{
  "id": "extend-mechanisms",
  "title": "More seconds. The same scene?",
  "date": "October 21–28, 2026",
  "scope": "Two completed October 28 deliveries, with earlier failed and partial mechanism comparisons kept in the finding.",
  "changes": [
    [
      "Source prefix",
      "8 seconds, original audio",
      "Same saved source"
    ],
    [
      "Additional footage",
      "+8 seconds",
      "+16 seconds"
    ],
    [
      "Delivered length",
      "16 seconds",
      "24 seconds"
    ],
    [
      "Added soundtrack",
      "Silent after original ends",
      "Silent after original ends"
    ]
  ],
  "details": [
    [
      "Frame accounting",
      "Original 8s = 192 frames at 24fps; outputs 384 and 576 frames"
    ],
    [
      "Source dimensions",
      "942 × 1374; model canvas 896 × 1312"
    ],
    [
      "Audio evidence",
      "Original-audio alignment measured on the prefix; no generated tail soundtrack. Measurement does not establish lip sync."
    ],
    [
      "Earlier comparison",
      "Source/Director/relay examples included held source frames for comparison; a held frame is not source motion beyond the original clip."
    ],
    [
      "Hardware and timing limits",
      "NVIDIA B200 in the saved completed Extend run detail; the +8s job reused the +16s worker."
    ]
  ],
  "configurationFormat": "Study settings summary; not an importable ComfyUI workflow. Requires the private ModelPilot runtime/nodes and separately licensed model weights.",
  "currentAccess": "Extend is account-gated in Studio. Available durations, recipe and spending limits come from your account’s current quote, not from this historical experiment.",
  "prompt": null,
  "sources": [
    {
      "label": "Patricia Stephan, TAF German Bellydance National Championship 2024 — Dance",
      "author": "Shark1989z",
      "url": "https://commons.wikimedia.org/wiki/File:Patricia_Stephan_TAF_German_Bellydance_National_Championship,_2024_-_Dance.webm",
      "license": "https://creativecommons.org/licenses/by-sa/4.0/",
      "changes": "Excerpt from original 25s onward; resampled/prepared for the saved test; audio omitted from public previews. AI-generated extensions are adaptations, not new footage of Patricia Stephan. Copyright permission record: Wikimedia VRT ticket 2024112010013196."
    }
  ],
  "mediaNote": "AI-generated outputs are identified in each comparison. Public previews omit source audio where present; visual streams are unchanged. Original test files and audio measurements remain preserved. No performer or photographer endorses ModelPilot.",
  "media": [
    {
      "url": "/demos/research/extend-plus16-silent.mp4",
      "sha256": "cb9d8d1f9e182b57297d3f773e17cba617f4224529e887dd1e7b54a472d79230",
      "bytes": 24904381,
      "originalSha256": "eb50d9021a9199cda3ab2b62c535a4164b50c5cce6e6adb21b0f7e284e4db9cf"
    },
    {
      "url": "/demos/research/extend-plus8-silent.mp4",
      "sha256": "5c0e5f4d082dd915456e7f8f204f8edac54f1eb57fa7efa9b59ff61073a43d79",
      "bytes": 17979364,
      "originalSha256": "52d0b2a96978a1399490a57a1a398f9235ea8642efb5565fbfefc0fad8fb0c4b"
    },
    {
      "url": "/demos/research/extend-source-audio-silent.mp4",
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      "originalSha256": "5173b328ace1a71f93dee8a5bc8b6f26e0c1dfa05431d41856b9e96b155475c9"
    }
  ],
  "workflowGraphs": []
}