{
  "case_id": "ADAS_TO_RISK_0007",
  "frames": [
    {
      "requested_t": -4,
      "actual_t": -4.0
    },
    {
      "requested_t": -3.75,
      "actual_t": -3.75
    },
    {
      "requested_t": -3.5,
      "actual_t": -3.5
    },
    {
      "requested_t": -3.25,
      "actual_t": -3.25
    },
    {
      "requested_t": -3,
      "actual_t": -3.0
    },
    {
      "requested_t": -2.75,
      "actual_t": -2.75
    },
    {
      "requested_t": -2.5,
      "actual_t": -2.5
    },
    {
      "requested_t": -2.25,
      "actual_t": -2.25
    },
    {
      "requested_t": -2,
      "actual_t": -2.0
    }
  ],
  "source_sampling": {
    "vehicle": {
      "rows": 200,
      "median_step_s": 0.0999811209999999,
      "max_gap_s": 0.1013451609999998,
      "start_relative_s": -9.999158703,
      "end_relative_s": 9.900718443
    },
    "control": {
      "rows": 200,
      "median_step_s": 0.09991362299999995,
      "max_gap_s": 0.10351116500000002,
      "start_relative_s": -9.926476442,
      "end_relative_s": 9.974284699
    },
    "controller": {
      "rows": 200,
      "median_step_s": 0.09991237299999955,
      "max_gap_s": 0.10319851499999988,
      "start_relative_s": -9.926802999,
      "end_relative_s": 9.973917829
    },
    "radar": {
      "rows": 80,
      "median_step_s": 0.2499952529999998,
      "max_gap_s": 0.25210068500000027,
      "start_relative_s": -9.979455027,
      "end_relative_s": 9.768899474
    },
    "model": {
      "rows": 40,
      "median_step_s": 0.500070764,
      "max_gap_s": 0.5058704580000004,
      "start_relative_s": -9.554287266,
      "end_relative_s": 9.945945803
    },
    "plan": {
      "rows": 80,
      "median_step_s": 0.250007074,
      "max_gap_s": 0.2537727910000003,
      "start_relative_s": -9.796651346,
      "end_relative_s": 9.953420832
    }
  },
  "video_anchor": 10.0,
  "note": "补充关键帧用于核对时序；不据视觉相似性擅自重设视频锚点。"
}