HS Blessing 1.0.7 - corresponding media-library source

The supplied FFmpeg DLLs use LGPL 2.1-or-later dynamic linking. Only the two
explicit external libraries zlib (zlib licence) and dav1d (BSD-2-Clause) are
enabled; GPL, nonfree and external autodetection are disabled. All native LGPL
decoders and x86 NASM optimizations remain enabled. No HS licensing code or
private signing key is part of this archive.

Source revisions and exact binary SHA-256 hashes are in source-manifest.json.
FFmpeg upstream: https://ffmpeg.org/ and https://github.com/FFmpeg/FFmpeg
zlib upstream: https://github.com/madler/zlib
dav1d upstream: https://code.videolan.org/videolan/dav1d

Changes: FFmpeg configure accepts the localized Chinese MSVC compiler/linker
banner, and emits an ASCII compiler identification string for Windows RC.
The complete already-patched source and a reviewable patch are both included.
No changes were made to FFmpeg's IJG-derived JPEG files.

Build recipe (Windows x64):
1. Extract this archive into an isolated work directory; put its source/
   directory, zlib-source/ and dav1d-source/ below BUILD_ROOT.
2. Use Visual Studio 2022 MSVC 19.44.35228 with Windows SDK 10.0.26100.0,
   CMake/Ninja, a portable MSYS2 environment with GNU Make 4.4.1, NASM 3.02
   and pkgconf 3.0.7, plus Python with Meson 1.9.1. These are build tools,
   not additional runtime DLLs shipped with the product.
3. The supplied scripts/build-blessing-media.ps1 and .sh are the exact recipe.
   Adjust only the build-root/tool paths to your machine. The recipe uses
   TEMP/hs-blessing-ffmpeg-20261002 and places its portable MSYS2 under msys64,
   and the Meson Python environment under build-python. Keep scripts/ together.
4. Run the PowerShell recipe; zlib and dav1d build as static COFF archives with
   the MT runtime, then FFmpeg builds as the five shared libraries. The two
   .lib aliases are copies of zlib/dav1d archives to match MSVC pkg-config names.
5. Results are in BUILD_ROOT/ffmpeg-install. Headers, .def and import libraries
   are installed too. HS loads compatible DLLs dynamically from its resources/
   blessing folder; it does not enforce their build-time hashes at runtime.

For LGPL components you may modify and replace compatible libraries, and
reverse-engineer the combined application as necessary to debug modifications
to those components. HS proprietary restrictions do not revoke third-party
licence rights; HS membership/device checks on its own features still apply.

FFmpeg COPYING.LGPLv2.1, COPYING.GPLv2, LICENSE.md, dependency licences and the
complete build sources are supplied. This software is based in part on the
work of the Independent JPEG Group. All copyright notices remain in source.
