Resolve the video-advice contradiction on the two surfaces this step owns
(research/03 D1-D3):
- commands/video.md: rename the "3-Second Test" to a "Muted-Autoplay Test"
(front-load value for ~85% muted viewing; the "three-second hook" is
cross-platform folklore, not a LinkedIn signal); make captions the
enforceable spec (SRT or native auto-captions, indexed for search);
aspect ratio as guidance (4:5/1:1 preferred for broad distribution,
9:16 opt-in for the vertical video tab, crops to 1:1 on desktop); add
MP4-default + warn-only MOV/AVI + official upload limits to the
pre-recording reminder.
- references/linkedin-formats.md: reframe the 9:16 "distribution boost"
as uncorroborated heuristic; 4:5 "deprioritized" -> 4:5/1:1 preferred;
drop the "3-second hook"; MP4 safe-default + warn-only MOV/AVI; replace
"good video rewarded more than ever" with the honest "per-video reach
declining; documents/carousels out-engage video."
algorithm-signals-reference.md (the canonical magnitude source) was
already reconciled in Phase 0 (line 56 reads "declining ... 4:5/1:1
preferred, captions are the enforceable spec") and carries no boost copy,
so it is intentionally untouched here — and it is not in this step's
manifest.
Verify: grep 'must be 9:16|9:16 (1080|3-second hook' video.md
linkedin-formats.md -> none; 'captions' video.md -> 5; 'deprioritized'
linkedin-formats.md -> none; structure lint 61/61.
KNOWN RESIDUAL (flagged for follow-up, NOT in this step's scope):
- references/linkedin-growth-playbook-2025-2026.md:216 still carries a
"9:16 ... distribution boost" line. That file is owned by Step 17, but
Step 17's changes are newsletter-distribution — the video line would
fall through. Fold this into Step 17 or the review gate.
- references/video-strategy-guide.md:300 still says "the 3-second test
determines 70% of retention." That file is owned by NO plan step
(orphaned) — needs a home. Surface at session end for an operator
decision.
Plan Step 15 (Wave 4 S2). Counts unchanged.
[skip-docs]: tre-doc + version bump deferred to Step 21 per remediation plan.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Kjell Tore Guttormsen
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