PSX bare vs PSX 7z

[demonseed]

Hey Guys

I had my psx games uncompressed to bin and CUE.. they load almost instantly.

I acquired some missing games in 7z and thought I would try them as is.. they load fairly quick with minimal wait time.....  My question is how much does 7z save on space?  What typically is the loading time difference?

 

Thanks

Jim

[Yeuxkes]

It depends on what data is on the discs. If the game has a lot of redbook audio then the compression isn't that great, maybe 15-20%. If however there isn't much redbook audio on the disc then you can get compression ratios of over 75%.

Another thing is to take into consideration that rar files unzip much faster than 7z albeit with slightly lower compression ratios (couple Mb difference).

Then there is a third option; compress your bin/cue files with chdman from MAME. This is currently only supported  by the Mednafen/Beetle core in retroarch afaik. This combines imo the best of two worlds, great load speed since it's a supported format and great compression because chdman compresses the redbook audio with flac algorithm thus getting even better compression and smaller file sizes. 

It's up to you do decide what you want, here's the options you got:

• zip/7z/rar: wait 5-60sec (depending on your cpu speed and size of archive) for the unzipping process but save on disc space
• bin/cue: start the game right away but lose out on disk space
• chd: instant load and save on disc space but limited to Retroarch/libretro

I have not yet converted my playstation games to chd but did so for a couple of other systems, the instant load and MASSIVE space I saved was really worth it though. My SegaCD games went from  about 80Gb compressed RAR to 45Gb compressed CHD files.

[32assassin]

neither !!!!!!

download or convert them to PSP ready format

I have 62 games on a PI and they eat up 3.6 Gigs

pbp format :  

you get the benefits compressed files

- single file  no need for a Cue and bin file

-No load lag since their is no need to extract  them.

[Yeuxkes]

12 hours ago, 32assassin said:

neither !!!!!!

Just to prove a point I compressed FFVIII in three formats; RAR5, PBP and CHD.

PBP has the worst compression of the three; RAR5 comes in second place and CHD wins out.
RAR5 however needs to be unzipped which takes time and additional HD space but the two other formats don't need that and can be run as is if the emulator supports it.

I'd say CHD wins out bigtime here, 1.72Gb vs 2.06Gb for pbp

 

[wallmachine]

7z gives you the option of "loading game" if you're into that. Identical to CHD size but just compressed and you get to use any emulator.

Final Fantasy VIII (USA) (Disc 1).7z ----> 473 MB 

Final Fantasy VIII (USA) (Disc 2).7z ----> 407 MB

Final Fantasy VIII (USA) (Disc 3).7z ----> 417 MB

Final Fantasy VIII (USA) (Disc 4).7z ----> 424 MB

Total: 1.72 GB

 

Sony PlayStation HyperSpin Database: 1,807 Games ----> 456 GB

[Yeuxkes]

I left out 7z because the time to unzip is much longer than RAR5 even though it has better compression which I mentioned in my first post. I still prefer a slightly faster load time over let's say a 10Mb gain in filesize but having to wait an extra couple of seconds.

In the end it all comes down to user preference, for my own needs I'm going the CHD route because I'm using retroarch anyways and the single compressed file and insta load are a big bonus. It's up to the OP to decide what he wants to do in the end. There's enough data in this thread to make up his mind.

[wallmachine]

10 TB 7200 RPM drive:

Final Fantasy VIII (USA) (Disc 1).7z ----> 473 MB, Finished 7z extraction which took 20 seconds

Final Fantasy VIII (USA) (Disc 2).7z ----> 407 MB, Finished 7z extraction which took 18 seconds

Final Fantasy VIII (USA) (Disc 3).7z ----> 417 MB, Finished 7z extraction which took 18 seconds

Final Fantasy VIII (USA) (Disc 4).7z ----> 424 MB, Finished 7z extraction which took 18 seconds

 

One system you will want to 7z|rar or whatever is Nintendo Wii U each .WUD file is 23.3 GB. 138 games dumped matching HyperList = 3.21 TB not compressed but 7z compressed = 1.18 TB and the 5 games which weren't included for some reason add an additional 57.1 GB

[demonseed]

Hey

Most of mine are unzipped... but I have acquired a more that are 7z and I did not want to un zip as they are not played often. What is the program to convert from bin, 7z to CHD?

[Yeuxkes]

1 hour ago, wallmachine said:

One system you will want to 7z|rar or whatever is Nintendo Wii U each .WUD file is 23.3 GB. 138 games dumped matching HyperList = 3.21 TB not compressed but 7z compressed = 1.18 TB and the 5 games which weren't included for some reason add an additional 57.1 GB

You can compress wud to wux and possibly get better results than doing a regular 7z|rar. It's also a supported format by Cemu so it loads instantly.

For example Mario Kart 8 (USA).wux = 5.1Gb and Super Mario 3D World (USA).wux = 2.6Gb

3 minutes ago, demonseed said:

Most of mine are unzipped... but I have acquired a more that are 7z and I did not want to un zip as they are not played often. What is the program to convert from bin, 7z to CHD?

It's chdman and comes together with MAME. You will need any version later than 0.145 because they went from v4 to v5.

It's a cli so you will need to type out some code or use a batch file to process your roms. It requires bin/cue files.
The command you want to use is like this: chdman.exe createcd -i "input.cue" -o "output.chd"

[wallmachine]

13 minutes ago, Yeuxkes said:

You can compress wud to wux and possibly get better results than doing a regular 7z|rar. It's also a supported format by Cemu so it loads instantly.

For example Mario Kart 8 (USA).wux = 5.1Gb and Super Mario 3D World (USA).wux = 2.6Gb

It's chdman and comes together with MAME. You will need any version later than 0.145 because they went from v4 to v5.

It's a cli so you will need to type out some code or use a batch file to process your roms. It requires bin/cue files.
The command you want to use is like this: chdman.exe createcd -i "input.cue" -o "output.chd"

cheers for the info. unfortunately i like to keep the games as original file