Difference between revisions of "OptimFROG"

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'''OptimFROG''' is a free lossless audio compress format developed by Florin Ghido.
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{{Codec Infobox
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| name                = OptimFROG
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| logo                = [[File:Frog.gif]]
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| type                = lossless
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| purpose            = "reduce at maximum the size of audio files"
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| maintainer          = Florin Ghido
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| released = OptimFROG 5.100 (2016-09-02)
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| website            = [http://losslessaudio.org/ losslessaudio.org]
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}}
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'''OptimFROG''' is a [[lossless]] audio [[codec]] with optional support for hybrid lossless/lossy encoding.  It comes with a freeware (closed-source) command-line encoder/decoder and plugins for several players and processing front-ends, and an SDK to use in other applications.  It is available for Windows, Linux, FreeBSD and MacOSX, all in both 32-bit and 64-bit versions.  Encoders for its hybrid "DualStream" format, and for floating-point audio, are included in the distributions in separate executables.
  
=== Format support ===
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OptimFROG is a codec that gives priority to compression size, sacrificing speed.  Its highest presets compress to smaller file sizes than any other codec, possibly except the (legacy/unmaintained) [[Lossless Audio|La]].  These presets are CPU intensive both for decoding and encoding, sometimes a 10x increase over the faster presets, where OptimFrog would compress about the speed of [[Monkey's Audio]] “Extra High” and achieve compression ratios like Monkey's “High”.<ref>http://audiograaf.nl/downloads.html Martijn van Beurden's lossless performance tests. Performance comparisons taken from version 4 and for CDDA audio; OptimFrog version tested 4.910b. Later versions introduced new presets, possibly altering the speed/compression trade-off.</ref>
  
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== Features ==
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For an end-user considering OptimFROG as a an audio format - likely due to its compression ratios or possibly its hybrid mode - some of the following features are quite common among lossless codecs, while some are more scarce - in particular, the end of this list. To compare OFR with other lossless codecs, see [[Lossless_comparison| HA Wiki's Lossless Codec Comparison]].
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* Streaming support
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* Seekable playback
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* Error handling. Audio checksum for integrity verification optional (use the --md5 option)
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* High-resolution audio support up to 32 bits per channel.  Like [[WavPack]] but unlike most other formats, it also supports floating-point format (through a different executable included in the distribution).  OptimFrog works with higher sampling rates, but the maximum supported sampling rate seems undocumented.
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* Piping support for encoding, and support for RAW PCM input.
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* Tagging: ID3 or APEv2 tags.
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* RIFF chunks supported for recreating also non-audio chunks of the original .wav files.
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* Can read certain malformed .wav files; in particular, some hacks employed to fit more than the 4 GB size limitation into .wav files.
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* Like WavPack, but unlike most other encoders, it can create Windows self-extracting .sfx archives. 
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* Hybrid lossy/lossless encoding supported.  Like WavPack, but unlike most (every?) other end-user codecs, OptimFROG can decode both lossy and lossless streams together, to be maintained in the same library. A separate encoder is included in the distribution.
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=== Limitations ===
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* Currently there is no hardware supporting the format and software support is limited.  The official encoder/decoder is closed-source (but a an official library can be used in third-party applications).  Also the format has no official specification.
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* Encoding and also decoding is CPU intensive, especially in the higher modes.  Given that portable low-power devices are out of consideration as they cannot play the files anyway, speed might not be that much of a limitation with the power of modern computers. Still, users who consider playing OptimFrog files from a battery-powered laptop or tablet, might want to test battery life impact, especially since it varies so much over the settings.
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* No multichannel support.
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Because OptimFrog - like MP3 - can accommodate both APE tags and ID3, tagging ambiguity could be an issue: one application might not read another's tags.  A user would likely want to stick to one tag format.  Mp3tag will by default write APE tags to .ofr files.
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===Software support===
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* [[Mp3tag]] for tagging.
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* [https://picard.musicbrainz.org/ MusicBrainz Picard] Tagger with audio identification
 
* [[foobar2000]]
 
* [[foobar2000]]
* [[XMMS]]
 
 
* [[Winamp]]
 
