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vgmstream build help

This document explains how to build each of vgmstream's components and libraries.

Compilation requirements

vgmstream can be compiled using one of several build scripts that are available in this repository. Components are detailed below, but if you are new to development you probably want one of these:

Because each module has different quirks one can't use a single tool for everything. You should be able to build most using a standard compiler (GCC/MSVC/Clang) using common build systems (scripts/CMake/autotools) in any typical OS (Windows/Linux/macOS).

64-bit support should work but hasn't been throughly tested (may have subtle decoding bugs in some codecs), since most used components are plugins for 32-bit players. Windows libraries for extra codecs are included for 32-bit only at the moment.

Though it's rather flexible (like using Windows with GCC and autotools), some combos may be a bit more complex to get working depending on your system and other factors.

Quick guide

Linux

  • Use these commands to install dependencies and compile with CMake + make
sudo apt-get update
# base deps
sudo apt-get install -y gcc g++ make cmake build-essential git
# optional: for extra formats (can be ommited to build with static libs)
sudo apt-get install -y libmpg123-dev libvorbis-dev libspeex-dev
sudo apt-get install -y libavformat-dev libavcodec-dev libavutil-dev libswresample-dev
sudo apt-get install -y yasm libopus-dev pkg-config autoconf libtool-bin
# optional: for vgmstream 123 and audacious
sudo apt-get install -y libao-dev audacious-dev

git clone https://github.com/vgmstream/vgmstream
cd vgmstream

mkdir -p build
cd build
cmake ..
make
  • Output files are located in ./build and subdirs
  • May use ./make-build-cmake.sh instead (same thing)
    • autotools and simple makefiles also work (less libs)

macOS

  • Should work with CMake + make, like the above example
    • Replace apt-get intall with manual installation of those deps
    • Or with Homebrew: brew install cmake mpg123 libvorbis ffmpeg libao
  • May try https://formulae.brew.sh/formula/vgmstream instead (not part of this project)

Windows

  • Install Visual Studio (VS): https://www.visualstudio.com/downloads/ (for C/C++, include "MFC support" and "ATL support")
    • Currently defaults to VS 2019 and Win 10/11
  • If you don't have VS 2019 and Win 10/11 you'll need to change project's defaults
    • Manually open .sln and change them in Visual Studio
    • Or make a file called msvc-build.config.ps1 in vgmstream's source root, with your installed toolset and SDK:
# - toolsets: "" (default), "v140" (VS 2015), "v141" (VS 2017), "v141_xp" (XP support), "v142" (VS 2019), etc
# - sdks: "" (default), "7.0" (Win7 SDK), "8.1" (Win8 SDK), "10.0" (Win10 SDK), etc
$toolset = "142"
$sdk = "10.0"
  • Execute file msvc-build-package.bat to compile
  • Output files are located in ./bin

Full guide

This guide is mainly geared towards beginner devs, introducing concepts in steps. Many things may be obvious to experienced devs, so feel free to skim or skip sections.

GCC / Make (compiler)

Common C compiler, most development is done with this.

On Windows you need one of these:

  • Standalone MinGW-w64, with MSVCRT runtime:
    • Example config: gcc-12.2.x, i686/x86_64 (32-bit), win32/posix (threads), dward/sehs
      • UCRT runtime is better but only installed by default in Windows 10
    • Sourceforce project (max 8.x, outdated)
    • Alt builds (12.x)
    • Various flavors plus Clang (12.x)
    • Despite the name and config used, works and creates files for 32 or 64-bit Windows as needed
    • Also get Git for Windows (described later), as it includes program that make compiling with GCC easier.
    • Make sure the following are on Windows' PATH variable:
      • C:\mingw-w64\i686-12.2.0-release-win32-sjlj-rt_v10-rev0\mingw32\bin (path to GCC compiler)
      • C:\Git\usr\bin (from Git, extra Linux utils for Windows)
      • You can add temp PATH vars in CMD/.bat by typing set PATH=%PATH%;C:\(path)\)
  • MSYS2 environment, with extra required packages
    • Open the msys2/mingw32.exe (or msys2/mingw64.exes) console
      • using regular msys2/msys2.exe may create binaries that depend on msys*.dll?
    • may need to install dependencies using:
      • pacman -S git gcc make autotools (also mingw-w64-i686/mingw-w64-x86_64?)

