FLAC

Free Lossless Audio Codec.flacFLAC Ogg FLACuncompressed digital audio
FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation.wikipedia
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Audio coding format

audio codingaudio coding standardaudio compression format
FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation.
Examples of audio coding formats include MP3, AAC, Vorbis, FLAC, and Opus.

Digital audio

digital musicdigitalaudio
FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation.
Audio data compression techniques, such as MP3, Advanced Audio Coding, Ogg Vorbis, or FLAC, are commonly employed to reduce the file size.

Lossless compression

losslesslossless data compressioncompression
FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation.

Xiph.Org Foundation

Xiph.orgXiphXiph QuickTime Components
On 29 January 2003, the Xiph.Org Foundation and the FLAC project announced the incorporation of FLAC under the Xiph.org banner.
These include Speex, an audio codec designed for speech, and FLAC, a lossless audio codec.

Theora

Ogg Theoralibtheora.ogv
Xiph.org is behind other free compression formats such as Vorbis, Theora, Speex and Opus.
Theora video streams can be stored in any suitable container format, but they are most commonly found in the Ogg container with Vorbis or FLAC audio streams.

ReplayGain

Replay Gain
FLAC and Ogg Vorbis use the Vorbis comment fields.

Winamp

Bento BrowserDosampWinamp 5.58
Moreover, the option to write ratings to tags (for MP3, WMA/WMV, Ogg, and FLAC) was added.

Ogg

OGM.oggOgg Writ
Lossless audio compression formats include FLAC, and OggPCM.

Open format

openfreeopen file format
FLAC is an open format with royalty-free licensing and a reference implementation which is free software.

MusikCube

Plugins currently exist to provide support for many popular audio codecs, including MP3, M4A, Ogg Vorbis, and FLAC.

Vorbis comment

Vorbis commentsvorbiscomment
A Vorbis comment is a metadata container used in the Vorbis, FLAC, Theora, Speex and Opus file formats.

Foobar2000

Foobar 2000foobar2000 media playerFPL
At its core, foobar2000 natively supports a range of audio formats, including MP1, MP2, MP3, MPC, AAC, WMA, Ogg Vorbis, FLAC / Ogg FLAC, ALAC, WavPack, WAV, AIFF, AU, SND, CD, Speex, and Opus.

Ripping

DVD ripperripripped
A CUE file can optionally be created when ripping a CD.
The software then dumps them into a WAV or AIFF file, or feeds them to another codec to produce, for example, a FLAC or MP3 file.

Transcoding

transcodetranscodertranscodes
FLAC being lossless means it is highly suitable for transcoding e.g. to MP3, without the normally associated transcoding quality loss between one lossy format and another.
For users wanting to be able to re-encode audio into any format, and for digital audio editing, it is best to retain a master copy in a lossless format (such as FLAC, ALAC, TTA, WavPack, and others) that take around half the storage space needed when compared to original uncompressed PCM formats (such as WAV, and AIFF), as lossless formats usually have the added benefit of having meta data options, which are either completely missing or very limited in PCM formats.

Golomb coding

Rice codingGolomb codeGolomb Rice code
Several lossless audio codecs, such as Shorten, FLAC, Apple Lossless, and MPEG-4 ALS, use a Rice code after the linear prediction step (called "adaptive FIR filter" in Apple Lossless).

Windows 10

10Windows HelloMicrosoft Windows 10
FLAC support is included by default in Windows 10, Android, Blackberry 10 and Jolla devices.
Windows 10 adds FLAC and HEVC codecs and support for the Matroska media container, allowing these formats to be opened in Windows Media Player and other applications.

Bandcamp

Bandcamp Dailybandcamp.comBandcamp website
Bandcamp insists on a lossless format for uploading, and has FLAC as a download option.
Downloads are offered both in lossy formats as MP3 (320k or V0), AAC and Ogg Vorbis and in lossless formats as FLAC, ALAC, WAV and AIFF.

Pono (digital music service)

PonoPonoMusicPono Music
Among others the Pono music player and streaming service used the FLAC format.
using the FLAC audio file format.

MP3

.mp3MP3 downloadMP3 files
An exact restoration from a lossy copy (e.g., MP3) of the same data is impossible.
Lossless formats include FLAC (Free Lossless Audio Codec), Apple Lossless and many others.

MacOS High Sierra

macOS 10.13macOS 10.13 High Sierra10.13
macOS High Sierra and iOS 11 add native FLAC playback support.
In addition, audio codecs FLAC and Opus are also supported, but not in iTunes.

Codec

codecsdecoderdecoders
FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation.

Algorithm

algorithmsalgorithm designcomputer algorithm
Digital audio compressed by FLAC's algorithm can typically be reduced to between 50 and 70 percent of its original size and decompress to an identical copy of the original audio data.