FNV BSA Decompressor

newvegas — Mods & Enhancements

FNV BSA Decompressor is a utility that decompresses Fallout New Vegas BSAs and repacks them without zlib compression, transcodes .ogg sound effects to .wav, and extracts mp3 files to loose files. With 14,800 endorsements and 1.0M downloads, it's a widely used tool for modders and players seeking better compatibility.

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Downloads, ratings, compatibility info, installation guides, and user reviews.

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Syntax

Utilities

Example

Downloads: 1,002,459

💡 Notes

By zilav

🎯 Tips & Tricks

Run the tool on a backup of your BSA files to avoid corrupti

Run the tool on a backup of your BSA files to avoid corrupting your game data.

After decompressing, check if any mods require the original

After decompressing, check if any mods require the original compression—some might break.

If you're modding, use a mod manager like FOMM to handle the

If you're modding, use a mod manager like FOMM to handle the repacked BSAs.

🔧 Troubleshooting

Mod conflicts

Check load order. Disable conflicting mods one by one.

⚠️ Common Mistakes

Installing without checking requirements

👍 Pros

Massive community trust: 14,800 endorsements and 1.0M downloads show this is a go-to tool.
Solves real audio issues by converting .ogg to .wav and extracting mp3s, making sounds actually play.
Active maintenance: last updated July 2024, so it's current with the game's ecosystem.

👎 Cons

It's a niche utility—if you don't mod FNV or mess with BSAs, you won't need it.
No detailed instructions in the description, so you'll need to figure out the exact usage steps yourself.
Repacking BSAs might break other mods that expect the original compression, so test carefully.

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