On Linux it should be included by default in the distribution, or can be easily installed using the distro's package manager (for example sudo apt-get install gcc g++ make).

On macOS may be installed with a package manager like Homebrew, but using Clang is probably easier.

Any versions that are not too ancient should work, since vgmstream uses standard C. GCC usually comes with Make, a program that can be used to build vgmstream.

Microsoft's Visual C++ (MSVC) / Visual Studio / MSBuild (compiler)

Alt C compiler (Windows only), auto-generated builds for Windows use this. Bundled in:

Visual Studio Community (free) should work, but you may need to register after a trial period. Even after trial you can still use MSBuild, command-line tool that actually does all the building, calling the MSVC compiler (Visual Studio itself is just an IDE for development and not actually needed).

Instead of the full (usually huge) Visual Studio, you can also get "Build Tools for Visual Studio", variation that only installs MSBuild and necessary files without the IDE. Usually found in the above link, under "Tools for Visual Studio" (or google as MS's links tend to move around).

When installing check the "Desktop development with C++" group, and optionally select "MFC support" and "ATL support" sub-options to build foobar2000 plugin (you can modify that or re-install IDE later, by running installed "Visual Studio Installer"). You can include MSVC v142 (2019) toolset, too, just in case, since it's mainly tested with that.

Older versions of MSVC (2010 and earlier) have limited C support and may not work with latest commits, while reportedly beta/new versions aren't always very stable. Also, only projects (.vcxproj) for VS2015+ are included (CMake may be able to generate older .vcproj if you really need them). Some very odd issues affecting MSVC only have been found and fixed before. Keep in mind all of this if you run into problems.

Clang (compiler)

Alt C compiler, reportedly works fine on macOS and may used as a replacement of GCC without issues.

Should be usable on Linux and possibly Windows with CMake. For default Makefiles may need to set compiler vars appropriately (CC=clang, AR=llvm-ar and so on).

Emscripten (compiler)

C compiler that generates WebAssembly (custom Javascript), to build vgmstream's components with in-browser support.

First, follow the Emscripten installation instructions:

Though basically:

git clone https://github.com/emscripten-core/emsdk
cd emsdk
./emsdk install latest
./emsdk activate latest
source ./emsdk_env.sh

Then you should be able to build it on Linux (Windows should be possible too, but has some issues at the moment), for example with CMake:

git clone https://github.com/vgmstream/vgmstream
cd vgmstream

mkdir -p embuild
cd embuild
emcmake cmake ..
make

You can compile faster using make -j 5 instead of the last make command (replace 5 with the number of cores your CPU has plus one), but please note that, with multiple jobs, in case any issues occur the output will become useless.

The output files vgmstream-cli.wasm and vgmstream-cli.js will be located in the embuild/cli directory.

Or with the base makefiles (the output may need to be renamed to .js):

git clone https://github.com/vgmstream/vgmstream
cd vgmstream
make vgmstream-cli CC=emcc AR=emar strip=echo

Load vgmstream-cli.js in a web page, you will be able to call the callMain() function from the browser developer console. Parameters to vgmstream can be passed in an array: callMain(["-i", "input_file.pcm"]). Files can be accessed through Emscripten File System API (FS).

For a fully-featured player see:

Simple scripts (builds)

Default build scripts are included in the source that can compile vgmstream, though limited in some ways.

For MSVC: there is a default Visual Studio .sln file that should be up to date (run ./msvc-build-init.bat first, or see the foobar section to get extra dependencies manually, then open). A PowerShell script also automates compilation (on Windows 7 may need recent .NET framework and PowerShell versions), simply run ./msvc-build.bat.

First, you may need to either open the .sln and change project compiler (PlatformToolset) and SDK (WindowsTargetPlatformVersion) to your installed version, or edit msvc-build.ps1 and set the variables near CONFIG. To avoid modifying files, you can also create a file named msvc-build.config.ps1 with:

# - toolsets: "" (default), "v140" (VS 2015), "v141" (VS 2017), "v141_xp" (XP support), "v142" (VS 2019), etc
# - sdks: "" (default), "7.0" (Win7 SDK), "8.1" (Win8 SDK), "10.0" (Win10 SDK), etc
$toolset = "142"
$sdk = "10.0"

It's also possible to call MSBuild and pass those values from the CMD, see foobar section for an example.

Once finished resulting binaries are in the ./Release folder. Remember you need to copy extra .dll to run them (see USAGE.md).

