macOS
brew install ffms2local Homebrew formula metadata
sudo port install ffms2MacPorts ports tree · multimedia/ffms2/Portfile · source: api.github.com
brew
Libav/ffmpeg based source library and Avisynth plugin. Version 5.0 via Homebrew; verified 2026-06-28.
install
brew install ffms2local Homebrew formula metadata
sudo port install ffms2MacPorts ports tree · multimedia/ffms2/Portfile · source: api.github.com
sudo apk add ffms2Alpine Linux edge package indexes · ffms2 · source: dl-cdn.alpinelinux.org
sudo apt install ffmsindexDebian stable package indexes · ffmsindex · source: deb.debian.org
sudo dnf install ffms2Fedora Rawhide package metadata · ffms2 · source: dl.fedoraproject.org
sudo pacman -S ffms2Arch Linux sync databases · ffms2 · source: geo.mirror.pkgbuild.com
sudo zypper install ffmsindexopenSUSE Tumbleweed package metadata · ffmsindex · source: download.opensuse.org
overview
Libav/ffmpeg based source library and Avisynth plugin
history
FFMS2, also called FFmpegSource, is a cross-platform wrapper library around FFmpeg plus Avisynth and VapourSynth source plugins for frame- and sample-accurate media access.
The project originated as an Avisynth file-reader plugin named FFmpegSource; its README explains that version 1 was only an Avisynth plugin and that FFMS2 grew into the reusable library form. Internally it is C++, while the public API is pure C, making it linkable from C-compatible applications.
FFMS2 has historically tracked FFmpeg and Libav API churn closely. Its changelog records support for recent FFmpeg builds, VapourSynth support in the 2.18 era, API and index improvements across the 2.x releases, removal of old Libav support in 2.40, and a 5.x line that raised minimum FFmpeg requirements.
The package matters most in video scripting and fansubbing-adjacent workflows where Avisynth or VapourSynth scripts need reliable opening, indexing, seeking, VFR handling, Unicode path handling, and access to FFmpeg's broad demuxer and decoder support. Package managers expose the ffmsindex tool and the library/plugin pieces so scripts can build repeatable indexes before frame access.
End users most visibly use FFMS2 through the Avisynth or VapourSynth source plugin, while developers can link the C API. The ffmsindex executable builds index files so later frame and audio access can be deterministic instead of relying on ad hoc seeking through containers.
FFMS2 is a dependency-sensitive media package: it wraps FFmpeg, but its value is hiding FFmpeg API complexity from script authors and applications. The changelog's repeated compatibility entries explain why packagers care about aligning FFMS2 releases with the FFmpeg versions in the same repository.
security posture
library-like package without higher-risk signals.
green risk · low confidence · appliance
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
ffmsindex | cli | global executable |
freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
install metadata
| Package key | brew:ffms2 |
|---|---|
| Version | 5.0 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/ffms2 |
| Homepage | https://github.com/FFMS/ffms2 |
| Repository | https://github.com/FFMS/ffms2 |
| Upstream docs | https://github.com/FFMS/ffms2#readme |
| License | GPL-2.0-or-later |
| Source archive | https://github.com/FFMS/ffms2/archive/refs/tags/5.0.tar.gz |
| Last updated | 2026-06-28T01:04:18-04:00 |
| Pulse | updated |
| Dependencies | ffmpeg |
| Build dependencies | autoconf, automake, libtool, pkgconf, python@3.14 |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | ffms2 |
| Version Scheme | 0 |
| Revision | 4 |
| Head Version | HEAD |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
ffmsindex 5.0-1+b1
Command line tool to create ffms2 index files
sudo apt install ffmsindexlibffms2-5 5.0-1+b1
Cross platform ffmpeg wrapper library
sudo apt install libffms2-5libffms2-dev 5.0-1+b1
Development files for libffms2
sudo apt install libffms2-devffmsindex 5.0~rc2-1build1
Command line tool to create ffms2 index files
sudo apt install ffmsindexlibffms2-5 5.0~rc2-1build1
Cross platform ffmpeg wrapper library
sudo apt install libffms2-5libffms2-dev 5.0~rc2-1build1
Development files for libffms2
sudo apt install libffms2-devffms2 5.0-r2
Cross-platform wrapper library around FFmpeg
sudo apk add ffms2ffms2-dev 5.0-r2
Cross-platform wrapper library around FFmpeg (development files)
sudo apk add ffms2-devffms2-doc 5.0-r2
Cross-platform wrapper library around FFmpeg (documentation)
sudo apk add ffms2-docffms2 5.0-8.fc44
Video source library for easy frame accurate access
sudo dnf install ffms2ffms2-devel 5.0-8.fc44
Development package for ffms2
sudo dnf install ffms2-develffms2 5.0-3
A libav/ffmpeg based source library and Avisynth plugin for easy frame accurate access
sudo pacman -S ffms2ffmsindex 5.0+0-1.10
Wrapper library around libffmpeg
sudo zypper install ffmsindexlibffms2-5 5.0+0-1.10
Wrapper library around libffmpeg
sudo zypper install libffms2-5libffms2-devel 5.0+0-1.10
Wrapper library around libffmpeg
sudo zypper install libffms2-develffms2
sudo port install ffms2source trail
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View the package source record on GitHub.