i wonder how to compress a file example. 900mb to the real small size...[below 300 mb below]

cuz i saw a lot of internet file they can compress into real small file ...

need help

What file is that?

It is impossible to achive that kind of compression ratio with the likes of video files and music files.

Yes, it depends on what file you have.

Multimedia files are usually encoded in a very compressed format and compressing it again won't help to reduce the file size much.

On the other hand documents like XLS or DOC can be compressed really a lot.

is EXE files...
and iso. ??

well can teach me some. so mayb i will try it ?
cuz i had 904mb files i wannna compress til below 700mb ...
i try normal compress only can save up i guess 50mb

With exe or iso, it may work or it did not. You will just have to try by error.

there is once, i download an installer with torrent

it is a torrent split file, the size i am downloading is only less then 1gb, however after i extract them, it become 4.xgb

how is this possible?

A bit OT but since we are on WinRAR, is there a possibility to speed up the extracting process?

that i try to said... my friend around 10 people need to know this lol
someone please teach plz if u know tat.

WHat kind of files he downloads? Movies? e-books? Software?


Generally, faster CPU and HDD.

installer, game installer~~~~

to be more accurate, disc image. I wonder disc image can be compress that much since it is already in a compressed format

This post has been edited by Sky.Live: May 11 2006, 11:12 AM

If that was an ISO of a game/application installer, there are chances that you can get good compression ratio. If that was an ISO of a movied DVD, chances of a good compression is slim.

so can teach some method hwo to do that?
asellus..
share ur knowledge for us.
thanks

it's depend on the thing u want to compress. TXT tend to compress better than Video file as they have different algorithm. instead of compressing that much,you can just split the files. much better IMHO

It really depends on the file type

How compression works? Basically by reducing repititive information.

Try duplicating a line "Lowyat.NET rocks" in notepad for 5000 times. The file size might be big but once you compress it the file size will become probably thousand times smaller.

How it works? There are various methods ; give you an easy-to-understand example, it could be the compressed file just stores "Lowyat.NET rocks * 5000" and processing will be done when you uncompress the file.

For encoded video files like RMVB, it is already encoded using other algorithm such that repeated information has been reduced to a very low level, hence when you compress it again you won't get much reduction in file size.

If you are really interested in knowing, why don't read wikipedia?
http://en.wikipedia.org/wiki/Data_compression

Did you mean after extracting out the files from the ISO it goes from 1GB to 4GB?

This post has been edited by samurai1337: May 19 2006, 09:10 AM

u can split it using HJsplit?

why use other software when u can split it using winrar?

YA! agree wif HMMaster

unless u dono winrar got that feature

ever heard of KGB Archiver??



KGB Archiver

This software have insane compression ratio...it can compress 4gig to just 1.22mb...

hmm... i don't really believe it that. If your source is video or mp3. U cannot compress like that. Unless your source is txt.

Just now i just do a test. i use that sofware compress my mp3. source is 6.1MB. After compress it's 5.8MB. I used winzip. AFter compress it's 5.9MB.

I don't think it will do any help with audio and video file

This post has been edited by allvin: May 20 2006, 02:56 PM

maybe..give it a try,,,hehe