For GCC/CLang: there are basic Makefiles that work like usual with make (like make vgmstream_cli EXTRA_CFLAGS="-DVGM_DEBUG_OUTPUT). Artifacts are usually in their subdir (./cli, ./winamp, etc).

On Windows this compiles with extra libs enabled by default.

On Linux there is no fancy autodetection (try CMake or autotools for that), so you need to make sure libs are in your system and pass flags to enable them manually (install/compile libs then make vgmstream_cli VGM_VORBIS=1 ...). Check or run make-build.sh for a basic example that builds CLI and vgmstream123 with most libs enabled for a Ubuntu-style distro (if you get errors on your system just tweak or comment out offending parts).

Linux example:

sudo apt-get install -y git

git clone https://github.com/vgmstream/vgmstream
cd vgmstream
# in case they weren't set
chmod +x version-get.sh version-make.sh make-build.sh

# warning: installs stuff, check all "apt install"
./make-build.sh

CMake (builds)

A tool used to generate common build files (for make, VS/MSBuild, etc), that in turn can be used to compile vgmstream's modules instead of using the existing scripts and files. Needs v3.6 or later:

On Windows you can use cmake-gui, that should be mostly self-explanatory but just in case:

  • select vgmstream's project root (vgmstream-master) in where is the source code (source dir)
  • select some path in where to build binaries (build dir), for example make a /build subdir
  • press Configure and select project "generator" type, for example Visual Studio 16 2019
    • if you get an error check you have it installed and selected the correct project version
  • should show options in red; check what you need and uncheck what you don't
  • press Generate, this creates custom project files in "build binaries" path for your tools
    • (if you are using Visual Studio there is a pre-made vgmstream_full.sln file) If you want to change options, hit Configure and Generate again. If you want to change project type, "delete cache" first then repeat steps.

On Linux, the CMake script can automatically download and build the source code for dependencies that it requires. It is also capable of creating a statically linked binary for distribution purposes. See ./make-build-cmake.sh (basically install desired deps then mkdir -p build && cd build, cmake .., make).

You can compile faster using make -j 5 instead of the last make command (replace 5 with the number of cores your CPU has plus one), but please note that, with multiple jobs, in case any issues occur the output will become useless.

The output files are build/cli/vgmstream-cli (CLI decoder), build/cli/vgmstream123 (CLI player), and build/audacious/vgmstream.so (Audacious plugin).

For more information and options see the full guide in the CMAKE.md file.

Note that doing in-source builds of CMake (cmake . in vgmstream's root dir) is not recommended, as that may clobber default build files (try cmake -S . -B build or building some ./build subfolder).

autotools (builds)

Autogenerated make scripts, used by some modules (mainly Audacious for Linux, and external libs).

For Windows you must include GCC, and Linux's sh tool in some form in PATH. Simplest would be installing MinGW-w64 for gcc.exe (and related tools), and Git for sh.exe, and making PATH point their bin dir.

  • ex. C:\mingw\i686-8.1.0-release-win32-sjlj-rt_v6-rev0\mingw32\bin and C:\Git\usr\bin
  • Both must be installed/copied in a dir without spaces (with spaces autoconf seemingly works but creates buggy files)
  • If you don't have Git, try compiled GNU tools for Windows (http://gnuwin32.sourceforge.net/packages.html)

A trick on Windows is that you can temporary alter PATH variable in .bat scripts (PATH is used to call programs in Windows without having to write full path to .exe)

set PATH=%PATH%;C:\mingw\i686-8.1.0-release-win32-sjlj-rt_v6-rev0\mingw32\bin
set PATH=%PATH%;C:\Git\usr\bin
gcc.exe (...)

For Linux, GCC/make/autotools should be included already, or install with a package manager, also depends on Make.

sudo apt-get install gcc g++ make autoconf automake libtool

Typical usage involves creating Makefiles with bootstrap and configure, make (with the correct makefile) to compile, and make install to copy results. This varies slightly depending on module/lib (explained later).

./bootstrap
./configure
make -f Makefile.autotools
sudo make -f Makefile.autotools install

External libs using autotools can be compiled on Windows too:

sh.exe ./bootstrap
sh.exe ./configure
mingw32-make.exe -f Makefile.autotools
mingw32-make.exe -f Makefile.autotools install

Also for older libs, call sh.exe ./configure with either --build=mingw32, --host=mingw32 or --target-os=mingw32 (varies) for older configure. You may also need to use this command so that .dll files are correctly generated:

mingw32-make.exe -f Makefile.autotools LDFLAGS="-no-undefined -static-libgcc" MAKE=mingw32-make.exe

Git (extras)

Code version control for development. Optional, used to auto-generate version numbers:

Remember Git can only be used if you clone the vgmstream repo (not with source downloaded in .zip).

