{
  "frames": [
    {
      "requested_t": -2.5,
      "actual_t": -2.5
    },
    {
      "requested_t": -1.5,
      "actual_t": -1.5
    },
    {
      "requested_t": 0.0,
      "actual_t": 0.0
    },
    {
      "requested_t": 1.2,
      "actual_t": 1.1999999999999993
    },
    {
      "requested_t": 2.0,
      "actual_t": 2.0
    },
    {
      "requested_t": 3.0,
      "actual_t": 3.0
    },
    {
      "requested_t": 5.7,
      "actual_t": 5.699999999999999
    },
    {
      "requested_t": 7.0,
      "actual_t": 7.0
    },
    {
      "requested_t": 9.7,
      "actual_t": 9.7
    }
  ],
  "purpose": "核对前车制动、短时距、前车向右分流及本车后段左转道选择，审核雷达对象连续性",
  "video_anchor_s": 10.0,
  "note": "使用元数据锚点，不按主观场景判断移动视频；不从未标定画面测算距离或推断路权。"
}