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clip-hand-skill SKILL.md skillA

clip-hand-skill from librefang/librefang is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add librefang/librefang/clip-hand-skill@v2.0.0

Pins v2.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: librefang/librefang
Path: crates/librefang-runtime/tests/fixtures/registry/hands/clip/SKILL.md
Versions recorded: 1
Latest version: v2.0.0, committed Jul 10, 2026
Size: 16,496 bytes
Repository stars: 393
License: MIT

Expert knowledge for AI video clipping — yt-dlp downloading, whisper transcription, SRT generation, and ffmpeg processing.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Video Clipping Expert Knowledge

## Cross-Platform Notes

All tools (ffmpeg, ffprobe, yt-dlp, whisper) use **identical CLI flags** on Windows, macOS, and Linux. The differences are only in shell syntax:

| Feature | macOS / Linux | Windows (cmd.exe) |
|---------|---------------|-------------------|
| Suppress stderr | `2>/dev/null` | `2>NUL` |
| Filter output | `\| grep pattern` | `\| findstr pattern` |
| Delete files | `rm file1 file2` | `del file1 file2` |
| Null output device | `-f null -` | `-f null -` (same) |
| ffmpeg subtitle paths | `subtitles=clip.srt` | `subtitles=clip.srt` (relative OK, absolute needs `C\\:/path`) |

IMPORTANT: ffmpeg filter paths (`-vf "subtitles=..."`) always need forward slashes. On Windows with absolute paths, escape the colon: `subtitles=C\\:/Users/me/clip.srt`

Prefer using `file_write` tool for creating SRT/text files instead of shell echo/heredoc.

---

## yt-dlp Reference

### Download with Format Selection
```
# Best video up to 1080p + best audio, merged
yt-dlp -f "bv[height<=1080]+ba/b[height<=1080]" --restrict-filenames -o "source.%(ext)s" "URL"

# 720p max (smaller, faster)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add librefang/librefang/clip-hand-skill@sha256:8367a34a90461ddc

The line at the top of this page pins the label v2.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_nz4xjzvrnw4qv3wc.svg)](https://markdownregistry.com/a/art_nz4xjzvrnw4qv3wc)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Jul 10, 2026.

version	committed	commit	size	audit
v2.0.0 latest	2026-07-10	cde7edb	16,496 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (16496 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

librefang/librefang · 393 stars · license MIT · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_nz4xjzvrnw4qv3wc
GET https://markdownregistry.com/api/v1/resolve?ref=librefang/librefang/clip-hand-skill
GET https://markdownregistry.com/api/v1/blob/8367a34a90461ddccf6dc216e04bfa7b580653eb6cab00840476097b500a1330

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.