Audio engine — third-party notices / Avisos de terceros

@ffmpeg/ffmpeg 0.12.15: MIT, copyright (c) 2019 Jerome Wu.
Full notice: /licenses/ffmpeg-wasm-MIT.txt

@ffmpeg/core 0.12.10: GPL-2.0-or-later (not the wrapper's MIT license).
Full GPL v2 text: /licenses/ffmpeg-GPL-2.0.txt
The core is distributed unmodified. Its WASM is gzip-compressed for transport
and decompressed on the device. No multi-thread core is included.
No warranty; see the full license texts.

Corresponding upstream release and source:
https://github.com/ffmpegwasm/ffmpeg.wasm/releases/tag/v12.15
https://github.com/ffmpegwasm/ffmpeg.wasm/tree/v12.15
https://github.com/ffmpegwasm/ffmpeg.wasm/archive/refs/tags/v12.15.tar.gz

Build recipe, source locations and dependency versions:
https://github.com/ffmpegwasm/ffmpeg.wasm/blob/v12.15/Dockerfile
https://github.com/ffmpegwasm/ffmpeg.wasm/tree/v12.15/build
https://github.com/ffmpegwasm/ffmpeg.wasm/tree/v12.15/src

FFmpeg n5.1.4 source and licenses:
https://github.com/FFmpeg/FFmpeg/tree/n5.1.4
https://github.com/FFmpeg/FFmpeg/blob/n5.1.4/LICENSE.md

The upstream core enables GPL code and links libraries beyond the two formats
exposed by this tool. The Dockerfile above is the source inventory for this
distribution: x264 (4-cores), x265 (3.4), libvpx (v1.13.1), LAME (master),
Ogg (v1.3.4), Theora (v1.1.1), Opus (v1.3.1), Vorbis (v1.3.3), zlib (v1.2.11),
libwebp (v1.3.2), FreeType (VER-2-10-4), FriBidi (v1.0.9), HarfBuzz (5.2.0),
libass (0.15.0), zimg (release-3.0.5), built using Emscripten 3.1.40.
Each library retains its copyright and license; see its source repository
identified in that recipe. This tool only exposes MP3 (LAME) and WAV (PCM).

Upstream license explanation:
https://ffmpegwasm.netlify.app/docs/faq/#what-is-the-license-of-ffmpegwasm