The compression tag has no wiki summary.
2
votes
3answers
92 views
Why are MP3 files not noticeably compressed by the compression tools within Lion?
I clicked the 'Compress xxx' option in the popup menu in order to compress a folder of MP3 files, but the result was a .zip file that is almost the same size as before compressing; it seemed to only ...
9
votes
2answers
235 views
why does OSX add extra '._<filename>' when I tar a directory?
I'd just like to know why if I "tar -czf" a file/directory, osx adds a: ._ for each file? I see these when I untar in linux. Or when I work with the uncompressed project in eclipse as it doesn't ...
1
vote
1answer
50 views
Is there a way for me to open a .xdi file?
I have on my computer a file that as been compress with the .xdi extension.
Is there a way for me on my Mac OS X to open it?
3
votes
1answer
101 views
Problem with corrupt .rar file
I have a big file compressed in split .rar archives. There are 68 archives named .rar, .r01, .r02, etc., annd the problem is that .r36 is corrupted resulting in an Unexpected end of archive. I've ...
2
votes
3answers
874 views
Create a zip file using an Automator Service
I am trying to create a service in Automator in Mac OS X Mountain Lion. The command that I want to use is as follows:
zip zip-file.zip "$@"
And here is a screen capture of what I did:
It works. ...
1
vote
1answer
266 views
Is Mac OS X's Compress a “standard” zip?
When I submit my research papers to an online review system, I prefer to upload all files (manuscript, figures, etc) by a single zip file, so that the review system can unzip the file. Otherwise, I ...
3
votes
1answer
333 views
Can I change compression settings on built-in archive utility?
I have a bunch of files I want to compress to stick in my dropbox account (as a single archive file.) When I select all the files in Finder and right click, I get the choice to "compress", which does ...
4
votes
1answer
180 views
iPhoto files compressed in Time Capsule. Where is the original size?
My 8 year old iMac died some days ago. Fortunately, I have everything backed up on my Time Capsule. I just tried to get my photos from iPhoto off it, but realized that all my shots have been ...
4
votes
2answers
364 views
Convert a number of zip file to rar?
Any suggestion of how to convert tens of zip files to rar format? App or command line tool are welcome.
2
votes
3answers
345 views
Can .zip folders created using Windows XP Pro be opened and extracted on Mac without any additional software?
I am a Windows user, and I would like to send a compressed archive/folder to my colleague who is a Mac user. I do not want him to have to download any additional software to open and extract it.
Can ...
1
vote
2answers
154 views
Is there a Mac utility to create an executable Zip/archive?
Is there a corresponding utility similar to the Windows Zip-to-Exe utility?
I would like to compress an archive with a flash presentation (containing a lot of files), and make it executable in Mac, ...
1
vote
1answer
183 views
Software to losslessly optimize batches of image files
I frequently work with large numbers of image files to be used in websites.
I'm currently using Photoshop's 'Save for Web' tool to find the most efficient way to compress images, but that takes some ...
7
votes
4answers
962 views
Creating an automated HFS+ compressed folder
I would like to set up an automated way for archiving files in OS X Lion. By archiving I mean using HFS+ compression feature on a specific folder, and make every file that I move into this folder ...
2
votes
2answers
2k views
How do I create a DMG file from a directory?
I'm trying to add a few files into a dmg. How do I create a DMG file from a directory?
2
votes
1answer
3k views
Does the iPhone compress emailed videos?
When you open a video in the Photos app and choose to send it via email, does the video get compressed, or is it sent using the same resolution it was shot in?
I'm mainly wondering about the iPhone ...
10
votes
4answers
887 views
Tools to compress and encrypt files
I want to compress several files and encrypt them with a password if possible.
Are there any build-in tools in Mac OS that provide such functionality?
If not, can you recommend me a (freeware) ...
0
votes
1answer
230 views
Compressing iTunes Library
Like most of you I have a very large iTunes Library with a lot of video content; I was wondering if it is possible to save the video content in compressed form(since space is always an issue) but ...
8
votes
3answers
2k views
Why are so many Mac downloads a .dmg just that contains a single .pkg?
I've noticed that many downloads are a dmg (disk image) that contains a single pkg file (installation package). Usually the pkg seems to be already compressed since the dmg doesn't reduce the file ...
