> "Martin v. Löwis" <[EMAIL PROTECTED]> (MvL) wrote:
>MvL> Jordan schrieb:
>>> Not really on topic anymore but what's the method for tar.gz?
>MvL> It works like .tar.bz2, except that it uses gzip (www.gzip.org)
>MvL> as the compression library. The underlying compression algorithm
>MvL> is L
Martin v. Löwis wrote:
> Well, .jpg files are already compressed in a lossy way (.jpg is
> inherently lossy); to compress it further, you need to increase
> the loss.
or use a better algorithm, such as JPEG 2000 or Microsoft's HD Photo,
which both give better visual quality at lower bit rates (w
Martin v. Löwis wrote:
> Well, .jpg files are already compressed in a lossy way (.jpg is
> inherently lossy); to compress it further, you need to increase
> the loss. PNG is also compressed already, see
Not really. Stuffit has a JPEG compressor which takes advantage of the
fact that the JPEG algor
Jordan wrote:
> So that would explain why a tar.bz2 archive can't be appended to
> wouldn't it... And also explain why winrar was so slow to open it (not
> something I mentioned before, but definitely noticed). I had wondered
> what it was that made bz2 so much better at compression than zip and
Jordan schrieb:
> Not really on topic anymore but what's the method for tar.gz?
It works like .tar.bz2, except that it uses gzip (www.gzip.org)
as the compression library. The underlying compression algorithm
is LZW.
> And
> even more off the topic, does anyone know a good lossless compression
>
As far as I know, tar.gz and tar.bz2 files work in exactly the same way, but
use different algorithms. That is to say, all the files are 'tarballed'
together, then the resulting very long string is run through the gz bz2
algorithm and out pops the compressed file. (These compression algorithms
wor
So that would explain why a tar.bz2 archive can't be appended to
wouldn't it... And also explain why winrar was so slow to open it (not
something I mentioned before, but definitely noticed). I had wondered
what it was that made bz2 so much better at compression than zip and
rar. Not really on to
Jordan wrote:
> When using python to create a tar.bz2 archive, and then using
> winrar to open the archive, it can't tell what the compressed
> size of each
> individual file in the archive is. Is this an issue with
> winrar or is there something that needs to be set when making
> the archive tha
Jordan schrieb:
> When using python to create a tar.bz2 archive, and then using winrar to
> open the archive, it can't tell what the compressed size of each
> individual file in the archive is. Is this an issue with winrar or is
> there something that needs to be set when making the archive that i
When using python to create a tar.bz2 archive, and then using winrar to
open the archive, it can't tell what the compressed size of each
individual file in the archive is. Is this an issue with winrar or is
there something that needs to be set when making the archive that isn't
there by default.
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