Recut's video editor: FFmpeg, compiled to WebAssembly
=====================================================

The files in this folder are loaded by Recut the first time a step edits a video (or writes an MP3)
on your device. They are served from Recut itself and nothing in them contacts a network.

  ffmpeg-core.wasm, ffmpeg-core.js   FFmpeg n5.1.4 and the libraries below, built for Recut
  worker.js                          the worker that runs it (adapted from ffmpeg.wasm, MIT)
  licenses/                          every licence text, the build configuration and the build recipe

What is inside, and under which licence
---------------------------------------

  FFmpeg n5.1.4          LGPL v2.1 or later   https://ffmpeg.org
  OpenH264 v2.6.0        BSD 2-clause         https://github.com/cisco/openh264      (H.264 encoding)
  libvpx v1.13.1         BSD 3-clause         https://chromium.googlesource.com/webm/libvpx
  libvorbis v1.3.3       BSD 3-clause         https://xiph.org/vorbis
  libogg v1.3.4          BSD 3-clause         https://xiph.org/ogg
  LAME                   LGPL v2 or later     https://lame.sourceforge.io             (MP3 encoding)
  libwebp v1.3.2         BSD 3-clause         https://chromium.googlesource.com/webm/libwebp
  zlib v1.2.11           zlib licence         https://zlib.net
  ffmpeg.wasm binding    MIT                  https://github.com/ffmpegwasm/ffmpeg.wasm

FFmpeg was configured without --enable-gpl and without --enable-nonfree (see
licenses/build-configuration.txt), so this build is covered by the GNU Lesser General Public
License, version 2.1 or later. It does not contain x264, x265 or any other GPL component.

This software uses code of FFmpeg (https://ffmpeg.org) licensed under the LGPL v2.1, and its source
can be downloaded from the addresses in licenses/Dockerfile.txt.

Source code and rebuilding
--------------------------

licenses/Dockerfile.txt is the complete recipe this binary was built from. It names the exact
source release or commit of every component and the build options, and fetches them from their
public repositories. With Docker installed, `docker buildx build -o out .` in a folder holding
that file (renamed to Dockerfile) reproduces ffmpeg-core.js and ffmpeg-core.wasm.

FFmpeg and LAME are used as a separate module: Recut loads these files at run time and talks to
them only through FFmpeg's command line. You may replace ffmpeg-core.js and ffmpeg-core.wasm with
your own build of the same interface (createFFmpegCore, as in ffmpeg.wasm 0.12) and Recut will use it.