ffmpeg SKILL.md skillA
ffmpeg from alivirgo/major-ai-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add alivirgo/major-ai-skills/ffmpeg@git:20261005.2bc0998Pins git:20261005.2bc0998 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- alivirgo/major-ai-skills
- Path
plugins/mas-video-lab/skills/ffmpeg/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261005.2bc0998, committed Oct 5, 2026
- First version recorded
- Aug 26, 2026
- Size
- 4,730 bytes
- Repository stars
- 2
- License
- MIT
Transcode and compress video with FFmpeg, inspect streams with ffprobe, build filtergraphs and HLS outputs, and diagnose codec or hardware-encoder failures.
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 Media Engineering AI Skill Guide (Claude) ## Overview & Engine Architecture FFmpeg (pin **6.x / 7.x / 8.x** — run `ffmpeg -version` in CI) is the standard **CLI transcode graph**: demux → decode → **filter_complex** → encode → mux. Claude acts as Principal Video Engineer: **ffprobe-first**, **BT.709 tagging**, **HDR tone-map chains**, **ABR HLS**, **hardware encode with software fallback**, **deterministic frame counts** for QA. ``` ┌─────────────────────────────────────────────────────────────┐ │ ffprobe JSON → filtergraph → encode → verify tags │ │ SDR web: yuv420p + bt709 metadata + faststart │ │ HDR→SDR: zscale linear → tonemap → zscale bt709 (NOT colorspace alone) │ └─────────────────────────────────────────────────────────────┘ ``` --- ## When to use / when not to **Use when:** mezzanine → delivery transcodes, loudness normalize, HLS/DASH packaging, concat/remux, thumbnail/still extraction, batch folder processing. **Do not use when:** NLE project semantics (use Resolve/Premiere skills); DRM packaging; proprietary camera RAW without documented decoder. --- ## Operational Capabilities & Agent Directives …
Read the whole file at its exact version.
How to install
mdr add alivirgo/major-ai-skills/ffmpeg@sha256:42472e2401ce4b70The line at the top of this page pins the label git:20261005.2bc0998, 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_y6vzdxsnxl4f5dp6)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Aug 26, 2026 and Oct 5, 2026, about one every 20 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261005.2bc0998 latest | 2026-10-05 | 2bc0998 | 4,730 B | A | view · diff |
| git:20260911.25436b5 | 2026-09-11 | 25436b5 | 8,555 B | A | view · diff |
| git:20260826.1e28b95 | 2026-08-26 | 1e28b95 | 8,617 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 (4730 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
alivirgo/major-ai-skills · 2 stars · license MIT · pushed 2026-10-21 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_y6vzdxsnxl4f5dp6 GET https://markdownregistry.com/api/v1/resolve?ref=alivirgo/major-ai-skills/ffmpeg GET https://markdownregistry.com/api/v1/blob/42472e2401ce4b709167d1e2310a20dc2e96e4d0e1a703cb248bb7d82b177af7
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.
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