{
  "source": "https://media.xiph.org/video/derf/y4m/hall_monitor_cif.y4m",
  "source_index": "https://media.xiph.org/video/derf/",
  "source_sha256": "d0d4d6ebd137378bb5a7448c04d0cb73c20458a91d41d0f00cb090bd84bedd93",
  "encoded_sha256": "41540e19adf9f965e2f7324519176c0743d7d54dc46eeb16d3d559f16fdc20bd",
  "encoder": "libx264 CRF23 yuv420p",
  "roi": [
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  ],
  "bg": [
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  "summary": {
    "pairs": 299,
    "mean_abs_ratio_minus_one": 0.0009966260305449678,
    "mean_residual_rgb": 1.2752792458585238,
    "flagged_pairs": 0
  },
  "limits": "One fixed surveillance scene; no artificial defects injected. Flags are candidate false alarms requiring visual review, not a broad real-world accuracy estimate."
}