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 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.
This correction feature is also offered by MPEG-4 SLS and DTS-HD Master Audio.
Both OptimFROG file formats use APEv2 tags to store the metadata.
- ↑ "How to use OptimFROG DualStream Correction files? - Hydrogenaudio Forums". www.hydrogenaud.io. Retrieved 2015-07-13.
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- OptimFROG at Hydrogenaudio Wiki.