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AMR to MKA - Online Audio Converter
Convert AMR to MKA online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert AMR to MKA
Drop AMR audio here or click to select
AMR
MKA (Matroska)
About AMR to MKA
Convert AMR to MKA. AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. MKA is the Matroska audio-only container for tracks and chapters. Only selected tracks carry over, so pick language first..
Why convert AMR to MKA?
- Flexible size with MKA lossless or lossy compression - lossy for smaller files, lossless for exact quality.
- Keep quality where supported.
- Private, no upload - runs in your browser.
AMR vs MKA
| Codec | AMR-NB | Matroska |
|---|---|---|
| Compression | lossy | lossless or lossy |
| Sample behavior | Quality set by bitrate | Depends on the track inside |
| Typical use | AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. | MKA is the Matroska audio-only container for tracks and chapters. |
When not to convert AMR to MKA
- Skip MKA for archival masters: lossy compression discards detail, so keep the AMR original.
- Keep a master copy: repeated exports stack small losses, so archive AMR before batch MKA shares.
Limits
Starting point: AMR - AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. Tuned for voice calls, so music loses detail by design. Only selected tracks carry over, so pick language first. Encode MKA (Matroska) from AMR 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 AMR to MKA?
Drop your AMR file onto this page, choose quality and codec settings, then click Convert. The result downloads as MKA instantly. All processing runs in your browser.
What codec is used for MKA?
The default codec for MKA is Matroska. 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.