UHA File Compression, 99MB = 600mb!?! How Do They Do It??

**CrashPeer44** · March 18th, 2006, 07:41 AM

Recently i downloaded a ISO image that was 99MB I read the comments, it said it was HIGHLY Compressed and words, so I downloaded it.

It was in a zip file which contained and EXE and other files. I launched the EXE and a MS-DOS app appeared and it was called UHA & it began uncompressing.

10-20 min later I had a 600MB ISO!!!!!! I would love to be able to do this for my files as well.
Any Ideas ON HOW they do it.

I downloaded winUHA but all I got was the same effect if I put a file in a ZIP

**Krell** · March 18th, 2006, 08:23 AM

Just because the iso is 600 mb doesnt mean there is that much data . .

what was the exact volume of the files IN the iso?

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**CrashPeer44** · March 18th, 2006, 08:27 AM

well krell it was a N**** Burni*** Blahrom (you can guess the letters) iso & it was the exact volume of data on the ISO
and I have also see 4-5 CD games compressed the same way too

**WE_DELIVER** · March 18th, 2006, 09:34 AM

I think the .iso might be padded then. But I could be wrong.

**mcovey** · March 18th, 2006, 09:40 AM

data compresses well
compressed data like images and videos dont, text and binary do.
you can squish programs down really small, because there is a lot of repeat data, etc.

**Krell** · March 18th, 2006, 09:48 AM

No i cant guess it . . not enough caffeine, but makes sure you have no hidden files etc

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**napho** · March 18th, 2006, 12:13 PM

I think I recall a CD Burning program that was around 100MB instead of 600. The ISO could've contained huge .CAB files which decompressed to much smaller finished files. The 100MB rip just included the smaller files. The program was probably shrunk like the nLite XP one which makes XP alot smaller when installing. It wasn't so much the UHA doing the shrinking as the handling of the finished files. ISO's are bloated.

**shawners** · March 18th, 2006, 12:42 PM

Uharc is a great compression tool, and all the files needed are there. I had games I downloaded and they would expand far beyond what winrar could do. I think i downloaded a few Red Alert games and they did it.. This was years ago. Even xbox games get great compression. 1.67gig to 3-4gig file.. Very impressive =)

**huki** · September 15th, 2007, 08:26 AM

i had tried downloading that kinda uharc files.. they arent ordinary "winUHA" files. they are much different. the full game after installing was 750MB and the uharc files were just 150MB (this time they were just files, not iso). i was searching for that awesome compresor, but only got the archiver version
there were 3 files in what i downloaded-->data.uha, setup.bat and uharc.exe
the full size was in "data.uha" file while the setup.bat was only in KBs. and the other uharc.exe file
mysterious

**Signa** · September 15th, 2007, 09:42 AM

im pretty sure that the ISO was padded. i have downloaded tons of games for my PS2, and they all when i download them are the size that they should be in terms of game data. most of them however, do decompress to 4.5 gigs before burning. im certain its padding.

on the otherhand, i did have some .7z files of super nintendo roms. 2 gigs become 17 when you decompess that.

**jazzedup** · September 15th, 2007, 10:05 AM

wow... i've heard of a tool called k3b or something. once i got a vista cd which was 1.5 MB... yes mega bytes

when uncompressed, it became 900 mb!!

**isus** · September 15th, 2007, 10:55 AM

Originally Posted by huki

i had tried downloading that kinda uharc files.. they arent ordinary "winUHA" files. they are much different. the full game after installing was 750MB and the uharc files were just 150MB (this time they were just files, not iso). i was searching for that awesome compresor, but only got the archiver version
there were 3 files in what i downloaded-->data.uha, setup.bat and uharc.exe
the full size was in "data.uha" file while the setup.bat was only in KBs. and the other uharc.exe file
mysterious

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