ffmpeg

ffmpeg

convert, record and stream audio and video

curl -fsSL https://unflab.app/get | sh -s -- ffmpeg

Installs to ~/.local/bin. Add --prefix /usr/local/bin to
put it somewhere else, or --uninstall to remove it.

Why it’s here

Escapes a dependency tree: Homebrew’s build pulls in libraries this tool never touches at run time.

Details

Not built by unflab: the installer downloads that binary from
its publisher, and installs it only if its SHA-256 matches the
one pinned in the recipe and its Developer ID signature is valid.
CI makes the same checks, and confirms it links against
nothing outside /usr/lib and /System/.

FFmpeg 9.0.2 for Apple Silicon, as three standalone binaries that each
install on their own. Each one links against nothing outside the base
system.

Where the binary comes from

unflab doesn’t build these. They are Martin Riedl’s static builds from
ffmpeg.martin-riedl.de, made with
his open build script
(git.martin-riedl.de/ffmpeg/build-script).

This package holds the man pages, the licence and this README. When you
install it, its install.sh downloads the binary from Martin Riedl’s
site and keeps it only if both of these hold:

• its SHA-256 matches the one pinned in unflab’s recipe, which is the
  exact file unflab’s CI checked;
• it carries a valid Apple Developer ID signature from Martin Riedl’s
  team (KU3N25YGLU).

If either check fails, nothing is installed. CI makes the same two
checks, and also confirms that every binary links only against /usr/lib
and /System/.

We’d encourage supporting Martin’s efforts and hosting costs with a
donation to his PayPal account, as
indicated at the bottom of his build page.

What’s in it

Codecs and libraries: x264, x265 (8, 10 and 12-bit), aom, dav1d,
rav1e, SVT-AV1, vvenc, openh264, libvpx, libwebp, OpenJPEG, LAME,
Opus, Vorbis and Theora. Filters and other libraries: libvmaf, zimg,
libass with FreeType, fontconfig and HarfBuzz, SRT, libbluray, zvbi,
libklvanc, snappy, libxml2 and OpenSSL.

macOS frameworks: VideoToolbox (hardware decode, plus the
h264_videotoolbox, hevc_videotoolbox and prores_videotoolbox
encoders) and AudioToolbox (aac_at).

ffmpeg -buildconf prints the full configuration.

Worth knowing

• Size. Every library is linked into every binary, so each one is
  about 65 MB. The three are separate packages so you can install only
  the ones you need.
• Licence. The build is GPLv3 (--enable-gpl --enable-version3)
  and contains nothing nonfree. The corresponding FFmpeg source is the
  release tarball at
  ffmpeg.org/releases,
  and the libraries’ versions are pinned in Martin Riedl’s build script.
• Man pages. man ffmpeg and man ffmpeg-all are installed with
  ffmpeg, along with the component pages that the other tools also
  refer to: ffmpeg-filters, ffmpeg-codecs, ffmpeg-formats,
  ffmpeg-protocols, ffmpeg-devices, ffmpeg-bitstream-filters,
  ffmpeg-utils, ffmpeg-scaler and ffmpeg-resampler. ffprobe and
  ffplay install their own page and their -all page, which already
  includes the component text.
• Versions. A new FFmpeg release reaches unflab only after Martin
  Riedl has published a build of it, and it’s been noticed and merged
  into unflab.
• More features. If you have need for a more fully-featured build
  of FFmpeg, in addition to their standard ffmpeg formula
  which is of similar capability to this version, Homebrew have a more
  extensive ffmpeg-full formula.