{
  "frames": [
    {
      "requested_t": -3.0,
      "actual_t": -3.0
    },
    {
      "requested_t": -2.0,
      "actual_t": -2.0
    },
    {
      "requested_t": -0.67,
      "actual_t": -0.6500000000000004
    },
    {
      "requested_t": 0.0,
      "actual_t": 0.0
    },
    {
      "requested_t": 3.4,
      "actual_t": 3.4000000000000004
    },
    {
      "requested_t": 5.1,
      "actual_t": 5.1
    },
    {
      "requested_t": 5.8,
      "actual_t": 5.800000000000001
    },
    {
      "requested_t": 7.1,
      "actual_t": 7.100000000000001
    },
    {
      "requested_t": 9.8,
      "actual_t": 9.8
    }
  ],
  "purpose": "核对前车右转离开、低速制动及后续本车右转和横向记录恢复",
  "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。"
}