jimmy_cy Posted July 22, 2013 Share Posted July 22, 2013 Hello , i would like to hear your opinions about that new algorithmIs it really working for you?, do you see a lot of smaller archives?My opinion is that it sounds cool , i have previous installed one beta build but i didn't know what was that dictionary size so i immediately uninstalled it and re-installed the older stable one. So what are your thoughts? Link to comment Share on other sites More sharing options...
TheAslan Posted July 22, 2013 Share Posted July 22, 2013 avast! Premier Antivirus: 140 MB (147,536,136 bytes)RAR - Best - Solid Archive: 140 MB (147,735,863 bytes)RAR5 - Best - Solid Archive: 140 MB (147,641,202 bytes)ZIP - Best - No Available: 140 MB (147,420,464 bytes)Final thoughts:I'm not sure what I'm doing wrong but uncompressed size looks smaller than compressed.... Link to comment Share on other sites More sharing options...
digimon Posted July 23, 2013 Share Posted July 23, 2013 avast! Premier Antivirus: 140 MB (147,536,136 bytes)RAR - Best - Solid Archive: 140 MB (147,735,863 bytes)RAR5 - Best - Solid Archive: 140 MB (147,641,202 bytes)ZIP - Best - No Available: 140 MB (147,420,464 bytes)Final thoughts:I'm not sure what I'm doing wrong but uncompressed size looks smaller than compressed....the problem is your taking a program thats already been compressed and recompressing it which for the most part just ads overhead to the file Link to comment Share on other sites More sharing options...
phâm Posted July 23, 2013 Share Posted July 23, 2013 avast! Premier Antivirus: 140 MB (147,536,136 bytes)RAR - Best - Solid Archive: 140 MB (147,735,863 bytes)RAR5 - Best - Solid Archive: 140 MB (147,641,202 bytes)ZIP - Best - No Available: 140 MB (147,420,464 bytes)Final thoughts:I'm not sure what I'm doing wrong but uncompressed size looks smaller than compressed....the problem is your taking a program thats already been compressed and recompressing it which for the most part just ads overhead to the filethat program has been compressed but we can see rar5 is better than rar algorithm :) Link to comment Share on other sites More sharing options...
Administrator DKT27 Posted July 23, 2013 Administrator Share Posted July 23, 2013 The positives don't overweight the lack of compatibility with previous WinRAR versions.Tried it on HitmanPro installer, which I think is uncompressed.HitmanPro_x64.exe: 9,603 KB.HitmanPro_x64 RAR.rar: 5,345 KB.HitmanPro_x64 RAR5.rar: 5,338 KB.HitmanPro_x64.zip: 6,078 KB.HitmanPro_x64.7z: 5,229 KB. Link to comment Share on other sites More sharing options...
rudrax Posted July 23, 2013 Share Posted July 23, 2013 .7z is the best :thumbsup:I'm not sure what I'm doing wrong but uncompressed size looks smaller than compressed....:lmao: Link to comment Share on other sites More sharing options...
Administrator DKT27 Posted July 23, 2013 Administrator Share Posted July 23, 2013 .7z is the best :thumbsup:Exactly. 9 out of 10 times, it will beat RAR in compression. Still, people (and the scene) keep using RAR. Link to comment Share on other sites More sharing options...
rudrax Posted July 23, 2013 Share Posted July 23, 2013 .7z is the best :thumbsup:Exactly. 9 out of 10 times, it will beat RAR in compression. Still, people (and the scene) keep using RAR.RAR is more secure, I guess. Link to comment Share on other sites More sharing options...
rach Posted July 23, 2013 Share Posted July 23, 2013 even if it is better, I will keep using .rar because it is more compatible with other archiver. Link to comment Share on other sites More sharing options...
Arion Posted July 23, 2013 Share Posted July 23, 2013 Here is my result :o copy (cloud strage app installer)Winrar5beta7 7zip22beta:EDIT: Finally 7zip was won. Thank you DKT27. Link to comment Share on other sites More sharing options...
