Convert UAX to AVR

Understanding the uax and avr file formats

UAX files are Unreal Audio Package files used primarily by Unreal Engine games to store collections of sound effects, music, and other audio assets. These files are proprietary and are not standard audio formats, but rather containers for multiple audio clips, often in compressed or raw formats.

AVR files are Audio Visual Research format files, commonly used on older Macintosh systems and some audio hardware. AVR is a simple, uncompressed audio format that stores raw PCM data along with a small header describing the audio properties.

Why convert uax to avr?

Converting UAX to AVR may be necessary if you want to use Unreal Engine audio assets on legacy audio hardware or software that only supports the AVR format. This process involves extracting the audio from the UAX package and then converting it to the AVR format.

How to convert uax to avr

Since UAX is a proprietary container, the conversion is a two-step process:

1. Extract audio files from the UAX package using a tool like Unreal Package Extractor or umodel (UE Viewer). These tools allow you to browse and export individual audio files (usually in WAV or OGG format) from the UAX file.
2. Convert the extracted audio files to AVR format using an audio converter such as Audacity or SoX. Both support exporting to AVR after importing the extracted audio.

Recommended software for uax to avr conversion

• Umodel (UE Viewer): Free tool for extracting audio from UAX files. Download from gildor.org.
• Audacity: Free, cross-platform audio editor. After importing the extracted audio, use File → Export → Export Audio and select AVR as the format.
• SoX (Sound eXchange): Command-line audio converter. Use the command sox input.wav output.avr to convert files.

Step-by-step conversion process

1. Open your UAX file in Umodel and extract the desired audio files (usually as WAV or OGG).
2. Open the extracted audio file in Audacity.
3. Go to File → Export → Export Audio.
4. In the export dialog, choose AVR (Audio Visual Research) as the format.
5. Click Save to complete the conversion.

Tips and considerations

• Not all UAX files contain standard audio formats; some may require additional decoding.
• AVR is an old format and may not support modern audio features like metadata or high sample rates.
• Always check the extracted audio for quality before converting to AVR.