codec2 ☆

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Description:
Open source speech codec

Type: Formula | Latest Version: 1.2.0@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Multimedia

Tags: codec audio voice telecommunications amateur-radio

Install: brew install codec2

About:
Codec2 is a low-bitrate speech audio codec designed for high quality voice communication even at very low bandwidths. It operates at bitrates as low as 700 bit/s while maintaining intelligibility, making it ideal for constrained environments. The library provides encoding and decoding functionality for robust voice transmission.

Key Features:

Ultra-low bitrate speech codec (down to 700 bit/s)
High speech quality and intelligibility at low rates
Open source implementation with a permissive license
Used in amateur radio and satellite communications

Use Cases:

Amateur radio digital voice communication
Satellite and HF radio voice transmission
Low-bandwidth voice chat applications
Emergency and disaster response communications

Alternatives:

Opus – Opus offers higher quality at higher bitrates (6-512 kbit/s) but is not optimized for extremely low bandwidth scenarios like Codec2
AMBE – AMBE is a proprietary alternative often used in commercial radios, while Codec2 is fully open source

License: LGPL-2.1-only

Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, arm64_big_sur, sonoma, ventura, monterey, big_sur, arm64_linux, x86_64_linux

Version History

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