{
  "frames": [
    {
      "requested_t": -3.5,
      "actual_t": -3.5
    },
    {
      "requested_t": -1.1,
      "actual_t": -1.0999999999999996
    },
    {
      "requested_t": 0.0,
      "actual_t": 0.0
    },
    {
      "requested_t": 0.4,
      "actual_t": 0.40000000000000036
    },
    {
      "requested_t": 3.7,
      "actual_t": 3.6999999999999993
    },
    {
      "requested_t": 6.0,
      "actual_t": 6.0
    },
    {
      "requested_t": 7.0,
      "actual_t": 7.0
    },
    {
      "requested_t": 8.5,
      "actual_t": 8.5
    },
    {
      "requested_t": 9.8,
      "actual_t": 9.8
    }
  ],
  "purpose": "核对弯道方向介入与数秒后减速左转，油门持续为真不等于持续加速",
  "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。"
}