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Speex to G.729 - Online Audio Converter

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

[+] Drop Speex audio here or click to select Speex, OGG
G.729 (G.729)

About Speex to G.729

Convert Speex to G.729. Speex compresses speech at telecom bitrates for voice apps. G.729 fits calls into 8 kbps with algebraic prediction. Tooling reflects its licensed history; prefer Opus for new recordings..

Why convert Speex to G.729?

Speex vs G.729

CodecSpeexG.729
Compressionlossylossy
Sample behaviorQuality set by bitrateQuality set by bitrate
Typical useSpeex compresses speech at telecom bitrates for voice apps.G.729 fits calls into 8 kbps with algebraic prediction.

When not to convert Speex to G.729

Limits

Starting point: Speex - Speex compresses speech at telecom bitrates for voice apps. Wideband modes confuse old tools; verify rate after conversion. Tooling reflects its licensed history; prefer Opus for new recordings. Encode G.729 (G.729) from Speex 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.

Related conversions

How do I convert Speex to G.729?
Drop your Speex 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.