The final draft of the JBIG2 specification from JPEG. The specification has been adopted as the international standard ITU T.88, and, later, as ISO/IEC 14492.
Created: 05/03/2008
by Maxim SmirnovMore...
The page of TSG SA WG4 working group of 3GPP. TSG SA WG4 (Codec) deals with the specifications for speech, audio, video, and multimedia codecs, in both circuit-switched and packet-switched environments. Other topics within the mandate of SA WG4 are: quality evaluation, end-to-end performance, and interoperability aspects with existing mobile and fixed networks (from codec point of view).
The 3rd Generation Partnership Project (3GPP) is a collaboration agreement which brings together a number of telecommunications standards bodies. The original scope of 3GPP was to produce globally applicable Technical Specifications and Technical Reports for a 3rd Generation Mobile System based on evolved GSM core networks.
Created: 31/01/2006
by Maxim SmirnovMore...
The unofficial MPEG Audio page at University of Hannover. The page has news about MPEG Audio, overviews, a set of usefull links, MPEG Audio FAQ, MPEG-4 Audio standard drafts, some reference software.
Created: 31/01/2006
by Maxim SmirnovMore...
This is a list of ITU-T Recommendations on "Transmission systems and media, digital systems and networks" (Series G). It contains an index for the G.7xx audio codecs family. One can check the status of documents, see their contents and buy them online.
Created: 30/01/2006
by Maxim SmirnovMore...
Big file heap with ISO standards files and additional files: conformance bitstreams, reference software source code, etc...
Created: 08/11/2005
by Dmitriy VatolinMore...
Home page of MNG: A PNG-like Image Format Supporting
Multiple Images, Animation and Transparent JPEG. Was released on 31 January 2001.
MNG includes a number of interesting features:
* object or sprite-based approach to animation, with commands to move, copy and paste images (rather than replicate them as in GIF)
* nested loops for complex animations
* way better compression than GIF animations
* support for difference (or ``delta'') images for still better compression
* integration of both PNG and JPEG-based (``JNG'') images
* support for transparent JPEG images
* low-complexity and very low-complexity subsets for simpler implementation
Created: 14/11/1999
by Mark NelsonMore...
JPEG-LS is the new lossless/near-lossless compression standard for continuous-tone images developed by ISO/IEC JTC1/SC29/WG1 (final draft international standard FDIS14495-1 as of Novembr 1998). The standard is based on the LOCO-I algorithm (LOw COmplexity LOssless COmpression for Images) developed at Hewlett-Packard Laboratories
Update: The HP site has just added a JPEG-LS plugin for Photoshop, in addition to the HP implementation that has been there for some time.
Created: 17/04/2002
by Mark NelsonMore...
The committee draft of the JPEG2000 specification. This is not the final specification, but it should be very close.
Note: the Zip file disappeared sometime in July 2002, this link has been updated to point to a PDF version of the draft.
Created: 07/02/2000
by Mark NelsonMore...
JJ2000 is a Java implementation of a JPEG 2000 codec. The web site states that JJ2000 is under consideration to be a reference implemenation of the standard. JJ2000 is now freely available to all, and may be freely used in products that implement JPEG 2000-Part I.
The page also includes links to a white paper, presentations, and other related web pages.
Version 4.1 is the last release of the JJ2000 project, which officially terminated in September 2001.
Created: 06/09/2000
by Mark NelsonMore...
A final draft of the JPEG-LS document. This is not the standard, but it is bound to be pretty close. The doc says: This document is the final committee draft of CD 14495, Lossless and near-lossless coding of continuous tone still images (JPEG-LS) agreed by ISO/IEC JTC1/SC29 to be made available for public comment on WG1 web site, www.jpeg.org.
Created: 24/11/1999
by Mark NelsonMore...
Developed in the scope of MIGRATOR 2000 project (www.migrator2000.org), this site presents a graphical user interface to the three currently available codecs (VM, JJ2000, Jasper) as well as validation and parsing services to J2k codestreams and JP2 files.
It's currently a widely used tool within WG1 (JPEG) to perform compliance tests on coders and codestreams. Site requires free registration for purposes of tracking stored images.
Created: 23/01/2004
by Mark NelsonMore...
This page contains a summary of the Federal Bureau of Investigation's image coding standard for digitized fingerprints, developed and maintained by the FBI, Los Alamos National Lab, and the National Institute for Standards and Technology. The standard is a discrete wavelet transform-based algorithm referred to as Wavelet/Scalar Quantization (WSQ).
Created: 19/12/1998
by Mark NelsonMore...
The page contains prepublished versions of H.263 standard, H.264 / AVC standard, H.264 conformance specification, H.264 reference software specification. Other pages of the site--it's the homepage of the video trace research group at Arizona State University--have some papers and software.
