HOLY CRAP!!! SUPER COMPRESSED 7Z!!!???

[Snipawolf]

I kid you not, my bro was DL'ing PSX games and we found one Bushido Blade 2...

The game itself is 669 MB, IT WAS COMPRESSED TO 27 DAMN MEGABYTES!!!! Holy shit... How the hell did someone compress that!!!!????

Does anybody have ANY clue as to how he did that!!??

I've never seen something compressed so LOW!!!

edit: Link for nonbelievers... http://www.snesorama.us/board/showthrea ... hido+Blade

[jackalope]

oh shit this is gonna be awesome

[Neddie]

We have found dynamic ultra compression. Returning to base for additional fuel.

[Ishach]

i had like 500mb of genesis roms that expanded to like 5gb

[Forboding Angel]

It has to do with what is being compressed and how the information can be re-arranged.

1 Gig of text files for example could be packed into nearly nothingness.

It's not entirely unbelievable.

[Forboding Angel]

http://download.yousendit.com/687BFED6742769DD

^^ 1.2 gig worth of ntai log files compressed into a 44 meg archive.

For a real life analogy...

Imagine a 2 liter bottle is empty. You stick it in the trash, it takes up a lot of space. Now imagine you take that same 2 liter bottle and squeeze the air out of it. That's kinda like compressing a text file.

Now, Imagine the bottle has about 3/4 liquid in it. Once again, you squeeze out the air, but the bottle still takes up more space in the trashcan than the empty one. That is kinda like compressing a bmp file.

Meh, useless info to a point, but it's surprising how many people don't already know this.

[Neddie]

Still, the fact that you can compress a PSX title to that extent is a testament to the lack of content in such.

[rattle]

I think the CD got filled with 0-bytes (or another repeated character) to overcome the gap (the game IS small) or for anti piracy reasons.

You can try this out yourself if you want. Just create a new textfile and fill it with the same character up to 5 MB and do the same with random characters, then compress them.

[iamacup]

does anyone remember the Myth group that released lots and lots of old games that they somehow got down to like 100 MB when they where infact over two CD's ...

UHARC or something.

[Radja]

psx games used a lot of non compressed audio/textures/text + empty zones (full of 0s) so that it would be easier to read

actually many games for psx can be compressed into <100Mb with any compression method

vagrant story is another good example, the game is fully 3d and when compressed its tiny


the problem with compression nowadays is that most file formats have some compression on its own, and saving like 100Mb out of an 4Gb iso is not usually worth the high cpu usage while extracting, and 100Mb is cheap in both HDD space and net traffic (specially in 1st-1'5th world, non-Spain countries)

[Slamoid]

ftr, I just made a backup of my entire WinXP registry, and tested this out.

It took a 72 meg registry file and compressed it to less than 2 mb.

Color me impressed.

[CompWiz]

ever compressed midi files?

i had like 400mb of 'em
compressed them with winrar down to 13mb

[rattle]

That's because they're uncompressed text.

[CompWiz]

Yep and there super tiny to start with

[Ishach]

does anyone remember the Myth group that released lots and lots of old games that they somehow got down to like 100 MB when they where infact over two CD's ...

UHARC or something.

i think they took out all the sound and movies and sometimes high-res textures.


im glad those days are over

[rattle]

Yeah they stripped music, videos and a lot more.
he most annoying part was to unpack all the stuff. Sometimes they reencoded audio just to get it down by another 50 MB and you sat there for half an hour waiting on it to finally unpack and reencode everything back together.

Some of these rips can still be found on underdogs as some of these titles are public domain by now.

[rcdraco]

RAR file at 30mb expanded to 100mb hehe

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NIFTO!!!!!!!!!!