FModBankParser

C# library for parsing and extracting FMOD Studio sound banks, with a primary focus on Unreal Engine projects.

FModBankParser allows you to analyze, extract, and inspect FMOD .bank files of any kind, including those used in commercial games and standalone FMOD projects. It supports a wide range of FMOD versions.

This library was originally developed for the FModel project, if you are only interested in exploring or extracting FMOD audio from UE games you should check it out first.

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Disclaimer

This project was reverse-engineered by studying publicly available SDKs, documentation, and game binaries, and is not affiliated with or endorsed by Firelight Technologies in any way. All work was independently performed to better understand FMOD soundbank formats within Unreal Engine projects.

No proprietary, confidential, or internal source code from Firelight Technologies was used in the development of this library.

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Features

This library is intended only for parsing, reading, and extracting FMOD .bank, .assets.bank, .streams.bank, and .strings.bank files.
It is not designed and will never be used to rebuild or modify soundbanks.

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Installation

From NuGet

The easiest way to use FModBankParser is via NuGet:

dotnet add package FModBankParser

From local project

If you have a local copy of the project:

git clone https://github.com/Masusder/FModBankParser.git

You can include it directly in your .NET project:

dotnet add reference ../FModBankParser/FModBankParser.csproj

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Demo CLI Usage

Project comes with an example FModBankParser.Demo that you can use.

Compile the project or download the demo executable from the Releases tab, then run it from a terminal:

FModBankParser.Demo <file_or_folder> [--key <encryptionKey>] [--export-audio] [--output <outputFolder>]

Options

Option	Description
path	Path to a FMOD .bank file or folder containing soundbanks (required)
--key -k	Optional encryption key string for encrypted soundbanks
--export-audio -e	Flag if you want to export audio from the soundbanks
--output -o	Optional output folder for exported audio (default: ExportedAudio)
--help -h	Print help options

API Usage Examples

Load a Single FMOD Bank

using FModBankParser;

var reader = FModBankParser.LoadSoundBank("Master.bank");

Console.WriteLine($"Soundbank: {reader.BankName} (GUID: {reader.GetBankGuid()})");
Console.WriteLine($"FMOD Version: {reader.BankInfo.FileVersion}");
Console.WriteLine($"Event count: {reader.EventNodes.Count}");

Load All Banks in a Directory

using FModBankParser;

var readers = FModBankParser.LoadSoundBanks("C:\\Games\\MyProject\\Content\\FMOD");

foreach (var reader in readers)
    Console.WriteLine($"Loaded bank: {reader.BankName}");

Audio Export

Important

FSB5 audio extraction is handled via Fmod5Sharp library, make sure to check it out.

using FModBankParser;

// Load a sound bank
var reader = FModBankParser.LoadSoundBank("Master.bank")
var outDir = new DirectoryInfo("ExportedAudio")

// Export all embedded audio
var exportedAudio = FModBankParser.ExportAudio(reader, outDir);

if (exportedAudio.Success)
{
    Console.WriteLine($"Exported {exportedAudio.FilesExported} audio files to: {outDir.FullName}");
}
else
{
    Console.WriteLine($"No audio files were exported for {file.Name}.");
}

Tested FMOD Versions

FMOD Version	Game(s)
0x33	All is Dust
0x3E	Interloper
0x40	Ancestory
0x44	Quanero VR
0x4A	Quanero VR
0x87	Train Life – A Railway Simulator (UE 4.27)
0x8E	Dispatch Demo, Militsioner, The Day Before, Ghostrunner 2, Epic Mickey Rebrushed, Daimon Blades, etc.
0x92	Dead as Disco Demo, Rage Quit, Spongebob: Titans of the Tide, Groovity, Dreadbone, Lilith, etc.

Note

For a full list of tested versions check this summary.

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Acknowledgements

• Special thanks to LongerWarrior for the help.

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License

FModBankParser is licensed under Apache License 2.0, licenses of third-party libraries used are listed here.