{
  "frames": [
    {
      "requested_t": -7.7,
      "actual_t": -7.7
    },
    {
      "requested_t": -3.2,
      "actual_t": -3.2
    },
    {
      "requested_t": -2.9,
      "actual_t": -2.9000000000000004
    },
    {
      "requested_t": -0.8,
      "actual_t": -0.8000000000000007
    },
    {
      "requested_t": -0.2,
      "actual_t": -0.1999999999999993
    },
    {
      "requested_t": 2.7,
      "actual_t": 2.6999999999999993
    },
    {
      "requested_t": 4.7,
      "actual_t": 4.699999999999999
    },
    {
      "requested_t": 5.5,
      "actual_t": 5.5
    },
    {
      "requested_t": 7.0,
      "actual_t": 7.0
    }
  ],
  "purpose": "核实先停再跟随右转前车起步、脚刹退出后再次等待以及后续右转，勿由灯色臆定路权",
  "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。"
}