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/vr/ - Retro Games

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File: 13 KB, 256x256, Apps-7-Zip-icon.png [View same] [iqdb] [saucenao] [google]
2510368 No.2510368 [Reply] [Original]

Ola hom/vr/es

What's the best compression settings for storing PS1 ROMs? I find that the "Ultra" setting of 7-zip isn't exactly optimal

>> No.2510408

>>2510368

help, please?

>> No.2510412

>>2510368
/g/ or a pirating community might be a better place to ask something as autismal as this

>> No.2510415

>>2510368
Use pop station GUI to compress them. The resulting file will be compressed very well and playable on most decent emulators

>> No.2510425

>>2510368
>the 10 gig drive in my moms laptop iz fool so i need to zip my romz wut do?

>> No.2511507

.ecm
but that's just an uneducated guess. Search for ecmtools.

>> No.2511579

>>2510415
What's its Weissman score?

>> No.2511829

>>2511507
I've got an ECM which is about 10 megs smaller than the ISO it extracts. I question the point.

>> No.2511863
File: 140 KB, 560x570, 1434901897755..jpg [View same] [iqdb] [saucenao] [google]
2511863

>>2510368
Lots of games already compress their data, so compressing again has diminishing returns because the files already have pretty high entropy. The only data you'd be able to compressing further would be uncompressed graphics (a rarity) and code (which isn't terribly compressible).

>> No.2511889

>>2511863
>Lots of games already compress their data,
Not on the ps1, they repeated the same data over and over throughout different sections of the disk to reduce seek time.

>> No.2511906

>>2511889
I'm no PSX expert, but are you sure? Reducing seek time sounds plausible, but do games often read the disc while playing (I know FF7 reads world map data in real time), or mostly at load screens? If it's the former, not only will the data prolly be uncompressed, but multiple copies of data would provide tons of targets for compression. If it's the latter, compressed data would load from disc faster than uncompressed data, even if you have to decompress it, and then you have practically nothing to compress because it's already highly non-redundant data. Seems like it could go either way...

>> No.2511915

>>2511906
that went over my head but if you open up ff7 with a model editor you'll see multiple copies of the same models all over the place to reduce seek time. the prerelease version of ff9 fits in a single disk, with the videos and everything intact. they only get divided into multiple disks after development has ended, once again, to reduce loadings

>> No.2511919
File: 32 KB, 595x634, tomb raider 2_sector map.png [View same] [iqdb] [saucenao] [google]
2511919

>>2511906
He's talking out of his ass. That is 100% bullshit. Look at the file structure of any ISO.

>> No.2511923

>>2511915
You have absolutely no fucking clue what you're talking about.

>> No.2511925

>>2511919
might be true for tomb raider where loadings aren't a big problem
can you open a final fantasy disk to check?

>> No.2511929

>>2511923
but the ff9 prerelease is true :(

>> No.2511946 [DELETED] 

>>2511919
never mind, I'm probably talking out my ass.

>> No.2511956

>>2511919
nevermind, I'm talking out my ass
I'm probably thinking of data redundancy spanning multiple discs not single discs games

>> No.2512826

The best way is not being a poorfag and storing the stuff uncompressed and ready to play

>> No.2512846

>>2511915
I Did read someone made 1 disc versions of the ps1 ff games but I couldn't find them