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MTM to AC3 - Online Audio Converter
Convert MTM to AC3 online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert MTM to AC3
Drop MTM audio here or click to select
MTM
AC3 (AC-3)
About MTM to AC3
Convert MTM to AC3. MTM (MultiTracker) sequences 32-channel DOS-era compositions. AC3 (Dolby Digital) carries 5.1 surround on DVDs and broadcasts. Downmix choices change loudness; check levels after conversion..
Why convert MTM to AC3?
- Smaller files with AC3 lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
MTM vs AC3
| Codec | MTM | AC-3 |
|---|---|---|
| Compression | sequence | lossy |
| Sample behavior | Note events - no audio samples | Quality set by bitrate |
| Typical use | MTM (MultiTracker) sequences 32-channel DOS-era compositions. | AC3 (Dolby Digital) carries 5.1 surround on DVDs and broadcasts. |
When not to convert MTM to AC3
- Skip AC3 for archival masters: lossy compression discards detail, so keep the MTM original.
- Keep a master copy: repeated exports stack small losses, so archive MTM before batch AC3 shares.
Limits
Starting point: MTM - MTM (MultiTracker) sequences 32-channel DOS-era compositions. Old 32-channel layouts may fold down; check the mix. Downmix choices change loudness; check levels after conversion. Encode AC3 (AC-3) from MTM 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 MTM to AC3?
Drop your MTM file onto this page, choose quality and codec settings, then click Convert. The result downloads as AC3 instantly. All processing runs in your browser.
What codec is used for AC3?
The default codec for AC3 is AC-3. 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.