Audio format
.flac
Free Lossless Audio Codec
FLAC is the leading open-source lossless audio format. It compresses audio files to about 50-60% of their original size without any quality loss — perfect for audiophiles and music archival.
MIME type
audio/flac
Developer
Xiph.Org Foundation
Introduced
2001
Advantages
- Lossless — identical to original audio
- 50-60% smaller than WAV
- Open source and royalty-free
- Excellent metadata and tagging support
Limitations
- Larger than lossy formats like MP3
- Not supported by all portable devices
- Slower to encode than lossy formats
- iTunes/Apple Music prefer ALAC
When to use FLAC
Hi-fi music collections
Audio archival and preservation
CD ripping at full quality
Audiophile music streaming
Technical details
FLAC uses linear prediction and entropy coding for lossless compression. It supports up to 32 bits per sample, 655,350 Hz sample rate, and up to 8 channels. Average compression is 50-70% of PCM.
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7 formats can be converted to FLAC
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