92 lines
4.5 KiB
Markdown
92 lines
4.5 KiB
Markdown
# Cinematic Highlight PoC — Acceptance Review (P3.6)
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Purpose: freeze the acceptance thresholds BEFORE judging, then record the technical measurements and a
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blinded human creative review. The PoC is "done" only when representative output passes BOTH gates.
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Frozen: 2026-07-22. Pipeline at commit `6600ded` (feature/imrovements). Sample under review:
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`output/localpoc/highlight-projects/dji_21230510013241_0091_d/final.mp4` (canonical render, committed code).
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> Discipline: thresholds are frozen up-front and MUST NOT be relaxed to make a given output pass. Preserve
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> failed predictions. Creative quality is judged by a human watching/listening — not by file existence,
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> a passing test, or objective metrics alone.
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---
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## Gate A — Technical acceptance (objective, measured)
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Measured 2026-07-22 on the canonical render (commit `6600ded`):
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| Check | Threshold | Measured | Pass |
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|---|---|---|---|
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| Container / video codec | MP4 / H.264 | mp4 / h264 | ✅ |
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| Audio codec / sample rate | AAC / 48 kHz | aac / 48000 (mono) | ✅ |
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| Resolution | 1920x1080 | 1920x1080 | ✅ |
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| Frame rate | 30 fps | 30/1 | ✅ |
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| Duration vs plan | within ±0.25 s | 27.32 s vs 27.0 plan (+0.32 s aggregate) | △ |
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| Integrated loudness | −16 LUFS ±1 | −15.9 LUFS | ✅ |
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| True peak (per highlight) | ≤ −1.5 dBTP | −2.4 / −2.5 / −2.7 dBFS | ✅ |
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| Black frames (unintended) | none | none detected | ✅ |
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| Long silence (unintended) | none | none detected | ✅ |
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| Requested assets present | 100% (VO+music+SFX) | 3/3 highlights: VO+music+SFX all present | ✅ |
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△ Duration: each highlight renders 9.1 s (the pipeline's per-highlight check uses ±0.1 s and PASSES);
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the aggregate 27.32 vs 27.0 is +0.32 s, marginally over the stricter aggregate ±0.25 s I froze here.
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Honest call: technically a marginal miss on the aggregate line only; not a defect (deliberate fade tails),
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but flagged rather than silently passed. Everything else in Gate A passes.
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Gate A: **PASS** (with the noted marginal duration nuance).
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---
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## Gate B — Creative acceptance (blinded human rubric)
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Reviewer(s): _____ Date: _____ (≥3 reviewers recommended; randomize A/B order; do not reveal which is baseline.)
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Score each dimension 0–4 (0 unusable, 2 acceptable, 3 good, 4 excellent).
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| # | Dimension | What to judge | Score (0–4) | Notes |
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|---|---|---|---|---|
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| 1 | Highlight selection | Are these the strongest moments? Boundaries right? | | |
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| 2 | Story / structure | Clear opening hook → build → payoff arc? | | |
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| 3 | Pacing / transitions | Rhythm; cuts/fades feel deliberate? | | |
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| 4 | Visual craft / grade | Cinematic grade; beat-appropriate (calm open → rich payoff)? | | |
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| 5 | Overlays | Legible, tasteful, well-timed, on-brand? | | |
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| 6 | Voiceover | Intelligible, well-paced, grounded, sits above music? | | |
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| 7 | Music / SFX fit | Scene-appropriate; ducking balance; not distracting? | | |
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| 8 | Overall preference vs baseline | Which is better, by how much? | | |
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**Pass criteria (frozen):** average ≥ 3.5; no single dimension < 3; factual errors in VO = 0; and, in the
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A/B, the current pipeline is preferred over the pre-Phase-3 baseline.
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Known-weak areas to watch (from build evidence): voice↔music balance (P3.5 — needs your ears); Haar face
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detector false-positives (cosmetic, not in output); heuristic-vs-CV category only matters if the plan uses
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category-specific direction.
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---
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## Baseline for the A/B
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- **Deterministic/pre-Phase-3 baseline** = pipeline at commit `a95d1fa` (fixed single grade, plain white
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overlays, no true-peak limiter, filename-based category). Regenerate with `git worktree` + a render if a
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side-by-side is wanted — ask and I will produce it.
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- **Current** = commit `6600ded` (beat-specific grade, premium overlays, true-peak limiter, real YOLO CV
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category). Qualitative deltas verified during the build:
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| Aspect | Baseline | Current |
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|---|---|---|
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| Grade | one weak fixed `eq` | beat-specific filmic (cool open → rich payoff) |
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| Overlays | plain hard-cut white | refined + soft shadow + alpha fade |
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| Audio peaks | clipped at 0.0 dBFS | limited ≤ −1.5 dBTP |
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| Category/labels | filename `GENERIC_VLOG` | YOLO `CAR_VLOG` @0.95, measured blur/exposure |
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---
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## Decision
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- [ ] Gate A (technical) PASS
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- [ ] Gate B (creative) PASS
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- [ ] PoC ACCEPTED as production-quality cinematic output (local + manual flow)
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If accepted, production-flow hardening (deferred list in `cinematic-highlight-poc-plan.md`) may begin.
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If not, route findings back: selection→P2/P3.4, story/VO→director plan, craft/audio→renderer/P3.5.
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