On Windows, Git also comes with typical Linux utils (in the usr\bin dir), that can help when compiling some extra components.

Extra libs (extras)

Optional codecs. See External libraries for full info.

On Windows most libs are pre-compiled and included to simplify building (since they can be quite involved to compile).

On Linux you usually need dev packages of each (for example libao-dev for vgmstream123, libvorbis-dev for Vorbis, and so on) and they should be picked by CMake/autotool scripts.

With no extra libs (or only some) enabled vgmstream works fine, but some advanced formats/codecs won't play. See External libraries for info about those extra codecs.

Compiling modules

CLI (vgmstream-cli) / Winamp plugin (in_vgmstream) / XMPlay plugin (xmp-vgmstream)

With GCC/Clang: there are various ways to build it, each with some differences; you probably want CMake described below.

Simplest way is using the ./Makefile in the root folder, see inside for options. For compilation flags check the Makefile in each folder. You may need to manually rebuild if you change a .h file (make clean). On Windows this will build with external libs enabled, but Linux can't at the moment.

Also, on Linux you can't build in_vgmstream and xmp-vgmstream (given they are Windows DLLs...). Makefiles have been used in the past to cross-compile from Linux with MingW headers though, but can't generate native Win code at the moment (should be fixable with some effort).

Autotools should build and install it as vgmstream-cli, this is explained in detail in the Audacious section. It enables (some) extra codecs. Some Linux distributions like Arch Linux include pre-patched vgmstream with most libraries, you may want that instead (not part of this project):

If you use macOS or Linux, there is a Homebrew script that may automate the process (uses CMake, also not part of this project):

You may try CMake instead as it may be simpler and handle libs better. See the build steps in the Cmake section. Some older distros may not work though (CMake version needs to recognize FILTER command). You may also need to install resulting artifacts manually. Check the CMAKE.md doc for some extra info too.

Windows CMD .bat example (with some debugging on):

prompt $P$G$_$S

set PATH=%PATH%;C:\mingw\i686-12.2.0-release-win32-sjlj-rt_v10-rev0\mingw32\bin
set PATH=%PATH%;C:\Git\usr\bin

cd vgmstream

mingw32-make.exe vgmstream_cli -f Makefile ^
 EXTRA_CFLAGS="-DVGM_DEBUG_OUTPUT -g -Wimplicit-function-declaration" ^
 SHELL=sh.exe CC=gcc.exe AR=ar.exe STRIP=strip.exe DLLTOOL=dlltool.exe WINDRES=windres.exe ^
 STRIP=echo ^
 1> ../vgmstream-stdout.txt 2> ../vgmstream-stderr.txt

With MSVC: To build in Visual Studio, run ./msvc-build-init.bat, open vgmstream_full.sln and compile. To build from the command line, just run ./msvc-build.bat.

The build script will automatically handle obtaining dependencies and making the project changes listed in the foobar2000 section (you may need to install some PowerShell .NET packages). You could also call MSBuild directly in the command line (see the foobar2000 section for dependencies and examples).

If you get build errors, remember you need to adjust compiler/SDK in the .sln. See Simple scripts above or CMD example in the foobar section.

CMake can also be used instead to create project files (no particular benefit).

foobar2000 plugin (foo_input_vgmstream)

Requires MSVC (foobar/SDK only links to MSVC C++ DLLs). To build in Visual Studio, run ./msvc-build-init.bat, open vgmstream_full.sln and compile. To build from the command line, just run ./msvc-build.bat.

foobar has multiple dependencies. Build script downloads them automatically, but here they are:

The following project modifications are required:

  • For foobar2000_sdk_helpers and libPPUI add ../../../wtl/include to the compilers's additional includes

FDK-AAC/QAAC can be enabled adding VGM_USE_MP4V2 and VGM_USE_FDKAAC in the compiler/linker options and the project dependencies, otherwise FFmpeg is used instead to support .mp4. FDK-AAC Support is limited so FFmpeg is recommended.

