ffmpeg SKILL.md skillA
ffmpeg from znlgis/opengis-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add znlgis/opengis-skills/ffmpeg@git:20261027.6562616Pins git:20261027.6562616 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- znlgis/opengis-skills
- Path
others/ffmpeg/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261027.6562616, committed Oct 27, 2026
- First version recorded
- Oct 27, 2026
- Size
- 15,224 bytes
- Repository stars
- 78
- License
- MIT
Use when converting, cutting, stitching or streaming video/audio from the command line — ffmpeg -i / -ss / -t, fps and scale filters, CRF and preset for H.264/H.265, -hwaccel decoding, hls muxer with hls_time and hls_segment_filename, RTSP/UDP ingestion, frame extraction for textures. FFmpeg 9.0.2. Also for "moov atom not found", non-monotonic DTS warnings, colour shifts from missing -pix_fmt/-color_range, and ffprobe checks before batch jobs.
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
> **官网：** <https://ffmpeg.org/> > > **官方文档：** <https://ffmpeg.org/ffmpeg.html>（滤镜 <https://ffmpeg.org/ffmpeg-filters.html>，封装格式 <https://ffmpeg.org/ffmpeg-formats.html>） > > **下载：** <https://ffmpeg.org/download.html>（源码与各平台静态构建） > > **包管理器：** `apt install ffmpeg` / `brew install ffmpeg` / `winget install Gyan.FFmpeg` / 官方静态包（最新 9.0.2，截至 2026-10） > > **版本：** 9.0.2（`release/9.0` 分支的最新补丁版）；上一分支 8.1.3，更早 7.1.x | 上游无 GitHub Release tag，版本以 <https://ffmpeg.org/releases/> 与 RELEASE_NOTES 为准 > > **许可证：** LGPL-2.1-or-later（默认）；若构建启用了 `--enable-gpl` 且实际用到 GPL 部分（如 libx264/libx265），整个 FFmpeg 转为 GPL-2.0-or-later——多数发行版与「full build」静态包属于后者，商用集成前先看 `ffmpeg -version` 的构建配置 ## 概述 FFmpeg 是一套处理音视频的命令行工具与库：`ffmpeg` 转码/裁剪/拼接/推流，`ffprobe` 只读探测，`ffplay` 预览。它不做创意编辑，而是把「解码 → 滤镜链 → 编码」这条流水线暴露成参数，适合放进脚本、CI 与批处理。对 GIS/三维场景而言，它最常见的角色是把视频变成「可以计算的东西」：帧序列、纹理、切片、时间戳对齐的影像源。 核心概念只有四个： - **输入输出**：`-i` 声明输入，其余裸参数是输出文件；一个命令可以有多个输入与输出 - **流选择**：`-map` 决定哪些流进入哪个输出（默认每种类型只取一路） - **滤镜链**：`-vf`（视频）/`-af`（音频）/`-filter_complex`（多输入），用逗号串联 - **编解码参数**：`-c:v` / `-crf` / `-preset` / `-pix_fmt` 决定画质与体积 ## 安装 ### 包管理器（推荐，最省事） ```bash # Debian / Ubuntu sudo apt install ffmpeg # macOS brew install ffmpeg # Windows（winget） …
Read the whole file at its exact version.
How to install
mdr add znlgis/opengis-skills/ffmpeg@sha256:6fc0ebd3b5730c9cThe line at the top of this page pins the label git:20261027.6562616, 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_dntb5i7wisuynqkt)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Oct 27, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261027.6562616 latest | 2026-10-27 | 6562616 | 15,224 B | A | view · diff |
| git:20261027.8e03282 | 2026-10-27 | 8e03282 | 14,133 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 (15224 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
znlgis/opengis-skills · 78 stars · license MIT · pushed 2026-10-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dntb5i7wisuynqkt GET https://markdownregistry.com/api/v1/resolve?ref=znlgis/opengis-skills/ffmpeg GET https://markdownregistry.com/api/v1/blob/6fc0ebd3b5730c9cc7d5b233e86af912d6f61aabda4af9c27d52a344eb0a0491
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 znlgis/opengis-skills
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