Skills/ClawHub/short-form-ffmpeg-cookbook

short-form-ffmpeg-cookbook@1.0.6

CAUTION· static only

Publisher claims: "Short-form FFmpeg cookbook: copyable commands for Reels. Turns raw footage into a 1080×1920 9:16 MP4 for Reels, TikTok and Shorts with burned-in captions (SRT or ASS), trims and joins clips, and lays music under the voice with ducking. Every command was run on test media. Free and local; works in Claude Code, Codex and Grok, or on the varg ffmpeg tool (credits) when the agent has no shell. Use when the user wants to crop to vertical, burn subtitles, cut or join clips, or add background music with FFmpeg. NOT for animated word-by-word captions (use Remotion or HyperFrames caption skills) or for choosing an editing service (use varg-video-editing)." Observed in sandbox: static analysis only — behavior not yet observed.

Registry ClawHubPublisher vargai · publishing for 215 daysInstalls 392Last detonated 18 h ago
What would fix thisWatchDispute verdict

Coverage

Static only; nothing was run yet.

The label rests on the code, the instruction files and the publisher. The honeypot run replaces this verdict when it completes.

Is [email protected] safe to install?

KillerSkills analysed it statically (a sandbox run is pending) on 2026-11-13 and scored it 63/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: HTML comment carrying imperative instructions to the agent. Summary: static analysis only — behavior not yet observed.

Behavior trace

Queued for honeypot run · static analysis only
t+CategoryObserved action

This version has not been detonated yet. The score above counts behavior as unknown (50/100), so it cannot read Verified until the honeypot run completes and replaces this verdict.

Static findings

CRITICAL
HTML comment carrying imperative instructions to the agentREADME.md:1 · HTML comment carrying imperative instructions to the agentGenerated by .github/readme/build.ts from SKILL.md files and .github/readme/*.json. Edit those and run `bun .github/readme/build.ts`; CI fails when this file isFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST01
MEDIUM
npx invocation of non-well-known packageSKILL.md:21 · npx invocation of non-well-known package — may execute untrusted codeif it prints nothing, use `brew install ffmpeg-full`, a static build or `npx ffmpeg-static`.Fix: Pin versions and sources; vendor anything fetched at install time.
AST06

Cost to the agent

Instructions loaded
≈1,368 tok
1 file · 2 in bundle

Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.

Known vulnerabilities

Vulnerability advisories (OSV) cover npm and PyPI packages; this registry has no advisory database.

What would make this Verified

17 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%
  1. Unclaimed publisher≈ +8 on the totalClaim vargai: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
  2. Hidden instructions≈ +6 on the totalRemove HTML comments, zero-width characters and white-on-white text that carry instructions. Everything the agent is meant to read should be visible to the person reading the file.
  3. npx invocation of non-well-known package≈ +2 on the totalPin versions and sources; vendor anything fetched at install time.
Publish a new version to ClawHub, then queue it here. Not your skill? Claim the handle to get verdict changes by email.Claim vargaiPropose a patch to the maintainer