You can also manually use the command line to compile with MSBuild, if you don't want to touch the .vcxproj files, register VS after trial, get PowerShell dependencies for the build script, or only have VC++/MSBuild tools.

Windows CMD example for foobar2000 (manual build):

prompt $P$G$_$S

REM MSVC ~2015
REM set PATH=%PATH%;C:\Program Files (x86)\MSBuild\14.0\Bin
REM Latest(?) MSVC (may also open "Native Tools Command Prompt for VS 20xx" in Windows' start menu)
set PATH=%PATH%;C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\MSBuild\Current\Bin

cd vgmstream

set CL=/I"C:\projects\wtl\include"
set LINK="C:\projects\foobar\foobar2000\shared\shared.lib"

msbuild fb2k/foo_input_vgmstream.vcxproj ^
 /t:Clean

REM depending on your installed Visual Studio build tools you may need to change:
REM - PlatformToolset: v140=MSVC 2015, v141=MSVC 2017, v141_xp=same with XP support, v142=MSVC 2019, etc
REM - WindowsTargetPlatformVersion: 7.0=Win7 SDK, 8.1=Win8 SDK, 10.0=Win10 SDK, etc

msbuild fb2k/foo_input_vgmstream.vcxproj ^
 /t:Build ^
 /p:Platform=Win32 ^
 /p:PlatformToolset=v142 ^
 /p:WindowsTargetPlatformVersion=10.0 ^
 /p:Configuration=Release ^
 /p:DependenciesDir=../..

Audacious plugin

Requires the dev version of Audacious (and dependencies), autotools (automake/autoconf) or CMake, and gcc/make (C++11). It must be compiled and installed into Audacious, where it should appear in the plugin list as "vgmstream".

The plugin needs Audacious 3.5 or higher. New Audacious releases can break plugin compatibility so it may not work with the latest version unless adapted first.

CMake should handle all correctly, while when using autotools, libvorbis/libmpg123/libspeex will be used if found, while FFmpeg and other external libraries aren't enabled at the moment, thus some formats won't work (build scripts need to be fixed).

Windows builds aren't supported at the moment (should be possible but there are complex dependency chains).

If you get errors during the build phase, we probably forgot some #ifdef needed for Audacious, please notify us if that happens.

Take note of other plugins stealing extensions (see USAGE.md). To change Audacious's default priority for vgmstream you can make with CFLAG AUDACIOUS_VGMSTREAM_PRIORITY n (where N is a number where 10=lowest)

You can try building with CMake. See the build steps in the Cmake section. Some older distros may not work though (CMake version needs to recognize FILTER command), and may need to install resulting artifacts manually (check ./audacious dir).

Instead of CMake you can use autotools. Terminal example, assuming a Ubuntu-based Linux distribution:

# build setup

# default requirements
sudo apt-get update
sudo apt-get install gcc g++ make git
sudo apt-get install autoconf automake libtool
# vgmstream dependencies
sudo apt-get install libmpg123-dev libvorbis-dev libspeex-dev
sudo apt-get install libavformat-dev libavcodec-dev libavutil-dev libswresample-dev
# Audacious player and dependencies
sudo apt-get install audacious
sudo apt-get install audacious-dev libglib2.0-dev libgtk2.0-dev libpango1.0-dev
# vgmstream123 dependencies (optional)
sudo apt-get install libao-dev

# check Audacious version >= 3.5
pkg-config --modversion audacious


# base vgmstream build
git clone https://github.com/vgmstream/vgmstream
cd vgmstream

# main vgmstream build (if you get errors here please report)
./bootstrap
./configure
make -f Makefile.autotools

# copy to audacious plugins (note that this will also install "libvgmstream",
# vgmstream-cli and vgmstream123, so they can be invoked from the terminal)
sudo make -f Makefile.autotools install

# update global libvgmstream.so.0 refs
sudo ldconfig

# start audacious in verbose mode to check if it was installed correctly
audacious -V

# if all goes well no "ERROR (something) referencing libvgmstream should show 
# in the terminal log, then go to menu services > plugins > input tab and check
# vgmstream is there (you can start audacious normally next time)
# uninstall if needed
sudo make -f Makefile.autotools uninstall

# optional post-cleanup
make -f Makefile.autotools clean
find . -name ".deps" -type d -exec rm -r "{}" \;
./unbootstrap
## WARNING, removes *all* untracked files not in .gitignore
git clean -fd

To update vgmstream it's probably easiest to remove the vgmstream folder and start again from base vgmstream build step, since updates often require a full rebuild anyway, or call git clean -fd or maybe git reset --hard.

vgmstream123 player

Should be buildable with Autotools/CMake by following the same steps as listen in the Audacious section (requires libao-dev).

