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