Author Page
libbzip2 for WinCE
A version of libzip2 in source format for WinCE, along with demo code and project files. Ciprian Miclaus created this port along with one of zlib, and has made them available for all manking. Thanks Ciprian!
http://www.ciprian-miclaus.com/sources/libbzip2.asp?id=6&tip=c
PICVideo Codec from Pegasus Imaging
This software codec produces video in three different formats: Motion JPEG, Wavelet 2000, and Lossless JPEG.
MPEG Audio Programmer’s corner
MP3′ Tech calls this “the biggest MPEG audio source codes area avaible on the Internet.” Find source for MPEG-1/2/2.5 Layer 1/2/3, MPEG-2 AAC and MPEG-4, as well as UI code.
Reader Robert S. said It seems very hard to find a description of the Layer 3 bitstream format. Fimally found it here.
Publications of Wojciech Szpankowski
A good selection of papers online relating to pattern matching and compression.
Xdelta
Xdelta is a complete system for managing delta-compressed storage and network transport. Using the Xdelta system, you can easily incorporate this functionality into your application.
Patent-Clear and Headache-Free Sound Format
Charlie Cho reviews Ogg Vorbis for Web Techniques Magazine, February of 2002.
Slashdot Discusses Zeosync
The folks at Slashdot having their typical discussion re: the incredible claims from ZeoSync.
http://slashdot.org/article.pl?sid=02/01/08/137246&mode=thread
Bill Luoma’s Compression Links
Bill has some Java LZ78 code here, along with a few other links to compression info.
Algorithm cuts VoIP bandwidth requirement
A company named Effnet Inc. is licensing a version of CRTP, a protocol that compresses packet headers in RTP streams. With small VOIP packets this can provide substantial savings.
PNG-Tech: Technical Issues regarding the PNG File Format
This site contains a collection of comments, impressions, comparisons, experiments and ideas regarding the PNG (Portable Network Graphics) file format, and related technologies: zlib (Data Compression Library), and MNG (Multiple-image Network Graphics). It is focused especially on the compression algorithms used in PNG.
Zip Home Page
Zip is a free .NET Zip File library which works with C# or other languages that use the CLR.
Zippity Do Dah
Al Williams wrote an excellent article on using the Info-Zip DLLs to manipulate Zip files. There are lots of commercial libraries that let you access Zip files, but your choices in free software are few and far between. So if you need a free solution, Al’s article is a must-read. Many thanks to Al for […]
CRUSH v1.8
Fed up with limited compression performance of Stacker, PKZIP, UC2, ZOO, ARJ and LHA? CRUSH will usually give 5%-50% improved compression over any other DOS compression tool, and yet allows the user to continue using the archiver already in use. CRUSH is fast and the ideal choice for users keen to save disk space. I […]
http://ourworld.compuserve.com/homepages/pocketware/crush.htm
Digital Image Compression
An article by Giovanni Motta and friends that appears in the Encyclopedia of Computer Science. Packs a lot of information into a short 8 or so pages.
Reader sreenu says: excellent article.
Compressione della voce a 2.4 Kbit/s
Part of a Master’s Thesis on voice compression, in Italian.
LSZip2 Data Compression Toolkit
A Zip compatible library with a very impressive set of claims. Works with dozens of programming languages, offers full support for PKZip archives from 1.10 on, and more. Free evaluation version available.
Reader Carl P. says This is a must have tool.
CiteSeer Compression References
CiteSeer tracks references between academic papers, and has links to online versions of a great many papers. The compression links at the top level look like they are a bit sloppy, but there are subcategories for Audio, Text, and Video, which look as though they may be better.
BraZip 4.0
Another archiver that supports the zip format? Yep, that’s what it is.Of course, BraZip does support TAR, RAR, GZ, LHA, and a host of other formats. Cruise around the web site a bit and you’ll find the same information in Portuguese.
mpeg2dec - a free MPEG-2 video stream decoder
A GPL product, with the following description from the site:
mpeg2dec is an mpeg-1 and mpeg-2 video decoder. It is purposely kept simple : it does not include features like reading files from a DVD, output picture scaling, audio decoding, synchronisation, etc… The main purpose of mpeg2dec is to have a simple test bed for libmpeg2. […]
Multi-ZIP-licity v1.5
A zip program that lets you unzip a whole batch of files all at once.
A brief guide to wavelet sources
S. Baum at Texas A&M keeps up a pretty good looking page of links to wavelet resources, categorized by type. Note that this page has apparently been zipped up to save space. The full content is inside the gz file.
Motion-JPEG CODEC
MainConcept makes a codec that encodes things in the Motion-JPEG format.
http://www.mainconcept.com/site/developer-products-6/motion-jpeg-sdk-4748/information-4809
.html
PICTOOLS RAPIDVUE
The Fastest JPEG engine available! Pegasus high speed JPEG engine offering the fastest JPEG compression and decompression available based on algorithmic optimization, assembly level enhancements, Pentium II and Pentium III optimization.
The Official FAQ for alt.binaries.sounds.mp3
Not exactly a compression topic, but close enough to make the cut.
Huffman Compression Engine
This program is currently capable of reading and extracting files made with LHA and other utilities that generate .lzh files, from -lh4- to -lh7-. The foundation of the algorithm for this program like ARJ is based on Haruhiko Okumura’s work on ar002, which was the foundation of LHA. Unlike Haruhiko’s work however, the dictionary size […]
Yahoo UNIX Archiving Links
Yahoo links to UNIX archiving software sources.
Lossless Transform Coding of Audio Signals.
M. Purat, T. Liebchen, P. Noll: Lossless Transform Coding of Audio Signals. 102nd AES Convention, Munich, 1997. A PostScript file.
Hirosuke Yamamoto’s Papers
This page has links to online versions of Hirosuke Yamamoto’s papers on data compression. Papers here on block sorting, coding, and more. The papers are all published in English.
Open G.729(A) Initiative
VoiceAge, of Montreal, announces the “Open G.729(A) Initiative,” which allows developers to freely use their G.729(A) codec object code for non-commercial purposes. This initiative provides you with an opportunity to work with the G.729(A) codec for free while developing products or applications. Take advantage of voice compression to prove that VoIP works efficiently and […]
Claude Shannon (1916 - )
Shannon’s entry in the Information Science Hall of Fame web page.
