": "只一台机器偶发掉帧，怎样对齐多机日志的时间线",
  "schema_version": "1.0",
  "evidence_kind": "合成输入与协议；非现场测试结果",
  "tool_versions": {
    "generator": "Python 3.12.4",
    "ffmpeg": "8.0.1（仅实际媒体生成与解码）"
  },
  "required_delivery": "时区、时钟偏差、单调计时与事件标识的关联样例",
  "input": {
    "events": [
      {
        "host": "A",
        "utc": "2026-10-23T12:00:00.100+00:00",
        "clock_fast_ms": 100
      },
      {
        "host": "B",
        "utc": "2026-10-23T12:00:00.020+00:00",
        "clock_fast_ms": 20
      }
    ]
  },
  "expected": {
    "normalized_utc": [
      "2026-10-23T12:00:00+00:00",
      "2026-10-23T12:00:00+00:00"
    ]
  },
  "measurement": null,
  "unmeasured": [
    "实体播放硬件",
    "显示刷新相位",
    "现场拍摄",
    "实际Windows目标机配置"
  ],
  "record_fields": [
    "host",
    "boot_id",
    "event_id",
    "event_utc",
    "clock_fast_ms",
    "uncertainty_ms",
    "mono_seconds",
    "normalized_utc"
  ]
}