FLAC is rubbish. Unmaintained for years, weak and slow, except for decompression.
It gained some popularity because of missteps of competition, but I can't understand why is it growing.
Non-lossy OSS? Compress once, use forever...
Just like WavPack, ALAC, TTA, Shorten, ALS, SLS and arguably MAC.
- Portable to many systems
- Source open and freely licenced
- Hardware support (PhatBox, Kenwood MusicKeg, Rio Karma, etc. See below)
- Streaming support
- Extremely fast decoding
- Supports multichannel and high resolution streams
- Supports ReplayGain
- Supports cue-sheet (with some limitations)
- Gaining wide use as successor to Shorten
- Compresses less efficiently than other popular modern compressors (Monkey's Audio, OptimFROG)
- Higher compression modes slow, for little gain over the default setting.
WavPack beats it in all regards except for power usage and hardware support in portable use. Which neither is good for anyway.
And unlike FLAC its developer supports it, so when something breaks (I've had data loss caused by a bug in FLAC, mangled order of channels), you have a chance to get it back.