{
  "kind": "合成输入，非硬件实测",
  "topic": "NDI timecode 和 timestamp 能直接相减当延迟吗",
  "data": {
    "cases": [
      {
        "name": "同域合成UTC",
        "start": 17000000000000000,
        "end": 17000000000250000,
        "domain_start": "utc_unix_100ns",
        "domain_end": "utc_unix_100ns"
      },
      {
        "name": "节目timecode与UTC",
        "start": 12000000,
        "end": 17000000000250000,
        "domain_start": "custom_program",
        "domain_end": "utc_unix_100ns"
      },
      {
        "name": "未知时钟",
        "start": 10,
        "end": 12,
        "domain_start": null,
        "domain_end": null
      }
    ]
  }
}