AU to G.729 - Online Audio Converter

Convert AU to G.729 online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert AU to G.729

[+] Drop AU audio here or click to select AU

Output format

G.729 (G.729)

Mode[i]

Simple Advanced

Quality[i]

Sample Rate[i]

Channels[i]

About AU to G.729

Convert AU to G.729. AU is Sun's simple container, usually holding 8 kHz telephony audio. G.729 fits calls into 8 kbps with algebraic prediction. Tooling reflects its licensed history; prefer Opus for new recordings..

Why convert AU to G.729?

Smaller files with G.729 lossy compression.
Keep quality where supported.
Private, no upload - runs in your browser.

AU vs G.729

Codec	PCM 16-bit	G.729
Compression	uncompressed	lossy
Sample behavior	Full quality kept	Quality set by bitrate
Typical use	AU is Sun's simple container, usually holding 8 kHz telephony audio.	G.729 fits calls into 8 kbps with algebraic prediction.

When not to convert AU to G.729

Skip G.729 for archival masters: lossy compression discards detail, so keep the AU original.
Keep a master copy: repeated exports stack small losses, so archive AU before batch G.729 shares.

Limits

Starting point: AU - AU is Sun's simple container, usually holding 8 kHz telephony audio. Headers are minimal; verify sample rate after conversion. Tooling reflects its licensed history; prefer Opus for new recordings. Encode G.729 (G.729) from AU 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 AU to G.729?

Drop your AU file onto this page, choose quality and codec settings, then click Convert. The result downloads as G.729 instantly. All processing runs in your browser.

What codec is used for G.729?

The default codec for G.729 is G.729. 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.