ffmpeg SKILL.md skillA
ffmpeg from magnus919/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add magnus919/agent-skills/ffmpeg@git:20260908.b4669acPins git:20260908.b4669ac in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- magnus919/agent-skills
- Path
ffmpeg/SKILL.md- Versions recorded
- 10
- Latest version
- git:20260908.b4669ac, committed Sep 8, 2026
- First version recorded
- Sep 1, 2026
- Size
- 12,020 bytes
- Repository stars
- 140
- License
- MIT
Use this skill for local FFmpeg/FFprobe media inspection, remuxing, transcoding, filtering, evidence-bounded video review, transcript-assisted editorial plans, edit decision lists, podcast/audio cleanup, rendering, and output acceptance. It emphasizes explicit stream selection, source preservation, build-aware commands, bounded evidence, and verified new outputs. Do not use it for libav API programming, opaque whole-video understanding, automatic publishing, rights clearance, DRM…
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
# FFmpeg Expert Treat FFmpeg as a typed media pipeline and media editing as an evidence-driven workflow. Inspect the actual source, separate measurements from interpretations, make decisions reviewable, render to a new path, and verify at the intended boundary. ## When Not to Use - Do not use this skill for libav API programming, opaque whole-video semantic understanding, automatic publishing, rights clearance, DRM circumvention, professional broadcast/color certification, or HyperFrames-authored compositions. - Route online media or transcript acquisition to the owning source skill, semantic frame interpretation to a vision-capable reviewer, and platform upload/API work to the platform skill. ## Boundaries and Routing - Use a YouTube/transcript capability to acquire online video or transcripts; return here only for local supplied media and transcript artifacts. - Use HyperFrames for HTML-authored motion graphics or composition; use this skill to inspect and preprocess its media inputs or verify rendered outputs. - Use the named platform skill for upload, publishing, account, or API operations. …
Read the whole file at its exact version.
How to install
mdr add magnus919/agent-skills/ffmpeg@sha256:d9da55f12398cf33The line at the top of this page pins the label git:20260908.b4669ac, 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.
[](https://markdownregistry.com/a/art_7tbqqzq32i5xowhc)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 10 versions of this file, between Sep 1, 2026 and Sep 8, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260908.b4669ac latest | 2026-09-08 | b4669ac | 12,020 B | A | view · diff |
| git:20260908.a411903 | 2026-09-08 | a411903 | 11,611 B | A | view · diff |
| git:20260908.21110d3 | 2026-09-08 | 21110d3 | 11,201 B | A | view · diff |
| git:20260908.28c820d | 2026-09-08 | 28c820d | 10,773 B | A | view · diff |
| git:20260908.f28c4b5 | 2026-09-08 | f28c4b5 | 10,455 B | A | view · diff |
| git:20260902.de968df | 2026-09-02 | de968df | 9,363 B | A | view · diff |
| git:20260902.3b416dd | 2026-09-02 | 3b416dd | 8,826 B | A | view · diff |
| git:20260901.bef51fd | 2026-09-01 | bef51fd | 5,555 B | A | view · diff |
| git:20260901.f92cf52 | 2026-09-01 | f92cf52 | 5,290 B | A | view · diff |
| git:20260901.02d6189 | 2026-09-01 | 02d6189 | 5,079 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12020 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
magnus919/agent-skills · 140 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7tbqqzq32i5xowhc GET https://markdownregistry.com/api/v1/resolve?ref=magnus919/agent-skills/ffmpeg GET https://markdownregistry.com/api/v1/blob/d9da55f12398cf33b245bc32507d2d920528956cf8f5b06c517bf1d850735aca
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.
More from magnus919/agent-skills
Every file in magnus919/agent-skills