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AAC to UMX - Online Audio Converter
Convert AAC to UMX online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AAC to UMX
Drop AAC audio here or click to select
AAC
UMX (UMX)
About AAC to UMX
Convert AAC to UMX. AAC is the MPEG-4 successor to MP3 used by YouTube and Apple Music. UMX wraps tracker music for Unreal-engine game levels. Game containers may bundle several songs; convert each separately..
Why convert AAC to UMX?
- Tiny files with UMX note events (no audio samples).
- Keep quality where supported.
- Private, no upload - runs in your browser.
AAC vs UMX
| Codec | AAC | UMX |
|---|---|---|
| Compression | lossy | sequence |
| Sample behavior | Quality set by bitrate | Note events - no audio samples |
| Typical use | AAC is the MPEG-4 successor to MP3 used by YouTube and Apple Music. | UMX wraps tracker music for Unreal-engine game levels. |
When not to convert AAC to UMX
- Skip UMX for recorded sound: it stores note events, not audio, so keep the AAC recording.
- Keep a master copy: repeated exports stack small losses, so archive AAC before batch UMX shares.
Limits
Starting point: AAC - Efficient lossy audio for streaming services. Container variants (ADTS, MP4) need matching extensions on export. Game containers may bundle several songs; convert each separately. Encode UMX (UMX) from AAC at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert AAC to UMX?
Drop your AAC file onto this page, choose quality and codec settings, then click Convert. The result downloads as UMX instantly. All processing runs in your browser.
What codec is used for UMX?
The default codec for UMX is UMX. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.