Archives
Arcsoft Mobile Media Codecs
Arcsoft has a line of mobile media codecs that includes support for MIDI, JPEG, PNG, GIF, and speech.
http://www.arcsoft.com/en/wireless/corelibraries.aspMplayer OS X
A port of the ever popular Mplayer media player to Apple’s O/S.
http://mplayerosx.sourceforge.net/MG4J: Managing Gigabytes for Java™
A Java implementation of the inverted-index compression systems described in the book Managing Gigaybtes. This GPLed effort doesn’t appear to have any connection with Witten, Moffat, or Bell.
Version 0.8.2 is shipping in October, 2003.
PDFCompress
A Mac OS X utility to shrink the huge PDF files created by the Mac Quartz rendering engine.
http://www.metaobject.com/Products.html#PdfCompressHTML-Optimizer
This program is designed to optimize your HTML source files by removing unnecessary characters, duplicated tags, and so on. Yes, this counts as Data Compression! Note that this link points to the Windows version of the program, but there are also two different Mac versions which you can easily find.
Version 7.82 was shipping in october […]
http://www.tonbrand.nl/optimizer_win.htmlibhuffman - Huffman encoder/decoder library
libhuffman is a Huffman encoder/decoder library and a command line interface to the library. The encoder is a 2 pass encoder. The first pass generates a huffman tree and the second pass encodes the file. The decoder is one pass and uses a huffman code table at the beginning of the compressed file to decode […]
http://huffman.sourceforge.net/read more from " libhuffman - Huffman encoder/decoder library "
MP3 File Structure
This reference page breaks down the structure of an MP3 file quite nicely. Covers all the stuff you’ve wanted to know in detail.
http://www.multiweb.cz/twoinches/MP3inside.htmLightNZip
LightNzip is a PalmOS system compression and decompression utility.
http://www.toysoft.ca/lightnzip.htmlNSF I/U Center for Next Generation Video
The Center for Next Generation Video is working on a number of research projects dealing with advanced video coding.
http://www.ecse.rpi.edu/CNGV/PAQ4 Archiver
The latest in the series of multi-model compressors from Matt Mahoney. This improves on PAQ3n’s remarkable Calgary corpus performance by an additional 12K, at some expense in speed. Takes a whopping 84MB at runtime!
http://cs.fit.edu/~mmahoney/compression/paq4.cpp4Zip Zip Manager
This Zip file manager seems to be making its claim to commercial success on two factors. First, it’s 10 bucks cheaper than the big two, PKZip and WinZip. Second, it automatically fixes corrupt archives. (Although I’d love to see a discussion of just how well it does this.)
http://www.4zip.com/winzip.htmPAQ3N
Matt Mahoney says that with recent improvements by Serge Osnach, PAQ3N does better on the Calgary Corpus than any other open source compressor.
http://cs.fit.edu/~mmahoney/compression/paq3n.cppMichael Dipperstein’s Huffman Code Page
Michael Dipperstein describes his personal quest for understanding an implementation of Huffman coding. Full source included.
The page was updated with new source December, 2002.
http://michael.dipperstein.com/huffman/index.htmlStubbieMan
A free SFX Maker with some nice features.
http://www.powerprogrammer.co.uk/stubbie.htmNX Developers
This site appears to the home page for a project dedicated to developing an Open Source X Windows compression library.
http://www.nomachine.com/developers.phpAdam Clark Finds a Buyer
It appears that the technology promised by Adam Clark has found a buyer. MWC is paying $11 million for the IP that is reputed to be able to create a full-screen video experience over normal voice lines.
http://www.asx.com.au/asxpdf/20031001/pdf/3j7tqwvlr3y77.pdfDualStream - Near Lossless Audio Compression
DualStream is aimed at filling the big gap between perceptual coding and lossless coding. The goal is to offer real transparent audio coding (not only perceptually transparent) at half or less the bitrate generally used by lossless coding, and also to permit progressive consistent increase of the quality level, until lossless coding is reached. To […]
http://losslessaudiocompression.com/DualStream.phpread more from " DualStream - Near Lossless Audio Compression "
OptimFROG - IEEE Float
A lossless compressor for audio data stored as IEEE floating point data.
http://losslessaudiocompression.com/IEEE_Float.phpOptimFROG - squeezing the bits out of audio
OptimFROG is a lossless audio compressor. Lots of claims for great performance!
OptimFROG 4.507 is shipping as of October, 2003. Features added since my last report include numerous bug fixes and performance tweaks. The author claims to have superior lossless compression ratios, includes numerous player plugins, and is free for non-commercial use.
Version 4.507 is shipping […]
http://ghido.shelter.ro/read more from " OptimFROG - squeezing the bits out of audio "
ImageGear
ImageGear from Accusoft is a super-capable imaging library, available in four different varieties. It supports the normal roster of file types, but also includes some more advanced image and file formats, such as PDF and JPEG-2000.
Version 13 is shipping as of October, 2003.
http://accusoft.com/imaging/imagegear/ig_about.aspStar
Star is a free tar program, and boasts that it is the first free tar program to support POSIX.1-2001 extended tar headers.
http://www.fokus.gmd.de/research/cc/glone/employees/joerg.schilling/private/star.htmlAlgorithms for Triangulated Terrains
by Marc van Kreveld. This paper looks at a method for compressing geographical elevation data.
http://archive.cs.uu.nl/pub/RUU/CS/techreps/CS-1997/1997-32.pdfMultithreaded Zip Search
A CodeProject article describing a way to search through multiple Zip archives.
http://www.codeproject.com/useritems/ZipSearch.aspBack2zip
A shareware backup program that saves your stuff to the Zip format. We like that.
http://avatarsoft.com/free/simpleserver.exe?product&s=23371&pg=Back2zip_About&avSID=h23403279605320&avSID=h23403279605320RF Coding
A paper by Eduardo Enrique González Rodriguez that describes a proposed new method of entropy encoding. Eduardo overcomes some of the problems faced by Huffman coding in certain circumstances, such as a very small alphabet.
http://datacompression.info/Miscellaneous/rfdoc.rtfRF Coder Source Code
The source code to accompany Eduardo Enrique Gonzalez Rodriguez’s artice on RF coding, his proposed new entropy encoder. (Note that this archive contains his paper as well, so you don’t need to download both.)
http://datacompression.info/Miscellaneous/rf-coder.tgzAMC-JPEG2000
This product converts your photos to JPEG-2000 format to speed up the process of sending them by mail. And how do your friends view these photos when they get them? Well, it appears that AMC will be happy to give them a free JPEG 2000 viewer.
http://www.amux.com/eZip Wizard
This Win32 archiver is free if all you ever do is unzip files. Creating Zip files is going to require registration and you coughing up a few bucks.
http://www.edisys.com/Products/eZip_Wizard__32_bit_/ezip_wizard__32_bit_.aspBinary Encoding
A survey paper that covers the current roster of popular encoding algorithms, such as Base64, Base32, Hex, etc.
http://www.imagingstuff.com/binaryencoding.pdf