{
  "frames": [
    {
      "requested_t": -2.0,
      "actual_t": -2.0
    },
    {
      "requested_t": -1.4,
      "actual_t": -1.4000000000000004
    },
    {
      "requested_t": 0.0,
      "actual_t": 0.0
    },
    {
      "requested_t": 1.0,
      "actual_t": 1.0
    },
    {
      "requested_t": 2.3,
      "actual_t": 2.3000000000000007
    },
    {
      "requested_t": 3.0,
      "actual_t": 3.0
    },
    {
      "requested_t": 4.6,
      "actual_t": 4.6
    },
    {
      "requested_t": 6.0,
      "actual_t": 6.0
    },
    {
      "requested_t": 7.7,
      "actual_t": 7.699999999999999
    }
  ],
  "purpose": "核对跟随前车右转、先给油退出纵向再脚刹及转后加速，不将后段灯色回填",
  "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。"
}