Windows builds are possible with libao.dll and libao includes (found elsewhere) through the Makefile, but some features are disabled.

libao is licensed under the GPL v2 or later.

Shared lib

Currently there isn't an official way to make vgmstream a shared lib (.so/.dll), but it can be achieved with some effort.

For example with CMake (outputs in build/src/libvgmstream.so):

mkdir -p build
cd build
cmake ..
make libvgmstream_shared

Or with the basic makefiles:

# build all of the intermediates with relocatable code
# *note*: quick hack with performance penalty, needs better dependency rules
make vgmstream_cli EXTRA_CFLAGS=-fPIC

# build the actual shared library
make -C src libvgmstream.so

May also need to take vgmstream.h, streamfile.h and plugins.h, and trim them somewhat to use as includes for the .so.

For MSVC, you could add __declspec(dllexport) to exported functions in the "public" API of the above .h, and set <ConfigurationType>DynamicLibrary</ConfigurationType> in libvgmstream.vcxproj, plus add a <Link> under <ClCompile> to those libs (copy from vgmstream_cli.vcxproj).

For integration and "API" usage, easiest would be checking how vgmstream_cli.c works.

A cleaner API/.h and build methods is planned for the future (low priority though).

External libraries

Support for some codecs is done with external libs, instead of copying their code in vgmstream. There are various reasons for this:

  • each lib may have complex or conflicting ways to compile that aren't simple to replicate
  • their sources can be quite big and undesirable to include in full
  • libs usually only compile with either GCC or MSVC, while vgmstream supports both compilers, so linking to the generated binary (compatible) is much easier
  • not all licenses used by libs may allow to copy their code
  • simplifies maintenance and updating

They are compiled in their own sources, and the resulting binary is linked by vgmstream using a few of their symbols (see BUILD-LIB doc).

Currently vgmstream's repository contains pre-compiled external DLL libraries for Windows, while other systems link to system libraries or include static copies using CMake.

libvorbis

Adds support for Vorbis, inside Ogg as .ogg (plain or encrypted) or custom variations like .wem, .fsb, .ogl, etc.

mpg123

Adds support for MPEG (MP1/MP2/MP3), used in formats that may have custom MPEG like .ahx, .msf, .xvag, .scd, etc.

libg719_decode

Adds support for ITU-T G.719 (standardization of Polycom Siren 22), used in a few Namco .bnsf games.

  • Source: https://github.com/kode54/libg719_decode (commit da90ad8a676876c6c47889bcea6a753f9bbf7a73)
  • Official Windows binaries: none
  • Version: latest
  • DLL: libg719_decode.dll
  • lib: ---
  • unknown license (reference decoder, possibly not valid/Polycom's)

FFmpeg

Adds support for multiple codecs: ATRAC3 (.at3), ATRAC3plus (.at3), XMA1/2 (.xma), WMA v1 (.wma), WMA v2 (.wma), WMAPro (.xwma), AAC (.mp4, .aac), Bink (.bik), Smacker (.smk), AC3/SPDIF (.ac3), Opus (.opus), Musepack (.mpc), FLAC (.flac), etc. Vorbis, MPEG and PCM and a few others are also included for rare cases.

  • Source: https://git.ffmpeg.org/ffmpeg.git (tag n5.1.2)
  • Official Windows binaries: none
  • Version: n5.1.2
  • DLLs: avcodec-vgmstream-59.dll, avformat-vgmstream-59.dll, avutil-vgmstream-57.dll, swresample-vgmstream-4.dll
  • lib: -lavcodec -lavformat -lavutil -lswresample
  • primarily licensed under the LGPL v2.1 or later, with portions licensed under the GPL v2

libopus

Indirectly used by FFmpeg for improved Opus (.opus and variants) support.

LibAtrac9

Adds support for ATRAC9, used in .at9 and other formats for the PS4 and Vita.

libcelt

Adds support for FSB CELT versions 0.6.1 and 0.11.0, used in a handful of older .fsb.

libspeex

Adds support for Speex (inside custom containers), used in a few EA formats (.sns, .sps) for voices.