Administrator DKT27 Posted July 23, 2013 Administrator Share Posted July 23, 2013 Here is my result :o copy (cloud strage app installer)Winrar5beta7 7zip22betaSet 7-Zip at Ultra, LZMA2 and non-solid.Copy-1.33.0486.exe: 46,715 KB.Copy-1.33.0486 RAR.rar: 44,310 KB.Copy-1.33.0486 RAR5.rar: 43,412 KB.Copy-1.33.0486.7z: 43,224 KB. Link to comment Share on other sites More sharing options...
shroeder Posted July 23, 2013 Share Posted July 23, 2013 I think, when comparing compression ratio, we should use a well-known standardized carefully chosen set of data, like for example the Silesia Corpus (http://sun.aei.polsl.pl/~sdeor/index.php?page=silesia). This reduce bias.One of course can argue that one or another program is specifically tailored to achieve high ratio on this particular set of data.Slightly off-topic, LZ4 compression is gaining momentum these days, in nearly realtime situations (filesystems, boot rom decompression ect) Link to comment Share on other sites More sharing options...
x3r0 Posted July 23, 2013 Share Posted July 23, 2013 Indeed, I love WinRAR because it offers recovery record, native archives split, and speed with its result are balanced, 7z surely compacts more, but it's too slow :( Link to comment Share on other sites More sharing options...
Administrator DKT27 Posted July 23, 2013 Administrator Share Posted July 23, 2013 @shroeder: 7-Zip gives me better compression 9 out of 10 times.@x3r0: Until recently, 7-Zip always used to beat WinRAR in compression speed on my system. Infact, multicore support on WinRAR was added only not so long ago. Link to comment Share on other sites More sharing options...
R3C0N Posted July 23, 2013 Share Posted July 23, 2013 most installers, stetups are already compressed very high using 7zip algo (inno, nsis). If u compress the setups again it will not bring any gain in compression as the installation executable already is. Thats why I posted most of the download links as exe without compressing them again. Link to comment Share on other sites More sharing options...
TheAslan Posted July 23, 2013 Share Posted July 23, 2013 I also tried to compress .m4a (alac) music files (350MB in total), tried all those compress methods but still it showed 350MB, only few bytes was compressed.This is very odd. Link to comment Share on other sites More sharing options...
rudrax Posted July 23, 2013 Share Posted July 23, 2013 I also tried to compress .m4a (alac) music files (350MB in total), tried all those compress methods but still it showed 350MB, only few bytes was compressed.This is very odd.It is no use compressing media files. Link to comment Share on other sites More sharing options...
SnakeMasteR Posted July 23, 2013 Share Posted July 23, 2013 I also tried to compress .m4a (alac) music files (350MB in total), tried all those compress methods but still it showed 350MB, only few bytes was compressed.This is very odd.It's like compressing MP3's or AVI's, you will rarely have any gain from already compressed files in containers and most of the time, the compressed archive will be bigger than the compressed file in it. :lol: Link to comment Share on other sites More sharing options...
ASIO Posted July 23, 2013 Share Posted July 23, 2013 The positives don't overweight the lack of compatibility with previous WinRAR versions.Tried it on HitmanPro installer, which I think is uncompressed.HitmanPro_x64.exe: 9,603 KB.HitmanPro_x64 RAR.rar: 5,345 KB.HitmanPro_x64 RAR5.rar: 5,338 KB.HitmanPro_x64.zip: 6,078 KB.HitmanPro_x64.7z: 5,229 KB.ultimate winner 7zip :P Link to comment Share on other sites More sharing options...
xanax Posted July 23, 2013 Share Posted July 23, 2013 RAR5 use LZ777-Zip can use LZMALZMA is enhanced LZ77 with larger memory and arithmetic codingRAR use 128-bit AES encryptionRAR5 use 256-bit AES encryption7-Zip use 256-bit AES encryptionwith LZ77 algo we can get better compresion ratio for similar or same filesget some file and made copy, then compress both with old and with new rar and see differenceor download for example vlc player without installers and unpack, for example versions 2.07/2.06/2.05/2.04/2.03than compress all with different algo/formats Link to comment Share on other sites More sharing options...
Administrator DKT27 Posted July 24, 2013 Administrator Share Posted July 24, 2013 I also tried to compress .m4a (alac) music files (350MB in total), tried all those compress methods but still it showed 350MB, only few bytes was compressed.This is very odd.I think alac is already compressed (but without any quality loss). What you need to compress is not alac or flac, but wav files. Alac and Flac files are like compressed form of wav files. Link to comment Share on other sites More sharing options...
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