Ticket Options
Question Profile
| DATE | Sep 17, 2006 |
| TICKET | #28324 |
| STATUS | Closed |
| SUBJECT | application volume on mac 10.3.9 |
| CAT | Computers, Operating Systems, Applications or Connected Devices |
| TYPE | Operating System Features, Bugs and Problems |
| DESC | Apple |
| DESC | 10.3.X (Panther) |
| PLATFORM | |
| MODEL | |
| PROC | |
| RAM | |
| DRIVE | |
| NAME | mark |
| USERNAME | greatday101 |
| TECHNICAL | Beginner |
| ISSUE | Just Started Looking |
Question Details
TICKET ARCHIVE -> application volume on mac 10.3.9
greatday101 - Sep 17, 2006 - 5:11 pm
i am running mac 10.3.9. my question is...how come when i see the volume on some software, it is so much bigger by the time i copy it to my hard drive?
EXAMPLE: the other day i downloaded the firefox browser which said it was around 16.1 mb. after downloading it, i dragged the ff icon to my hard drive, it showed the volume as 48 mb.
EXAMPLE: the other day i downloaded the firefox browser which said it was around 16.1 mb. after downloading it, i dragged the ff icon to my hard drive, it showed the volume as 48 mb.
- Sep 18, 2006 - 4:58 am
Because when you download it you are downloading a compressed archive. Once expanded it is much larger. Also, Firefox is an universal binary (will run on both PowerPC and Intel Macs) so the program file is larger to accommodate code for both machines.
greatday101 - Sep 18, 2006 - 6:03 am
is this the same for ALL downloads? is there anything i can do about it? thank you!
philippe99 - Sep 18, 2006 - 8:02 am
Hi.
Yes, it will be the case in nearly all the times you download files ending with a suffix like .dmg, .zip, .sit, .sitx, .gz... which are all compressed archive.
A few rare sites will indicate the compressed size and the size of the application/folder after it will be uncompress.
There is no rule to that the "uncompress item wil be twice/thrird the size of the downloaded archive"; it depends on what the application whhich is compressed contains and the compression algorithm.
For instance, browsers applications contains many Java scripts, GIF icons/images and HTML pages as documentation, so these contents can be highly compressed.
Same for folders of JPEGs someone can zipped to send you.
In the mid-range, compressed Word .doc documents, .RTF files, .. undergo a minimum compression around 10 to 20 %
On the other end, video files (.avi,..) already have their content compressed due the video codec used for recording the movie, so they do not need to be included in an archive because compressing them will only result in a benefit of 3-5% of the size. That's why such video can be downloaded directly, without passing through a compress/uncompress stage.
Same for mp3s
In general, for an average downloaded zipped file, one can expect that the uncompressed archive will reach, at least, twice the size of the uncompressed one.
Regards
Philippe
Yes, it will be the case in nearly all the times you download files ending with a suffix like .dmg, .zip, .sit, .sitx, .gz... which are all compressed archive.
A few rare sites will indicate the compressed size and the size of the application/folder after it will be uncompress.
There is no rule to that the "uncompress item wil be twice/thrird the size of the downloaded archive"; it depends on what the application whhich is compressed contains and the compression algorithm.
For instance, browsers applications contains many Java scripts, GIF icons/images and HTML pages as documentation, so these contents can be highly compressed.
Same for folders of JPEGs someone can zipped to send you.
In the mid-range, compressed Word .doc documents, .RTF files, .. undergo a minimum compression around 10 to 20 %
On the other end, video files (.avi,..) already have their content compressed due the video codec used for recording the movie, so they do not need to be included in an archive because compressing them will only result in a benefit of 3-5% of the size. That's why such video can be downloaded directly, without passing through a compress/uncompress stage.
Same for mp3s
In general, for an average downloaded zipped file, one can expect that the uncompressed archive will reach, at least, twice the size of the uncompressed one.
Regards
Philippe
IF THIS IS YOUR QUESTION AND YOU WISH TO RESPOND, LOGIN HERE FIRST.