There are also several video testing sequences. The sequences are in the common YUV 4:2:0 format (files are zipped) and in CIF (Bridge close, Bridge far, Highway, Mobile, Paris) and QCIF resolutions (Bridge close, Bridge far, Carphone, Claire, Container, Foreman, Grandma, Highway Mother and Daughter, News, Salesman, Silent).
Created: 11/07/2005
by Maxim SmirnovMore...
Wotsit's Format, the complete programmer's resource on the net. This site contains file format information on hundreds of different file types and all sorts of other useful programming information; algorithms, source code, specifications, etc. This page has information on scads of archive formats.
Created: 21/09/1999
by Mark NelsonMore...
An impressive set of links to papers, schedules, articles, and contacts for MPEG. Clearly the place to go for information relating to the standardization process.
Created: 15/05/2004
by Mark NelsonMore...
Full text of MPEG-4 AVC/H.264 standard
(draft ISO/IEC 14496-10 : 2002 (E), draft ITU-T Rec. H.264 (2002 E) ).
Created: 14/05/2005
by Dmitriy VatolinMore...
The DivX Certification Program was created in response to overwhelming consumer demand for DivX-powered video products. With the new program, DivXNetworks is enabling third parties to create "DivX Certified" products that are rigorously tested and fully compatible with the entire suite of DivX™ video technologies.
Created: 01/03/2004
by Mark NelsonMore...
This document describes the proposed format of the OpenDML compliant AVI extensions, specifically for the Motion JPEG DIB AVI file. This format is an extension to the AVI M-JPEG DIB as defined in the JPEG DIB FORMAT technical note from Microsoft. The format is based on the ISO 10918 defined JPEG format.
Created: 03/02/2003
by Mark NelsonMore...
This appears to be the Data Compression Blue Book published by the Consultative Committee for Space Data Systems. It's a nice document, but I'm not sure if the standard described here is actually in use. As is so often the case with standards documents, I find myself yearning for some accompanying reference code. Alas, there is none that I know of.
Note: a related document discussing performance characteristics of the recommendate can be found
here
Created: 19/01/2003
by Mark NelsonMore...
This is a copy of the AC3 Audio compression standard from the Advanced Television Systems Committee (ATSC.) It's nice to see a standards committee that is able to make their documents freely available to the public.
Created: 19/01/2003
by Mark NelsonMore...
Sony's document gives a concise description of DV format video, ranging from mechanical specifications to the details of the compression format. Read this and you will feel like a DV expert.
Created: 19/01/2003
by Mark NelsonMore...
This is the data compression standard that implements the LZJH algorithm, and is used in V.90 and V.92 modems. The ITU wants to charge you a few bucks for this standard, but if you believe the post from Pete Fraser (listed elsewhere on DataCompression.info) you can get three free standards per year. Maybe this ought to be one of them.
Created: 09/11/2002
by Mark NelsonMore...
A format that can be used to send the differences between documents with some efficiency. This is part of a proposed extension to the HTTP standard.
Created: 29/09/2002
by Mark NelsonMore...
According to Pete Fraser, you can download three free specifications from the ITU per year, after free registration. This is a great deal - these specs can run into the hundreds of dollars per copy, and if you aren't near a university library, you may have no other way to get them.
Created: 15/09/2002
by Mark NelsonMore...
This directory appears to contain draft standards for H.261, H.263, and H.264.
Note: this site moved to the current ftp location as of 9/15/2002.
Created: 15/09/2002
by Mark NelsonMore...
Nice detailed documentation on the structure of an LHA file. If you're going to attempt to support LHA files, you need a pointer to this doc.
Created: 15/09/2002
by Mark NelsonMore...
The video codec formerly known as H.26L and now referred to as MPEG-4 Part 10 is starting to pick up a real head of steam in the video industry. Both hardware and software supporting this standard are starting to be available to manufacturers, and it seems likely that the 50% improvement in bandwidth is going to be irresistible in the future.
EE Times has a report on MPEG-4 Part 10 news from the International Broadcasting Convention in Amsterdam, including news that the codec probably can't be released on a royalty-free basis:
Created: 15/09/2002
by Mark NelsonMore...
Real Networks is going to add support for the Ogg Vorbis audio format in their client software, ZDNet reports. This could go a long way towards legitimizing the upstart competitor to MP3.
Created: 08/08/2002
by Mark NelsonMore...
This is described as the ftp server for the Video Coding Experts Group, which is working on H.26L and other video projects. A ton of stuff here, no guideposts or indices, have at it.
Created: 06/06/2002
by Mark NelsonMore...
