/motion-review

name: motion-review
description: "Use when judging a rendered film (draft or master) from its frames alone — review pack (ffprobe, stills at 0.0/0.5/1.5 s/mid/last, one still per cut, area-weighted OKLCH planes per still, opacity-blend and drift detection, motion energy, cuts, gesture-free runs and gesture onsets per second, genre + look.md copies), hard-fails checked first (Flat F1-F11 incl. value contrast, display type, centered composition, type scale, mid-tone, full bleed, gesture-free span > 0.75 s, under-animated < 1 onset/s; Motion M1-M3 crossfade/drift/zoom yo-yo; Decorative effect D1-D9 incl. decorative blur, bouncy overshoot, ambient or unproven 3D; Legibility L1-L4; Slop X1-X4; Safety S1-S6), 9-criterion rubric (hook, one idea, motion behaviours, tempo grid, CTA hold, accent, phone legibility, sound-off, look.md consistency) with 1/5/10 anchors, symptom → cause table, and the fixed PASS/REVISE/FAIL/UNCERTAIN verdict."
versions:
  fuse-motion: "1.1.0"
  ffmpeg: "9.0.2"
user-invocable: true
references: references/review-pack.md, references/hard-fails.md, references/hard-fails-example.md, references/rubric.md, references/symptom-cause.md, references/verdict-format.md, references/templates/review-pack-script.md
related-skills: motion-art-direction, motion-method, motion-craft, motion-render, motion-assets, fuse-design:design-review

<objective> The judging half of the fuse-motion pipeline. `motion-critic` uses it on every draft (before owner gate G2) and on the master (before the "done" claim). The critic sees what a stranger scrolling a feed would see: frames. It never sees the brief's message or the scene source. The only non-frame inputs are the `genre:` line of the brief and the locked look (`look.md`, `refs.md`, `board.png` from `motion-art-direction`), copied into the pack.

Richness comes from value contrast, type as a large object, composition and rhythm. Flatness is a **hard-fail**, not a low score. A lone paper plane with small objects, display type under 180 px, a TYPE_SCALE under 4, a centered hero, mid-tone fills, too few full-bleed fields, a span over 0.75 s with no gesture (final CTA still over 1.2 s), fewer than 1 gesture onset per second, a drift and a crossfade each fail the film. So does any decorative effect, with no exception (the bounded swap blur, master motion blur, ≤ 3 % overshoot and purposeful 3D are not effects). Hard-fails come first, then 9 scored criteria. PASS = no hard-fail, every scored criterion ≥ 7 and a mean ≥ 8.0. ffmpeg missing → UNCERTAIN. One pass only. </objective>

Motion Review

Agent Workflow (MANDATORY)

1. **Builder** runs `bash .motion/review-pack.sh <video>` (template below) and hands the critic only: video path, `.motion/review/`, byte budget, expected pix_fmt. 2. **Critic** reads `ffprobe.json` first; ffprobe/ffmpeg missing → **UNCERTAIN**, stop. Then `genre.txt` (missing → `assumed ad`). 3. **Restate** the message in one sentence from the frames — before opening the rubric. 4. **Hard-fails first** ([hard-fails.md](references/hard-fails.md)): confirm or reject each `flags.txt` candidate on frames with the critic-safe checks ([review-pack.md](references/review-pack.md)). Check every F, M, D, L, X (by genre) and S row. 5. **Read the look** (`look.md`, `refs.md`, `board.png` in the pack), then **score** the 9 criteria ([rubric.md](references/rubric.md)); map weak scores via [symptom-cause.md](references/symptom-cause.md). 6. **Emit** the block in [verdict-format.md](references/verdict-format.md) — hard-fails listed first. Stop.

---

Overview

| Step | Input | Output | Reference | |------|-------|--------|-----------| | Pack | video + `.motion/brief.md` (genre line), `look.md`, `refs/` | facts, stills, beats, planes, mix, drift, energy, cuts, freezes, flags, copies | [review-pack.md](references/review-pack.md) | | Gate | pack | F / M / D / L / X / S list | [hard-fails.md](references/hard-fails.md) | | Score | pack + look copies | 9 scores 1-10 with frame refs | [rubric.md](references/rubric.md) | | Diagnose | scores < 7, hard-fails | symptom → cause → fix rows | [symptom-cause.md](references/symptom-cause.md) | | Decide | all of the above | one verdict block | [verdict-format.md](references/verdict-format.md) |

---

Critical Rules

1. **Intake = the pack** — frames, pack text files, `genre.txt` and the look copies. Never the brief's body, beat map, facts, scene code or builder notes; a leak is discarded and reported as `intake_leak: yes`. 2. **Message before rubric** — no one-sentence restatement → FAIL. 3. **Hard-fails decide first** — any F, M, D, L, X (ad) or S row → FAIL whatever the mean. 4. **Flatness and decoration are never scored** — F2-F10 and D1-D9 are hard-fails even when look.md asks for them; floors equal the look.md dials, in px at 1080 wide and OKLCH L. 5. **Evidence per score** — every score and finding cites a timestamp or pack image. 6. **PASS is strict** — no hard-fail, every scored criterion ≥ 7, mean ≥ 8.0; never rounded up. 7. **One pass, no code** — name symptom, cause and fix direction; the builder fixes.

---

Architecture

.motion/
├── brief.md                            ← motion-method (only its genre: line reaches the pack)
├── look.md  refs/{board.png,refs.md}   ← motion-art-direction (locked before scene code)
├── review-pack.sh + review-pack-lib.sh ← review-pack-script.md (builder runs it)
├── out/draft.mp4 | master.mp4
└── review/                             (generated, gitignore)
    ├── ffprobe.json  genre.txt         facts — read first
    ├── still-0.0|0.5|1.5|mid|last.png  hook window, middle, end card
    ├── beat-NN.png                     one still per state between cuts
    ├── contact.png  strip-01..12.png  strip.png  phone-390.png
    ├── planes.txt                      per still: planes, vc, field, mid, cx, bleed (F2 F4 F7 F9 F10)
    ├── mix.txt  drift.txt              opacity blends (M1, F1); sub-threshold motion (M2)
    ├── diff.