{
  "purpose": "negative controls for the MVS1 multiview entries (registered ranks 55 and 56)",
  "control_a_uncorrelated_views": {
    "clips": [
      "xiph_akiyo_cif",
      "xiph_container_cif",
      "xiph_news_cif",
      "xiph_foreman_cif"
    ],
    "n_views": 4,
    "rows": [
      {
        "base_clip": "xiph_akiyo_cif",
        "reduction_pct": -15.53,
        "shared_subpel_bytes": 298021,
        "simulcast_bytes": 257966
      },
      {
        "base_clip": "xiph_container_cif",
        "reduction_pct": -11.87,
        "shared_subpel_bytes": 288588,
        "simulcast_bytes": 257966
      },
      {
        "base_clip": "xiph_news_cif",
        "reduction_pct": -14.05,
        "shared_subpel_bytes": 294205,
        "simulcast_bytes": 257966
      },
      {
        "base_clip": "xiph_foreman_cif",
        "reduction_pct": -15.6,
        "shared_subpel_bytes": 298210,
        "simulcast_bytes": 257966
      }
    ],
    "mean_reduction_pct": -14.26
  },
  "control_b_stereo_zero_disparity": {
    "n_scenes": 23,
    "zero_disparity": [
      {
        "scene": "Adirondack",
        "reduction_pct": 4.37
      },
      {
        "scene": "Backpack",
        "reduction_pct": 3.93
      },
      {
        "scene": "Bicycle1",
        "reduction_pct": 2.57
      },
      {
        "scene": "Cable",
        "reduction_pct": 1.36
      },
      {
        "scene": "Classroom1",
        "reduction_pct": 8.97
      },
      {
        "scene": "Couch",
        "reduction_pct": -5.03
      },
      {
        "scene": "Flowers",
        "reduction_pct": 2.74
      },
      {
        "scene": "Jadeplant",
        "reduction_pct": -4.61
      },
      {
        "scene": "Mask",
        "reduction_pct": -0.82
      },
      {
        "scene": "Motorcycle",
        "reduction_pct": 1.35
      },
      {
        "scene": "Piano",
        "reduction_pct": 6.54
      },
      {
        "scene": "Pipes",
        "reduction_pct": -2.34
      },
      {
        "scene": "Playroom",
        "reduction_pct": -1.81
      },
      {
        "scene": "Playtable",
        "reduction_pct": 0.17
      },
      {
        "scene": "Recycle",
        "reduction_pct": 5.06
      },
      {
        "scene": "Shelves",
        "reduction_pct": 9.59
      },
      {
        "scene": "Shopvac",
        "reduction_pct": -2.63
      },
      {
        "scene": "Sticks",
        "reduction_pct": 1.09
      },
      {
        "scene": "Storage",
        "reduction_pct": 0.98
      },
      {
        "scene": "Sword1",
        "reduction_pct": 6.22
      },
      {
        "scene": "Sword2",
        "reduction_pct": 8.89
      },
      {
        "scene": "Umbrella",
        "reduction_pct": 11.79
      },
      {
        "scene": "Vintage",
        "reduction_pct": -6.46
      }
    ],
    "reference_disparity_64": [
      {
        "scene": "Adirondack",
        "reduction_pct": 11.52
      },
      {
        "scene": "Backpack",
        "reduction_pct": 13.0
      },
      {
        "scene": "Bicycle1",
        "reduction_pct": 11.42
      },
      {
        "scene": "Cable",
        "reduction_pct": 6.62
      },
      {
        "scene": "Classroom1",
        "reduction_pct": 16.46
      },
      {
        "scene": "Couch",
        "reduction_pct": 1.19
      },
      {
        "scene": "Flowers",
        "reduction_pct": 7.62
      },
      {
        "scene": "Jadeplant",
        "reduction_pct": 5.24
      },
      {
        "scene": "Mask",
        "reduction_pct": 2.36
      },
      {
        "scene": "Motorcycle",
        "reduction_pct": 5.32
      },
      {
        "scene": "Piano",
        "reduction_pct": 16.45
      },
      {
        "scene": "Pipes",
        "reduction_pct": 4.93
      },
      {
        "scene": "Playroom",
        "reduction_pct": 2.88
      },
      {
        "scene": "Playtable",
        "reduction_pct": 8.68
      },
      {
        "scene": "Recycle",
        "reduction_pct": 15.32
      },
      {
        "scene": "Shelves",
        "reduction_pct": 17.17
      },
      {
        "scene": "Shopvac",
        "reduction_pct": -0.55
      },
      {
        "scene": "Sticks",
        "reduction_pct": 7.87
      },
      {
        "scene": "Storage",
        "reduction_pct": 8.0
      },
      {
        "scene": "Sword1",
        "reduction_pct": 12.53
      },
      {
        "scene": "Sword2",
        "reduction_pct": 9.83
      },
      {
        "scene": "Umbrella",
        "reduction_pct": 17.97
      },
      {
        "scene": "Vintage",
        "reduction_pct": -0.59
      }
    ],
    "mean_reduction_pct_zero_disparity": 2.26,
    "mean_reduction_pct_reference": 8.75
  },
  "uncorrelated_views_mean_reduction_pct": -14.26,
  "n_scenes_uncorrelated": 4,
  "stereo_zero_disparity_mean_reduction_pct": 2.26,
  "stereo_reference_mean_reduction_pct": 8.75,
  "n_scenes_stereo": 23,
  "gates": {
    "uncorrelated_below_15pct": true,
    "stereo_zero_disparity_below_6_5pct": true
  },
  "seal": "artifacts/seals/multiview_control_2026-09.seal.json",
  "honest_scope": "Control A removes inter-view correlation, Control B removes the disparity signal; each isolates one half of the mechanism. Luma-only, BASE_STEP 4.0, same packers as the registered runs."
}