| Versions tested: | 1.12 |
| Optimal parameters: | default |
| Links: | ftp://ftp.sac.sk/pub... http://www.technelys... |
| Authors: | Conor McCarthy |
| Algorithms: | LZ+HUF,BWT+MTF+HUF |
| Notable peformances: | Image1 |
IMP archives have three advanced features:the program website 2009, March 29.
- Two new high-performance compression algorithms: a general-purpose algorithm for normal use, and a special text compression algorithm for high compression of text documents.
- Most archivers compress files individually, but WinImp can compress multiple files together as a unit for higher compression. Unlike some archivers which compress the entire archive as one unit, WinImp can use several units for large archives, so you don't have to extract the entire archive to get the last file.
- Complete repair of slightly damaged archives using optional error-recovery data added to the archive.
The compressor is featured in the BWT comparison.
(Have info that should be added here? E-mail.)
Medical2 test decompression '-s4e -m3 -mm' fails: 'Error #16: Cannot read swap file'
| Ver | Rating | CPR | DPR | S.E. | R.E. | Ratio | C. kB/s | D. kB/s | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| <none> | ||||||||||||
| 1.12 | 33 | 34 | 24 | 128 | 3 | 3.018 | 7912 | 65292 | ||||
| -2 | ||||||||||||
| 1.12 | 24 | 25 | 16 | 84 | 2 | 3.054 | 5032 | 39175 | ||||
| -m1 | ||||||||||||
| 1.12 | 20 | 24 | 7 | 175 | 0 | 2.760 | 17439 | 60274 | ||||
| -m3 | ||||||||||||
| 1.12 | 23 | 23 | 27 | 78 | 2 | 3.062 | 4407 | 62129 | ||||
| -m3 -mm | ||||||||||||
| 1.12 | 33 | 32 | 41 | 82 | 5 | 3.182 | 4013 | 60667 | ||||