stupid_idiot
Group: Members
Posts: 344
Joined: Oct. 2006 |
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Posted: July 13 2007,11:22 |
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I refer to the wikipedia entry for AdvanceCOMP:
"DEFLATE specifies a stream-encoding such that any compliant decoder is able to parse any valid stream; the algorithm and program used for the compression stage are not mandated.
For generation of compressed sections of DEFLATE data, an encoder available in the zlib/gzip reference implementation has typically been utilised. The zlib/gzip compressor offers the user a sliding scale between CPU usage and the likely amount of reduction in size achieved on a range of -0 (no compression) to -9 (maximum gzip compression).
The 7-Zip DEFLATE encoder, used in the AdvanceCOMP suite, effectively extends the sliding scale further. A much more detailed search of compression possibilities is performed, at the expense of significant further processor time spent searching. Effectively, the 10-point scale used in gzip is extended to include extra settings above -9, the previous maximum search level. There will be no difference in decompression speed, regardless of the level of compressed size achieved or time taken to encode the data."
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