FFmpeg 8.1.1 for Enchant Dashboard (Windows x64), build-id 27ab91194297

This is the complete corresponding source of the FFmpeg libraries and programs shipped with
Enchant Dashboard for Windows (avcodec-62.dll avformat-62.dll avutil-60.dll avdevice-62.dll
avfilter-11.dll swscale-9.dll swresample-6.dll ffmpeg.exe ffprobe.exe): the unmodified upstream
release ../../ffmpeg-8.1.1.tar.xz (sha256 b6863adde98898f42602017462871b5f6333e65aec803fdd7a6308639c52edf3),
built with the configure line in configure_line.txt by build_ffmpeg_lgpl.sh. We made no changes
to FFmpeg. BINARIES.sha256 lists the files this produced; BUILD_INFO.txt the toolchain and inputs.
The build-id is the first 12 hex digits of the SHA-256 of configure_line.txt without its newline.

Licence: GNU Lesser General Public License version 2.1 or later (../../COPYING.LGPLv2.1).
deps/ holds the sources of what is compiled in: zlib (zlib licence), dav1d (BSD-2-Clause),
nv-codec-headers and AMF headers (MIT), plus the mingw-w64 runtime notice and FFmpeg's signing key.

Rebuild (Linux x86_64, e.g. Ubuntu 24.04 or WSL2; the llvm-mingw toolchain is downloaded and
checked against the sha256 pinned in the script):
  sudo apt-get install -y curl gnupg xz-utils make nasm pkg-config meson ninja-build python3 clang-18
  mkdir -p ~/ffbuild/dl && cp ../../ffmpeg-8.1.1.tar.xz ../../ffmpeg-8.1.1.tar.xz.asc deps/* ~/ffbuild/dl/
  FFMPEG_LGPL_OUT=$PWD/out bash build_ffmpeg_lgpl.sh fetch deps ffmpeg export
  (on Windows, for MSVC import libraries: python make_msvc_import_libs.py <out>)

Use your own build (or a modified FFmpeg) with Enchant Dashboard:
  1. close Enchant Dashboard
  2. copy the DLLs of your build over the ones with the same names in the installation folder
     (default %LOCALAPPDATA%\Programs\Enchant Dashboard) and over those present in its
     engine\ subfolder
  3. start Enchant Dashboard. It loads the DLLs from those folders and does not check their
     contents; keep the same major versions (the file names). An Enchant update puts the
     shipped files back -- copy yours again afterwards.

Toolchain and runtime (not part of FFmpeg; listed so the build can be reproduced exactly):
  llvm-mingw 20260922 (UCRT), the cross compiler and the mingw-w64 runtime linked into the DLLs:
    binary  https://github.com/mstorsjo/llvm-mingw/releases/download/20260922/llvm-mingw-20260922-ucrt-ubuntu-22.04-x86_64.tar.xz
            (sha256 bb7bb7654b33d5aa8712acb837c963b2e0c56352560c76105270a3268c665c21, pinned in build_ffmpeg_lgpl.sh)
    source  https://github.com/mstorsjo/llvm-mingw/tree/20260922
  mingw-w64 runtime licence: deps/COPYING.MinGW-w64-runtime.txt (from mingw-w64 v13.0.0,
    source https://github.com/mingw-w64/mingw-w64/tree/v13.0.0)