- Format: 0xF1AC
- Company: Xiph
- Website: http://flac.sourceforge.net/
- Samples: http://samples.mplayerhq.hu/A-codecs/lossless/ (luckynight.flac)
FLAC stands for Free Lossless Audio Codec. Sometimes it also serves as its own container format and sometimes it is encapsulated in Ogg files. It has a prediction model that is very similar to the one used by Shorten.