This is the ITU page where you can purchase a copy of the JBIG specification for the modest price of 29 CFH. (You don't really expect them to give this stuff away, do you?)
Created: 21/03/2002
by Mark NelsonMore...
Links to the various parts of the H.263 standard on the ITU page. Get out your credit card if you want a copy - the ITU doesn't give things away!
Created: 27/01/2002
by Mark NelsonMore...
The second generation fo H.263 is working on supplanting the original. Naturally, we need a standard for sending H.263v2 packets over RTP streams.
Created: 27/01/2002
by Mark NelsonMore...
These pages will test the various features available for GIF89a animation. Each feature is tested as independently as possible, allowing you to identify what features your browser supports and how well. The pages isolate features to prevent combination collisions (one error causing another feature to fail). Each test is composed of an animation that tests the most basic quality of the function.
Created: 07/12/2001
by Mark NelsonMore...
This is a copy of the original GIF specification from CompuServe. It was expanded significantly by the 1989 specification.
Created: 07/12/2001
by Mark NelsonMore...
This page has the standard publication that defines ECMA-222, which is also apparently known as ALDC. I don't know where this standard is used.
Created: 05/12/2001
by Mark NelsonMore...
The deflate technical specification in HTML, by L. Peter Deutsch. This document is the basis for RFC 1951. There are many links to this document stored in various places, but this database will only have links to the versions at www.cdrom.com and the IETF pages.
Created: 23/08/2001
by Mark NelsonMore...
This article in EE Times posits that MPEG-7 will be ratified sometime within the next few weeks. Now the software and hardware developers need to get to work.
Created: 12/08/2001
by Mark NelsonMore...
This RFC defines the 32 Kbps toll quality MIME type. The true specification for G.726 is owned by the ITU, and will not be generally available on the net. So knowing how it is encoded only somewhat useful.
Created: 15/07/2001
by Mark NelsonMore...
ZDNet reports that MP3 patent holders, Fraunofer Institute and Thomson Multimedia are shopping around a new version of the aging audio standard. Formats such as Microsoft's Windows Media format have been eating into the MP3 dominance on the net.
Created: 16/05/2001
by Mark NelsonMore...
EE Times reports on a development which would allow HDTV and NTSC to coexist on the same frequencies. It's a hack, and it takes a lot of compression, but it keeps existing set owners online after cutover.
Created: 09/03/2001
by Mark NelsonMore...
Cisco talks a bit about new products using V.44 compression licensed from Hughes Network Systems. A few claims, not much in the way of facts.
Created: 14/07/2000
by Mark NelsonMore...
The ITU has officially adopted the v.44 standard, which is starting to ship in mid-2001 on modems supporting the v.92 standard. V.44 uses a compression algorithm known as LZJH, which was invented by Jeff Heath and is owned by Hughes Network Systems. According to Jeff, ITU testing showed that V.44 was 20% to 60% better than V.42bis on
typical internet web downloads.
Created: 11/07/2000
by Mark NelsonMore...
The description of the point to point protocol, which of course includes a little tiny bit on compression, since you can specify compression in a packet header.
Created: 26/04/2000
by Mark NelsonMore...
Wotsit's description of the JAR file format. Robert Jung's JAR format, not the JAR format used to distribute Java classes.
Created: 14/02/2000
by Mark NelsonMore...
At long last the JPEG 2000 spec has been approved. Developers can now start working on products that will support this quantum leap in image compression.
Created: 28/12/1999
by Mark NelsonMore...
The original call for contributions for JPEG 2000. This is of course way out of date, but it may be of historical interest.
Created: 24/11/1999
by Mark NelsonMore...
MPEG-4 is an ISO/IEC standard being developed by MPEG (Moving Picture Experts Group), the committee which also developed the Emmy Award winning standards known as MPEG-1 and MPEG-2.
This document appears to be an overview of the standard as it existed in approximately 10/99
Created: 23/11/1999
by Mark NelsonMore...
As it says, this is the home site of the committees. You need to be a member to access some areas, but there is plenty of information here for the common man as well.
Created: 19/11/1999
by Mark NelsonMore...
This is a copy of the second GIF specification from CompuServe. It added quite a few features to the GIF format. Probably the best well known of these would be the ability to add animation to GIF files.
Reader Andrew T. says: The definitive document, what more can you ask for?
Created: 21/09/1999
by Mark NelsonMore...
W3C Recommendation 01-October-1996. This document describes PNG (Portable Network Graphics), an extensible file format for the lossless, portable, well-compressed storage of raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-color, grayscale, and truecolor images are supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits.
Created: 21/09/1999
by Mark NelsonMore...
