Conciseness

The body is efficient and assumes Claude's competence — it never explains what ffmpeg, fps, or frames are — with concrete commands throughout. Minor trimmable padding exists: the 'Real-World Impact' anecdote (~120 words) and some overlap between 'Common Mistakes' and the workflow steps, which keeps it just below anchor 5. It is not a 3 because there is no concept-explanation fluff and most tokens earn their place.

Actionability

Fully executable guidance: the exact invocation 'extract-frames.sh <url-or-path> [fps] [start] [duration]' plus a Quick Reference covering first-pass, zoom ('extract-frames.sh <url> 10 2 1.5'), local file, and cleanup ('rm -rf <WORKSPACE>', 'git status --porcelain') — matching anchor 5's copy-paste-ready coverage of common cases. It is not a 4 because no key execution detail is missing.

Workflow Clarity

A 6-step numbered checklist with elaboration, explicit validation (step 5 reconcile against the written repro, step 6 'git status --porcelain' repo-cleanliness check), and a feedback loop (step 4 zoom on ambiguity). Because validation IS present, the destructive/batch cap at 3 does not apply. It is not a 4 because checkpoints and an error-recovery loop are explicit, matching anchor 5.

Progressive Disclosure

Well-organized into clear sections (Overview, Workflow, Hard constraints, Quick Reference, Common Mistakes, Real-World Impact) with a single, well-signaled one-level-deep reference to the bundled 'scripts/extract-frames.sh' (verified present). It is not a 5 because the self-contained 'Real-World Impact' anecdote is slightly off-purpose and could be trimmed or moved, leaving a minor organization gap at anchor 4.

Specificity

The description names the domain (issue/PR screen recordings) and one concrete action — 'extracts still frames to a temp dir so you can Read them as images' — matching the anchor-3 pattern of domain + 1-2 actions, but it is reduced by 1 per the rubric's second-person penalty ('you need to know', 'you cannot view video', 'you can Read them'). It is not a 1 because a concrete action is named, and not a 3 because the second-person voice triggers the explicit penalty.

Completeness

Explicitly answers both 'what' ('extracts still frames to a temp dir so you can Read them as images') and 'when' ('Use when a GitHub issue, PR, or bug report links a screen-recording video...', 'Trigger whenever...') with concrete trigger phrases — matching anchor 5. It is not a 4 because both halves are concrete and explicit rather than weakly implied.

Trigger Term Quality

Comprehensive natural-term coverage including synonyms and file extensions: 'video', 'screen recording', 'attachment', 'see the recording', 'linked video', and '.mov/.mp4/.webm' — matching the anchor-5 example. It is not below 5 because both everyday phrasings and extensions are present.

Distinctiveness Conflict Risk

Clear niche — screen recordings attached to GitHub issues/PRs/bug reports, with a distinct URL pattern (github.com/user-attachments/assets/...) and minimal overlap with other skills — matching anchor 5. It is not a 4 because the trigger is tightly scoped with no meaningful overlap risk.