ffmpeg-cli

ffmpeg-cli is a skill for Claude Code, Codex from henkisdabro/wookstar-claude-plugins. It costs 174 tokens per session (1,788 once invoked), scanned B, original, no licence file.

A reference for using FFmpeg from the command line. FFmpeg is a tool for processing video and audio files.

In plain words
What is it for?
Use it to convert formats, resize or crop video, trim clips, edit or mix audio, add overlays or subtitles, and create GIFs.
Why use it?
It helps avoid having to remember the commands for common media-processing tasks.

Skill for Claude CodeCodex

Part of the ffmpeg plugin — 1 skill shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/henkisdabro/wookstar-claude-plugins/ffmpeg-cli
Any agent
npx skills add henkisdabro/wookstar-claude-plugins --skill ffmpeg-cli
Clone the repo
git clone --depth 1 https://github.com/henkisdabro/wookstar-claude-plugins

Made for: Claude Code, Codex.

Or install ffmpeg, the plugin that ships this one along with the rest of its 1 skill.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ffmpeg-cli

README.md
[![agentmods](https://agentmods.dev/badge/skills/henkisdabro/wookstar-claude-plugins/ffmpeg-cli.svg)](https://agentmods.dev/skills/henkisdabro/wookstar-claude-plugins/ffmpeg-cli)
Your own site
<a href="https://agentmods.dev/skills/henkisdabro/wookstar-claude-plugins/ffmpeg-cli"><img src="https://agentmods.dev/badge/skills/henkisdabro/wookstar-claude-plugins/ffmpeg-cli.svg" alt="Measured on agentmods" height="20"></a>
Per session 174 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,788 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00174 $0.01788
Opus 5 $0.00087 $0.00894
Sonnet 5 $0.00035 $0.00358
Haiku 4.5 $0.00017 $0.00179

Measured 5d ago against content hash 2ee1818b3027, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

ffmpeg-cli scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo apt install ffmpeg
plugins/ffmpeg/skills/ffmpeg-cli/SKILL.md · 170 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 170 lines · 174 tokens per session scan B 2ee1818b3027

Subscribe to this mod's changes

ffmpeg-cli is a skill published in the GitHub repository henkisdabro/wookstar-claude-plugins (84 stars, last pushed 14d ago), with no licence file. It adds 174 tokens to every session and 1,788 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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