DGS compression?
Goran UnreaL Krajnovic
compression claiming some unbelievable compression ratios, I've searched
this group but I haven't found any mention of it (or dismissals as
snakeoil).
The author is Guillaume Defosse, (apparently) a musician and inventor who
invented a compression algorithm (or, as he calls it, a 'compression
language' - the english text is very obviously translated from french)
called DGS which claims to be able to compress a 108-minute movie onto a 16
MB memory card, and the decompression software itself uses 11 MB of the
data, while the actual movie takes the remaining few megabytes. There is no
mention of image resolution, but they claim a frame rate of 25 frames per
second. Another example quoted by the authors is a digital photo camera
which could fit 150 images at high quality onto an 8 MB memory card.
What differs this DGS from others (ZeoSync comes to mind) is that these
people actually claim to have a working sample, and they are using a Nokia
9210 Communicator to play a movie. They even have a QuickTime movie
available for download - a videocamera filmed a Nokia playing a portion of a
Tina Turner concert.
However, by examining the video clip, it is not possible to tell whether any
significant compression is really achieved or it is faked. The N9210 comes
with a video player which uses a specific .nim video format which is some
sort of highly compressed video+audio (a 4 minute clip takes 2 MB of space,
and video resolution is usually on the order of 200x100 or the likes, with
5-10 fps - something like low quality, low bitrate MPEG-4 or RealVideo).
The video clip seems to indeed have a fluent frame rate at high video
motion, and the nokia video player screen claims that the video clip is
under 7 minutes long which can, if not on a 16 MB card, definitely fit onto
a 64 MB memory card with the standard nim format and probably be made to
play at a decent frame rate - so there is no definite proof that a
108-minute movie would fit on a 16 MB card. There is a 'Nokia Multimedia
Converter Pro' on the web - an application for those interested in
experimenting with compressing files into standard nokia .nim format.
The website is http://www.hollywood.org/DGS/index.html - check it out if you
want. Interestingly enough, the website also has a warning stating that
there is as yet no DGS software available for download and that some other
sites are offering it, but this site claims they are scammers. Go figure.
I hope I don't get branded as a troll or snakeoil salesman for this, I just
heard about this today and thought it interesting to share.
If anyone has any more information on this, I'd like to hear it...
--
UnreaL. [ unreal at fly dot srk dot fer dot hr ]
[ Standard disclaimers apply. Personal opinions only. May explode in fire. ]
Mark Nelson
>compression claiming some unbelievable compression ratios, I've searched
>this group but I haven't found any mention of it (or dismissals as
>snakeoil).
Perhaps this guy has read of the great success of Madison Priest at bilking
investors and wishes to get in on the game.
http://www.jacksonville.com/tu-online/stories/050502/met_9322821.html
http://www.jacksonville.com/tu-online/stories/050602/met_9326453.html
--
|
| Mark Nelson - ma...@ieee.org - http://MarkNelson.us
| DataCompression.info - http://www.datacompression.info
| Current compression news - http://datacompression.dogma.net
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