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clrmame Discussion / 7Zip Compression Size Problem?
« on: 07 February 2013, 12:08 »
Hi, 
When I merged MAME 0.148 ROMs (.zip), using the rebuild option in ClrMamePro (.7z), everything went great and I have 8,720 .7z Files as it should be, but I noticed that the size is bigger than the set I found online (28.40 GB) and mine is (34.1 GB), so I opened one of the files (18wheelr) (77.7 MB):-
Then I extracted the files and Recompressed it using add to archive... (7-Zip) (65.4 MB):-
I noticed that the method and block are different, so Why it's different? and What does it mean? Did I do anything wrong while rebuilding? and How I can fix this to get the highest compression rate?
PS:
- I'm using 7-Zip 9.30 alpha (64-Bit) & ClrMamePro 4.09a (64-Bit)
- 7z command Lines in ClrMamePro:
Compress: a -y -r -ms=off -mx9 %1 %2
Delete : d -y -ms=off -mx9 %1 %2
Any help would be appreciated.
Thanks
When I merged MAME 0.148 ROMs (.zip), using the rebuild option in ClrMamePro (.7z), everything went great and I have 8,720 .7z Files as it should be, but I noticed that the size is bigger than the set I found online (28.40 GB) and mine is (34.1 GB), so I opened one of the files (18wheelr) (77.7 MB):-
Then I extracted the files and Recompressed it using add to archive... (7-Zip) (65.4 MB):-
I noticed that the method and block are different, so Why it's different? and What does it mean? Did I do anything wrong while rebuilding? and How I can fix this to get the highest compression rate?
PS:
- I'm using 7-Zip 9.30 alpha (64-Bit) & ClrMamePro 4.09a (64-Bit)
- 7z command Lines in ClrMamePro:
Compress: a -y -r -ms=off -mx9 %1 %2
Delete : d -y -ms=off -mx9 %1 %2
Any help would be appreciated.
Thanks