* [[Winamp]]
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* [[XMMS]]
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* [[XMPlay]] – plugin required (OptimFROG input plugin) and (bass library) to play 'OFR' files
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* [[dBPoweramp]] music converter
  
=== External links ===
 
 
[http://www.losslessaudiocompression.com/ Ghido's Data Compression Page]
 
  
{{stub}}
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== Links ==
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* [http://losslessaudio.org/ Official OptimFROG website]
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* [[Lossless_comparison| HA Wiki's Lossless Codec Comparison]] originally by [[User:Rjamorim|Rjamorim]]
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* [http://members.home.nl/w.speek/comparison.htm An older (2005) performance comparison of lossless audio compressors] by Speek, using OptimFrog version 4.509 {{webarchive|https://web.archive.org/web/20151027213336/http://members.home.nl/w.speek/comparison.htm|2015-10-27}}
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<references/>
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{{navbox audio codecs}}
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[[Category:Codecs]]

Revision as of 19:46, 16 January 2022

OptimFROG is a lossless audio codec with optional support for hybrid lossless/lossy encoding. It comes with a freeware (closed-source) command-line encoder/decoder and plugins for several players and processing front-ends, and an SDK to use in other applications. It is available for Windows, Linux, FreeBSD and MacOSX, all in both 32-bit and 64-bit versions. Encoders for its hybrid "DualStream" format, and for floating-point audio, are included in the distributions in separate executables.

OptimFROG is a codec that gives priority to compression size, sacrificing speed. Its highest presets compress to smaller file sizes than any other codec, possibly except the (legacy/unmaintained) La. These presets are CPU intensive both for decoding and encoding, sometimes a 10x increase over the faster presets, where OptimFrog would compress about the speed of Monkey's Audio “Extra High” and achieve compression ratios like Monkey's “High”.[1]



Features

For an end-user considering OptimFROG as a an audio format - likely due to its compression ratios or possibly its hybrid mode - some of the following features are quite common among lossless codecs, while some are more scarce - in particular, the end of this list. To compare OFR with other lossless codecs, see HA Wiki's Lossless Codec Comparison.

  • Streaming support
  • Seekable playback
  • Error handling. Audio checksum for integrity verification optional (use the --md5 option)
  • High-resolution audio support up to 32 bits per channel. Like WavPack but unlike most other formats, it also supports floating-point format (through a different executable included in the distribution). OptimFrog works with higher sampling rates, but the maximum supported sampling rate seems undocumented.
  • Piping support for encoding, and support for RAW PCM input.
  • Tagging: ID3 or APEv2 tags.
  • RIFF chunks supported for recreating also non-audio chunks of the original .wav files.
  • Can read certain malformed .wav files; in particular, some hacks employed to fit more than the 4 GB size limitation into .wav files.
  • Like WavPack, but unlike most other encoders, it can create Windows self-extracting .sfx archives.
  • Hybrid lossy/lossless encoding supported. Like WavPack, but unlike most (every?) other end-user codecs, OptimFROG can decode both lossy and lossless streams together, to be maintained in the same library. A separate encoder is included in the distribution.


Limitations

  • Currently there is no hardware supporting the format and software support is limited. The official encoder/decoder is closed-source (but a an official library can be used in third-party applications). Also the format has no official specification.
  • Encoding and also decoding is CPU intensive, especially in the higher modes. Given that portable low-power devices are out of consideration as they cannot play the files anyway, speed might not be that much of a limitation with the power of modern computers. Still, users who consider playing OptimFrog files from a battery-powered laptop or tablet, might want to test battery life impact, especially since it varies so much over the settings.
  • No multichannel support.

Because OptimFrog - like MP3 - can accommodate both APE tags and ID3, tagging ambiguity could be an issue: one application might not read another's tags. A user would likely want to stick to one tag format. Mp3tag will by default write APE tags to .ofr files.


Software support


Links

  1. http://audiograaf.nl/downloads.html Martijn van Beurden's lossless performance tests. Performance comparisons taken from version 4 and for CDDA audio; OptimFrog version tested 4.910b. Later versions introduced new presets, possibly altering the speed/compression trade-off.