{
  "version": 2,
  "output": { "width": 1920, "height": 1080, "fps": 30 },
  "sources": [{ "id": "main", "path": "main.mp4" }],
  "tracks": [{
    "id": "visual",
    "lane": "visual",
    "items": [{
      "id": "clip-1",
      "at": 0,
      "duration": 30,
      "adjust": { "basic": { "gamma": 0.2 } },
      "source": { "kind": "media", "src": "main", "in": 0, "out": 1 }
    }]
  }]
}