{
  "version": 1,
  "size": 8174602,
  "mtime_ns": 1789024834368128538,
  "duration": 3.2,
  "note": "No clear motion in 2.0s probes — stills every 2.0s. A short train can sit between them; watch the clip if it looks empty.",
  "suggest": null,
  "frames": [
    {
      "t": 0.0,
      "file": "000_00000.jpg",
      "brightness": 128.3672222222222
    },
    {
      "t": 2.0,
      "file": "001_00200.jpg",
      "brightness": 122.34555555555555
    },
    {
      "t": 3.14,
      "file": "002_00314.jpg",
      "brightness": 122.34555555555555
    }
  ]
}