Saturday, October 18, 2008

Future Codec???

Well there are lot of codec out there both commercial and free and here is the one new which has almost become the poster boy of codec at least this week when this was written.

Dirac is an advanced royalty-free video compression format designed for a wide range of uses, from delivering low-resolution web content to broadcasting HD and beyond, to near-loss less studio editing.

Originally created by the BBC Research department, the Dirac project has expanded to include companies providing hardware equipment and software for handling Dirac video, as well as an active open-source development group.

The name "Dirac" is a reference to Paul A. M. Dirac, British physicist and winner of the 1933 Nobel Prize in Physics. The prize was shared with Erwin Schrödinger, for whom the Schrodinger implementation of Dirac was named.

The real hype is this file format should be very versatile and capable of handling highly compressed web video through HD quality up to almost loss less quality.

This codec has been included in new major release of VLC media player this week that includes support for decoding Dirac video using the Schrodinger library. VLC provides cross platform video playback, encoding and multiplexing functions for a wide variety of media types sure other players will follow soon.

The algorithm is wavelet based, and works on ratedistoration optismisation (RDO) principles. The attempts to balance the inevitable trade off between better compression and distortion in decompressed images, and was originally developed on the basis of MPEG-2. Its full details are available from BBC.

It may even be the next DivX who knows only time will answer.

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Tuesday, October 7, 2008

DDR II VS DDR III

System memory market has become as big as other component the main reason is due to memory hunger programs and games which brings even the 4gb+ 800mhz latest RAM to its knees and we in common are willing to suck the juice out of our program and games with all options turned on. Of course an typical office system will never need more than 2gb of ram as of now to overcome basic office job like word processing and internet usage. So today there is a huge hype over the DDR 3 ram lets see what it has in paper and in reality.

Tech Spec:
Appearance in common :-*DDR II 2002 *DDR III Not Yet early 2009.
Data Transfer Rate :-*DDR II 400-800 Mbit/s *DDR III 800-1600 Mbit/s.
Voltage :-*DDRII 1.8 V ± 0.1V *DDR III 1.5 V ± 0.075 V.
Banks: :-*DDR II 4/8 *DDR III 8.
Prefetch :-*DDR II 4 bits *DDR III 8 bits.
Burst Length :-*DDR II BL=4,8 *DDR III BL=4,8.
Topology :-*DDR II Conventional T *DDR III Fly-by.
CAS Latency :-*DDR II 3-5 *DDR III 6-10.
Chip Packaging :-*DDR II 60 BGA for x4/x8 and 84 BGA for x16 *DDR III 78 BGA for x4/x8 and 96 BGA for x16.
Chip Capacity :-*DDR II 256 Mbit-4GB *DDR III 512 Mbit-8GB.

The above sheet is a technical view, but piratically if you have planned to adopt or migrate to DDR3 it may have a big bite in your pocket since now DDR3 are priced extremely high and even though there are motherboards available which support DDR3(only from intel backing AMD fan boys have to wait a while since DDR3 has not yet attracted AMD guys.)memory like GIGABYTE X48T-DQ6 and Asus Striker II Extreme even Biostar offers P35 with DDR3 they also are targeted at enthusiasts. Also don't forget to note that latency which plays a equal role in performance are as DDR2*1066 are out with 5-5-5-15 and even can expect DDR2 -1111 later as they are now crawling in drawing board, Where as in other hand we can see only DDR3-1066 at *9-9-9-24 or minmum of 7-8-7-14 not more than that at least for now. So its clear that at least for couple of years DDR2 will dominate the market.
 
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