{
  "source_video": "[本机资料路径]",
  "object": "Cylinder001",
  "parameter": "Scale",
  "evidence_type": "visible key properties dialog in original video",
  "keys": [
    {
      "frame": 15,
      "scale_percent": [
        35.597,
        35.597,
        8.405
      ],
      "source_seconds": 1654,
      "image": "/classroom/course-assets/course57-scale-exact/1654.jpg.webp",
      "previous_estimate_percent": [
        36,
        36,
        8.64
      ],
      "image_sha256": "d54212a243a5b8df03757b2f30fd991e3b78046272526f7772e0d8b52d1c374b"
    },
    {
      "frame": 70,
      "scale_percent": [
        109.643,
        109.643,
        144.879
      ],
      "source_seconds": 1660,
      "image": "/classroom/course-assets/course57-scale-exact/1660.jpg.webp",
      "previous_estimate_percent": [
        110,
        110,
        145
      ],
      "image_sha256": "1ec9ab1f361f5c584f8bf982742711c4192276fc14ccb5f151d26e9607a243e4"
    }
  ],
  "precision": "Three displayed decimal places; hidden precision unknown",
  "tangents": "Key15 outgoing curve icon and key70 incoming menu visible; final tangent types and handles require additional verification",
  "native_application": "pending; existing 03 full render must finish before changing scene",
  "frame0": "No key at frame0 shown in reviewed curve; previous supplemental frame0 hold needs review"
}