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Developer(s) Florin Ghido
Stable release
5.003 / November 6, 2015; 11 months ago (2015-11-06)
Preview release
4.910b *only Windows* / February 12, 2011; 5 years ago (2011-02-12)
Operating system Linux, Darwin, Microsoft Windows
Type Audio compression Encoder
Website www.losslessaudio.org

OptimFROG is a proprietary lossless audio data compression codec developed by Florin Ghido. OptimFROG is optimized for very high compression ratios at the expense of encoding and decoding speed.

OptimFROG DualStream[edit]

OptimFROG DualStream is a lossy codec, aimed to fill the gap between perceptual coding and lossless coding as OptimFROG DualStream has an option to produce a correction file. This file can be used, in combination with the main lossy-encoded file, for lossless decoding, but not, unlike Wavpack hybrid for instance, for playback.[1]

This correction feature is also offered by MPEG-4 SLS and DTS-HD Master Audio.

Technical details[edit]


Both OptimFROG file formats use APEv2 tags to store the metadata.


  1. ^ "How to use OptimFROG DualStream Correction files? - Hydrogenaudio Forums". www.hydrogenaud.io. Retrieved 2015-07-13. 

External links[edit]