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
Detected Version Rev Change Commit
Sep 11, 2024 1:53pm 0 VERSION_BUMP e67b66a6
Sep 30, 2023 5:07pm 0 VERSION_BUMP 6155560a
Nov 25, 2022 12:55am 0 VERSION_BUMP 9d278bc6
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