The Eternity Audio Tool is a popular utility in the video game modding community used to manipulate and replace audio files within a game's data. It is specifically designed to handle CRIWARE (.acb and .awb) files, which are common in many Japanese-developed titles and games built on engines like Unreal Engine 4.
The "story" behind this tool is one of community-driven development to enable players to customize their gaming experiences by swapping background music (BGM) and voice clips. How it Works
The tool functions as a bridge between standard audio formats and complex game archives:
Audio Extraction: It allows users to rip audio tracks (often in .hca format) directly from game archives like .acb files.
Format Conversion: It can convert standard .wav files into the specific formats required by the game engine, automatically handling aspects like volume balancing and loop points. eternity audio tool
Real-time Preview: It features a built-in player that lets modders listen to tracks before extracting or replacing them. Major Games and Use Cases
While it started as a niche tool, it gained significant traction for several high-profile titles:
Fighting Games: It became a staple for modding Street Fighter V and Marvel vs. Capcom: Infinite, where players often wanted to bring back classic character themes.
Sonic the Hedgehog: It is frequently used for modding modern Sonic games like Sonic Frontiers to replace boss music or stage themes. The Eternity Audio Tool is a popular utility
Strategy and RPGs: It has been used for games like Super Robot Wars and Bloodstained: Ritual of the Night to implement custom soundtracks or voice files. Key Features for Modders
Loop Points: One of its most valued features is the ability to set and preserve loop points, ensuring that custom music transitions seamlessly during gameplay rather than just stopping.
Accessibility: Unlike earlier methods that required complex hex editing or reverse engineering, the Eternity Audio Tool provided a GUI that simplified the process for everyday users.
Compatibility: It supports various container formats including independent .acb files, mixed-mode archives, and those stored within Unreal Engine .uasset files. Capture: Start a session from the web or
For a step-by-step demonstration of how modders use this tool to replace game audio: PES 2017 NEW CALL NAMES INDONESIA BRI LIGA 1 2023 WINTECH id YouTube• Feb 16, 2023
Why would anyone need such a tool?
The true eternity audio tool will likely arrive with continuous generative AI models. Instead of stretching existing audio, a local LLM-like audio model would generate the next 10 seconds of sound based on the previous 10 seconds, but with a "temperature" setting high enough to ensure constant novelty. You would press "Play" and the tool would compose its own infinite symphony, in real-time, until the heat death of the hardware.