Audiompeg

Audiompeg is an open-source software library and command-line utility designed to handle MPEG audio streams. It provides encoding, decoding, transcoding, and metadata handling with a modular, cross-platform architecture.

The project focuses on MPEG audio formats such as MP3 and related variants. It offers a C API and optional bindings for higher-level languages. Core functionality includes decoding MP3 frames, encoding PCM data into MP3, and streaming support.

Audiompeg uses a modular pipeline with decoders, encoders, and muxers that can be combined in flexible workflows. It emphasizes portability and performance, with a cross-platform build system and optional SIMD optimizations. Metadata handling includes ID3 tags and Xing headers.

Development began in 2012 as an academic project and evolved into a community-driven project. It is released under a BSD-like license and accepts external contributions through a public repository. Documentation and example code accompany the project to facilitate integration.

Audiompeg is used by indie audio tools, archival projects, and research experiments where a lightweight, transparent MP3 processing component is preferred. While not as widely adopted as FFmpeg for general multimedia tasks, it is maintained by a small, active community.