We actually worked on a demo WAV compressor a while back. We are currently missing codecs to run the types of predictors that FLAC runs. We expect to add this kind of functionality in the future, in a generic way that isn't specific to audio, and can be used across a variety of domains.
But, generally we wouldn't expect to generally beat FLAC. But, be able to offer specialized compressors for many types of data that previously weren't important enough to spawn a whole field of specialized compressors, by significantly lowering the bar for entry.
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I tried compressing some CD quality PCM audio: wav=54MB, zstd=51MB, zl=42MB, flac=39MB.
So OpenZL is significantly better than zstd, but worse than flac.
Out of curiosity, what was the input file format?
We actually worked on a demo WAV compressor a while back. We are currently missing codecs to run the types of predictors that FLAC runs. We expect to add this kind of functionality in the future, in a generic way that isn't specific to audio, and can be used across a variety of domains.
But, generally we wouldn't expect to generally beat FLAC. But, be able to offer specialized compressors for many types of data that previously weren't important enough to spawn a whole field of specialized compressors, by significantly lowering the bar for entry.
The input was just CD audio, "One More Time" by Daft Punk.
test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 44100 Hz
Is that with training or without?
I think training is mandatory. These are the commands I used:
https://gist.github.com/pmarks-net/64c17aff45e7741f07eeb5dd0...