Articles about compression

spy_eye_648

Be our Guetzli, says Google, to make beastly JPEGs beautifully small

Google's revealed details of a new JPEG encoder it calls “Guetzli” and which it says can shrink images by between 29 and 45 per cent without making them appreciably less pretty. Google bothers with this stuff because it wants web pages to load faster, so that people use the web more and see more of its ads. To that end, the …
Simon Sharwood, 17 Mar 2017

ITU-T wants video sizes to halve again by 2020

The International Telecommunications Union wants researchers to get busy on new video compression codecs, setting an ambitious target to double their squeezing compression power by 2020. H.264 is probably today's most-used video codec, but the ITU-T's asking for experts to submit proposals to double-down on H.265 codec, also …
Broccoli

Eating Brotli will improve Edge's inner health says Microsoft

Microsoft's announced it will adopt the Brotli compression algorithm that Google open-sourced last year in future versions of its Edge browser. Google gave Brotli to the world in September 2015, pointing out that it is compatible with the venerable “Deflate” algorithm but also offers a compression ratio somewhere between 20 …
Simon Sharwood, 22 Dec 2016
Vlera http://www.shutterstock.com/gallery-2241824p1.html

Ghost of DEC Alpha is why Windows is rubbish at file compression

Microsoft's made an interesting confession: Windows file compression is rubbish because the operating system once supported Digital Equipment Corporation's (DEC's) Alpha CPU. Alpha was a 64-bit RISC architecture that DEC developed as the successor to its VAX platform. DEC spent much of the late 1990s touting Alpha as a step …

Breaking compression, one year at a time

Sysadmin Blog Computers physically last a lot longer than vendors would like. The idea of the three-year refresh cycle is considered sacred amongst a certain crowd, but when pressed most will admit that refreshes of that nature are exceptionally rare. While we can keep equipment running for a decade or beyond, there are hidden issues in doing …
Trevor Pott, 7 Oct 2016

Google's new squeeze: Brotli compression open-sourced

Google wants to bring to life the HBO series Silicon Valley: it's pitching a new open source compression algorithm into the world, with the hope that it can eventually end-of-life the venerable Deflate. Brotli (“small bread” in Swiss German, apparently) follows on from Zopfli (“little braid,” also bread-themed), but with …
Stradivarius violin reproduction

Violin Memory FINALLY writes dedupe and compression into its latest Concerto

Violin Memory has fixed a gaping hole in its data management feature set by adding deduplication and compression to its Concerto memory array controller product. This will cut its effective cost/GB figures to new lows, and strengthens its competitive hand against other all-flash array vendors – such as EMX XtremIO, IBM …
Chris Mellor, 19 Aug 2014

IBM furtles all-flash biz bruiser FlashSystem

IBM has upped its all-flash array FlashSystem capacity to an effective 1.6PB by baking in SVC/Storwize features – including real-time compression. The FlashSystem V840 release 1.2 is built from three 2U rackmount boxes: an AE1 storage enclosure (as used in the 840) and two active-active AC1 control enclosures. The storage box …
Chris Mellor, 5 Aug 2014
Road leading to the factory

Is this storage kit the best? It DEPENDS. Why is your face turning red?

Storagebod Storage marketing is one of maddest and craziest parts of the technology industry: there are so many claims that don’t necessarily stand up to scrutiny and pretty much all of them require the caveat: "It depends…" It is very important to understand that it really does depend on a number of factors. For example, when your flash …
StorageBod, 12 Jun 2014
Fusion-io ioSgale 3.2TB card

MySQL daddy Monty talks up Fusion-io's data-stuffed flash

Fusion-io can cram more data into its ioMemory flash storage without cramping performance – at least that’s what it’s claiming about its NVM Compression technology. We are told NVM Compression is “a flash-aware interface that can double the useable capacity of ioMemory flash while eliminating the performance impact associated …
Chris Mellor, 2 Apr 2014
The World's Smallest Camera

Picture this: Data-wrangling boffins say they have made JPEGs OBSOLETE

Boffins have devised a new way of squishing data which could herald the end of the trusty JPEG picture format. A team at the University of California, Los Angeles, claim their new compression technique is much more efficient than the olden-days ways. As well as being useful for crushing images or streaming video, the new …
Jasper Hamill, 20 Dec 2013

Xerox admits there's no fix yet for number-fudging copiers

A flaw in the scanning compression software of some Xerox copiers which changes digits and numbers run through the machine is worse than first thought and will require a full software upgrade, the self-styled "Document Company" has said. The flaw was first spotted by German computer science student David Kriesel, who …
Iain Thomson, 14 Aug 2013
Xerox WorkCentre 7535

Xerox copier flaw changes numbers in scanned docs

Updated A German PhD student has found a flaw in some Xerox Workcentres that fudges the numbers on some scans thanks to poor data compression. Last Wednesday, computer science student David Kriesel was scanning in some building plans on a Xerox WorkCentre, and when checking the copies he found some of the dimensions of the plans had …
Iain Thomson, 6 Aug 2013

Intel demos real-time code compression for die shrinkage, power saving

Research@Intel Intel researchers have developed a way to make the increasingly tiny processors needed to power the impending "Internet of Things" even tinier: compress the code running on them. "We compress the code, make it smaller, and save area and power of integrated on-die memory," Intel Labs senior reseacher Sergey Kochuguev from ZAO …
Rik Myslewski, 25 Jun 2013
pic of toddler and baby with compression results

Brit firm flogs bit-crushing app so you can throttle your OWN data

pic of toddler and baby with compression results The networks - both mobile and fixed - have been squashing your data for years. But now a London company has launched a product allowing you to control it yourself. The latest company to launch a consumer-side compression product is UK firm Millenoki, which allows users to …
Simon Rockman, 7 Mar 2013

Google open sources very slow compression algorithm

Google has open sourced a new compression algorithm called Zopfli that it says is a slower-but-stronger data squasher than the likes of zlib. The product of Googler Lode Vandevenne's 20 per cent time, the day a week Google allows its staff to work on side projects, Zopfli is said to reduce files to sizes 3.7–8.3 per cent …
The Register breaking news

The perfect CRIME? New HTTPS web hijack attack explained

More details have emerged of a new attack that allows hackers to hijack encrypted web traffic - such as online banking and shopping protected by HTTPS connections. The so-called CRIME technique lures a vulnerable web browser into leaking an authentication cookie created when a user starts a secure session with a website. Once …
John Leyden, 14 Sep 2012
The Register breaking news

Why modern music sounds rubbish

A few year ago Bob Dylan echoed a complaint that many of you share with me from time to time: music sounds rubbish. Dylan hates recording these days, because the outcome is too loud and it's too bright. As he said: "You listen to these modern records, they're atrocious, they have sound all over them. There's no definition of …

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