{
  "frames": [
    {
      "requested_t": -2.2,
      "actual_t": -2.2
    },
    {
      "requested_t": -1.7,
      "actual_t": -1.6999999999999993
    },
    {
      "requested_t": -1.4,
      "actual_t": -1.4000000000000004
    },
    {
      "requested_t": -1.1,
      "actual_t": -1.0999999999999996
    },
    {
      "requested_t": -0.62,
      "actual_t": -0.5999999999999996
    },
    {
      "requested_t": 0.0,
      "actual_t": 0.0
    },
    {
      "requested_t": 2.98,
      "actual_t": 3.0
    },
    {
      "requested_t": 5.0,
      "actual_t": 5.0
    },
    {
      "requested_t": 9.8,
      "actual_t": 9.8
    }
  ],
  "purpose": "核查曲率差达到0.2时本车已近停、方向未大转及静止后的脚刹",
  "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。"
}