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WebM to MTM - Online Audio Converter
Convert WebM to MTM online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert WebM to MTM
Drop WebM audio here or click to select
WebM
MTM (MTM)
About WebM to MTM
Convert WebM to MTM. WebM pairs VP9 video with Opus audio and supports an alpha channel. MTM (MultiTracker) sequences 32-channel DOS-era compositions. Old 32-channel layouts may fold down; check the mix..
Why convert WebM to MTM?
- Tiny files with MTM note events (no audio samples).
- Keep quality where supported.
- Private, no upload - runs in your browser.
WebM vs MTM
| Animation | Yes | No |
|---|---|---|
| Transparency | Yes | No |
| Compression | lossy | sequence |
| Typical use | WebM pairs VP9 video with Opus audio and supports an alpha channel. | MTM (MultiTracker) sequences 32-channel DOS-era compositions. |
When not to convert WebM to MTM
- Skip MTM for recorded sound: it stores note events, not audio, so keep the WebM recording.
- Flatten transparency first: MTM has no alpha channel, so composite WebM over a background color.
Limits
Starting point: WebM - VP9 video with Opus audio and alpha support. Apple editors accept it unevenly; keep MP4 for editing round-trips. Old 32-channel layouts may fold down; check the mix. Encode MTM (MTM) from WebM at a bitrate near the source, and confirm the audio track before converting.
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 WebM to MTM?
Drop your WebM 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.