Foobar2000 ~ Official Free Encoder Pack


This pack includes every natively supported free encoder binary for use with the Converter foobar2000 component. The binaries are conveniently installed into a subfolder of the foobar2000 installation folder.

Current versions of foobar2000 will automatically recognize these encoders and no longer ask you for encoder binary location.

Included encoders:

  • FLAC
  • Ogg Vorbis
  • Opus
  • Musepack
  • WavPack
  • AAC + Apple Lossless (qaac) – requires iTunes to be installed (read more…)
  • AAC (fhgaacenc) – requires Winamp to be installed (read more…)
  • Apple Lossless (refalac)
  • MP3 (LAME)

Website

LameXP ~ Multi-Format Audio Encoder Front-end


LameXP is a free multi-format audio file converter that supports a variety of output formats, including MP3, AAC/MP4, Ogg Vorbis, Opus, as well as FLAC, and an even higher number of input formats. It also supports batch processing and can utilize multiple processor cores.

lamexp

http://lamexp.sourceforge.net

winLAME ~ Windows Audio Encoder


winLAME is an easy to use encoder for many audio formats, including MP3, Opus, Ogg Vorbis and more. winLAME uses the LAME mp3 encoder.

winLAME lets you read in audio tracks from CDs or encode audio files from your hard drive. The intuitive wizard-style user interface makes it easy to set up encoding settings. Multicore CPUs are used to parallelize encoding tasks.

winlame

https://winlame.sourceforge.io

Opus ~ Interactive Audio Codec


Opus is a lossy audio coding format developed by the Xiph.Org Foundation and standardized by the Internet Engineering Task Force, designed to efficiently code speech and general audio in a single format, while remaining low-latency enough for real-time interactive communication and low-complexity enough for low-end embedded processors. Opus replaces both Vorbis and Speex for new applications, and several blind listening tests have ranked it higher-quality than any other standard audio format at any given bitrate until transparency is reached, including MP3, AAC and HE-AAC. ~ Wikipedia

http://opus-codec.org
http://opus-codec.org/downloads/
Wikipedia

BatchEncoder ~ An Audio Conversion Frontend


BatchEncoder

BatchEncoder is an audio files conversion software. It supports most of popular audio file formats including lossy and lossless compression. The program is very simple to use. BatchEncoder is basically GUI front-end for command-line tools. All it does is create background processes and pass arguments to it with options set in presets/format menu and additionally adds input and output file paths.

Website
Discussion ~ Hydrogen Audio
GitHub file repository

LAME ~ Cross-platform, Free, Open MP3 Encoder


WikiLAME is used to encode / compress audio into the lossy MP3 file format. It’s a high quality MPEG Audio Layer III (MP3) encoder, licensed under the LGPL.

Website
Downloads
LAME Recommended Settings – HA Wiki
Libraries – RareWares
Wikipedia

FLAC ~ Free Lossless Audio CODEC


FLAC stands for Free Lossless Audio Codec, an audio format similar to MP3, but lossless, meaning that audio is compressed in FLAC without any loss in quality. This is similar to how Zip works, except with FLAC you will get much better compression because it is designed specifically for audio, and you can play back compressed FLAC files in your favorite player (or your car or home stereo) just like you would a MP3 file.

FLAC stands out as the fastest and most widely supported lossless audio codec, and the only one that at once is non-proprietary, is unencumbered by patents, has an open-source reference implementation, has a well documented format and API and has several other independent implementations.

xiph.org/flac
xiph.org/flac/comparison
xiph.org/flac/documentation
xiph.org/flac/download
xiph.org/flac/faq
sourceforge.net/projects/flac
en.wikipedia.org/wiki/FLAC

Additional resources:

sourceforge.net/projects/flacfrontend