Support ZIP in BZip2 and PPMd
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BZIP2 compression method is part of the PKZIP standard, you can find it on http://www.pkware.com. There are some more archivers on the market with BZ2 support for ZIP files.
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BZIP2 compression method is part of the PKZIP standard, you can find it on http://www.pkware.com. There are some more archivers on the market with BZ2 support for ZIP files.
it makes no difference that Pkware created this standard 2-3 years ago, it is still very much wrong.
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Yes. But just like Deflate64 it would eventually be implemented everywhere (at least extraction). Therefore, PA should support it, or maybe not in a near future.
Just like Winzxx 8.1 could extract Deflate64 ZIP, Winzxx 9.0 could extract BZip2-powered ZIP file.
Sorry, but I think you are missing the point.
When Deflate64 was introduced, the availability of internet/download sites was not the same as now.
Since then “zip” format has become a “de-facto” standard. Every compression utility supports zip files - even Windows XP. WinZip was also the ‘control/standard’.
If a zip file could be created/read by WinZip then it was utility ‘XXX’ that was broken.The whole/only advantage of Zip compression was this compatibilty. Lose that and Zip compression is just a joke. To suddenly create ‘different’ zip formats makes zip worthless.
There is no longer a reason to prefer zip over Rar, Ace, Sqx etc (pick anything you like). -
Thanks for pointing out the missing point. Anyway, you think BZip2 and PPMd shouldn’t be supported in PA? (both Create and Extract)
If not supporting Creation, I think at least Extraction is needed. (Yet enhanced the compatibility of PA to ZIP files too)
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it makes no difference that Pkware created this standard 2-3 years ago, it is still very much wrong.
Deflate64 is more jokingly. Just very very slight enhancement made to the compression ratio but completely ruined the compatibility.
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Thanks for pointing out the missing point. Anyway, you think BZip2 and PPMd shouldn’t be supported in PA? (both Create and Extract)
If not supporting Creation, I think at least Extraction is needed. (Yet enhanced the compatibility of PA to ZIP files too)
PA does support Bzip2 and PPMD.
Bzip2 in Bz2 files.
PPMD in 7z files.
@Ricco:Deflate64 is more jokingly. Just very very slight enhancement made to the compression ratio but completely ruined the compatibility.
Yes, but that is not a justification for ruining compatibility yet again.
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PA does support Bzip2 and PPMD.
Bzip2 in Bz2 files.
PPMD in 7z files.I mean in ZIP profile… not in BZip2 and 7-Zip.
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it makes no difference that Pkware created this standard 2-3 years ago, it is still very much wrong.
PKWARE is the owner of the format. In the past you were proud of being one of the first supporter for ZIP64. Same for AES. It is still wrong too? So why not walk at the front and support BZ2 compression?
I think the point is, that you are depending on what Innermedia is doing. If Innermedia decides to support the new compression formats, you can support it too. If not…
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I mean in ZIP profile… not in BZip2 and 7-Zip.
I know - sorry I forgot to include a smiley.
PKWARE is the owner of the format.
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BZIP2 compression method is part of the PKZIP standard, you can find it on http://www.pkware.com.I am not sure - was the ZIP format ever extended again to include PPMD as well?
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I am not sure - was the ZIP format ever extended again to include PPMD as well?
Winzip Computing extended the format again, probably without permission from PKWARE. I’m curious how the story continues.
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Winzip Computing extended the format again, probably without permission from PKWARE. I’m curious how the story continues.
Agree. This is the first time I found Winzip Computing supports something beyond the PKWARE ZIP format…
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I have checked the formats of win***'s znew zip formats and they all open in pa with no problem you can even extract them to any directory you want. ppmd zip verion just beat powerarchive to the crunch on zips but everything else failed to beat pa they matched it.
adding ppmd would be good but the rest a fast we have it already.
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i support this wish.
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was the ZIP format ever extended again to include PPMD as well?
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NoBzip2 is bad
PPMD is worseBasically, if I receive a Zip file, I no longer “know” what format it is.
Might as well give every archive file the extension “bin” and let each utility/anti-virus decode contents as appropriate. -
for me at least, PA cannot extract files from these new zip created by winzip 10. does the latest PA 9.5 beta 5 fix this? or is it planned?
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Since the average user will just download a file without much knowledge of the different compression algorithms, they will see a .zip file and simply want to decompress it. It would be foolish not to include PPMd and BZip2 in the ZIP format because the average user will fault PowerArchiver for not decompressing their ZIP file regardless of how it was compressed. It only seems logical to include these formats so as not to alienate users from PA.
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Since the average user will just download a file without much knowledge of the different compression algorithms, they will see a .zip file and simply want to decompress it. It would be foolish not to include PPMd and BZip2 in the ZIP format because the average user will fault PowerArchiver for not decompressing their ZIP file regardless of how it was compressed. It only seems logical to include these formats so as not to alienate users from PA.
where does it end though? In reality, user will complain to the sender and they will not create incompatible archive - this is why many people still dont use RAR, ACE or 7zip.
If we went with your suggestion, then anyone adding their own “zip” extension would create havoc because everyone else would “have” to support it.
This is killing ZIP format as we know it. Many people are using ZIP because they can be sure that anyone can open it - including hundreds of millions of Win ME, Win XP and Win2k OS’s which now can not open “zip”. And I can tell you from the source, that MS will not add support for WZ’s zip extension for a long time, if ever. This is probably what WZ is counting on to have better sales.
PkWare added bzip to the zip format 2-3 years ago, and almost nobody is using it because they are not sure if everyone can open that file.
What will happen is that this will force people to use newer compression utilities and this will make open formats as 7zip popular.
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If we went with your suggestion, then anyone adding their own “zip” extension would create havoc because everyone else would “have” to support it.
I wouldn’t go as far as that. Basically it comes down to PKWare and WinZip. Unfortunately, those are the dominant forces behind the zip format right now. Most users I’ve seen just use WinZip without much thought. If a user is able to decompress a file with WinZip or PKZip without problem and then tries PA and has a problem, which one are they more likely to stay with?
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I wouldn’t go as far as that. Basically it comes down to PKWare and WinZip. Unfortunately, those are the dominant forces behind the zip format right now. Most users I’ve seen just use WinZip without much thought. If a user is able to decompress a file with WinZip or PKZip without problem and then tries PA and has a problem, which one are they more likely to stay with?
but they wont be able to open PPMd files with PkWare :-).
I think major factor behind ZIP is also built in support in Windows, which will not work, which is why majority of users will not use these new extensions.Plus, since WZ will get much stricter licensing, and probably become true trial software, I doubt many people will use these new algorithms…
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Plus, since WZ will get much stricter licensing, and probably become true trial software, I doubt many people will use these new algorithms…
I’m not sure how strict the licensing is in the new WZ, but, if history is any indicator, people will just continue using unregistered versions and playing with different compression schemes.
