Compression decreases the size of data.

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31 views

What methods exist for increasing usable consumer ethernet bandwidth in OSI layers 1-4?

What compression methods are applicable to a typical 1Gbps ethernet link? (non-enterprise bias, hardware or software, layer 1-4) Or: "What solutions exist to improve typical 1GigE ethernet ...
6
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1answer
2k views

Hide NTFS compression blue double arrow icon overlay

Since the last Windows 10 update I have these blue double arrows on almost every item (all files & folders that are NTFS compressed). How can I remove these?
0
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0answers
40 views

Use avconv and image magick to convert video into reduced size gif

I'm using this answer to convert a video capture of a small section of my screen to a gif for a tutorial on a webapp. The problem is that the gif conversion increases the file size. avconv -i ...
0
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1answer
48 views

Booting from a compressed iso file

I'm trying to format my PC from USB, since booting from CD won't work. I'm trying to make a USB bootable .ISO file from a win7 CD. Now I've created a .iso file whose size turned out to be 4.29 GB. My ...
2
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1answer
322 views

Why do OSX apps increase so much in size on 'installation'?

I downloaded VLC 2.0 for Mac. It was a 42 mb (0.008MB) download! The corresponding Windows installer is only 21 mb, despite the extra code for the installer itself. But even worse, when I open the ...
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3answers
3k views

Is there an rsync alternative, that stores compressed and encrypted?

I'm looking for a suitable off-site backup / file synchronization solution. Both local client and remote server run linux. Storage space on the server is limited, bandwidth between client and server ...
0
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0answers
23 views

create AVC_Intra from uncompressed in best quality

I have some 720p uncompressed YUV video and I need to transcode this video into an AVC-Intra using the best possible quality. The best possible Quality is needed, because the video probably will be ...
16
votes
4answers
20k views

How to do “Files to store without compression” in 7-zip?

Is there any way to selectively prevent certain file types from compression in 7-zip, like in WinRAR? I'm trying to compress a huge folder (many gigabytes), and I don't want the already-compressed ...
-1
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1answer
22 views

Mac - Alias linking breaks after unzipping the folder

I am new to Mac. I am trying to zip a folder in which there are two sub folders say folder A and folder B. I create an Alias of a file in folder B and move the Alias to folder A. After I create a ...
2
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2answers
1k views

Need to read a Windows 98 DRVSPACE.000 file in Windows 7

Today I came across a DRVSPACE.000 file in my archives and I want to recover its contents. Beside the file is a READTHIS.TXT which reads: This disk was compressed using DriveSpace 3, which requires ...
3
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1answer
64 views

Remove any file that is not a folder

I have a complex directory in my work and another person needs it's structure. Having so many directories, instead of manually documenting, he insisted just duplicate that folder, then remove all the ...
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0answers
24 views

windows curl --compressed : unrecognized command

I found the SAME problem: (si I know it can be duplicated) Curl Compressed Command not Recognized in Windows However no one of these solutions works for me (win7 / 64bits) When I use without the ...
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0answers
17 views

Perform a compressed backup of encrypted devices?

I'm looking for software that would do something like this for me: Read disk's partition table, find LUKS-encrypted partitions, Decrypt the partitions, fill the empty space with zeros, Back up the ...
1
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5answers
21k views

How to compress a JPG image File

I am trying to send an email with an image attachment. But the image size is 40MB and the attachment size can only be 25MB. How can I compress the size of the image so that I can send it via Email?. I ...
0
votes
1answer
187 views

How to recover files from the compressed NTFS partition?

One of the NTFS partitions was compressed with the tool implemented in Windows 7, available in the partition properties window. Later, one of the folders has disappeared. I was trying to use Piriform ...
12
votes
3answers
945 views

Compressing many similar big files

I have hundreds of similar big files (30 megabyte each) which I want to compress. Every pair of files have 99% of same data (less then 1% difference), so I expect to have not more than 40-50 megabyte ...
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1answer
33 views

How do I email folders containing multiple documents?

I have a folder with 6 documents in it. If I try to email the folder, my emailer will not accept it. How do I work around this?
-1
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1answer
49 views

Photoshop saves images larger than they were before

For some weeks I am wondering why jpg files I save with Photoshop are extremly big like a 300 x 300 image is around 600 KB even when I reduce its quality all the way down to 0. Its all in RGB 8 Bit so ...
0
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1answer
209 views

compress file using command line windows

I am looking for a command line command to comress a file. I want to compress each file individually to filename.zip. all the methods that I found including: ...
19
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3answers
67k views

What are the best options to use when compressing files using 7 Zip?

I often have to gather log files and upload them to a central server (Owned by another company). The central server has a size limit of the file, so I am trying to create the smallest file possible ...
13
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4answers
46k views

What settings to use when making 7zip files in order to get maximum compression when compressing PDFs?

What settings to use when making 7zip files in order to get maximum compression? I'm compressing PDF documents containing scanned images. I'm thinking about using LZMA2, but I don't know what to set ...
0
votes
1answer
55 views

7zip tries to compress files and folder outside of the path

I use the command line of 7zip, 7za, to compress a folder, on Windows web server 2008 R2. 7za.exe a -tzip -r %nome_file% "C:\inetpub" I expect it to compress everything inside the folder "inetpub, ...
12
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9answers
36k views

Highest compression for files(for web transfer)?

I have seen some highly compressed files around, such as 700MB of data compressed to around 30-50MB. But how do you get such compressed files? I have tried using software like WinRAR and 7Zip but ...
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0answers
181 views

Does any linux disk format support transparent folder compression? (Like NTFS)

I feel like I could use transparent, seamless folder compression. One way to achieve this, I think, is to compress normally, and mount an archive with Nautillus. AFAIK. you can run programs from the ...
0
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1answer
656 views

Zip/unzip my directory on windows 7 cmd

I want to zip a directory containing many types of files and many sub-directories in it. I tried: compact /c file But I did not see anything. Next I found about zip/unzip command and tried: zip ...
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3answers
1k views

NTFS compressed folders: is it possible to tweak compression ratio?

As it seems, Windows compresses the NTFS compressed folders with the lowest compression ratio possible. While this maybe good for increasing speed and decreasing CPU load, for the files that are ...
0
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1answer
57 views

disable Compress old files checking in Disk Cleanup in Windows XP

On an OS drive with approx 168K files, 27K folders of approx 28GB, that include OS (Windows XP SP3), drivers and a bunch of large applications such as Visual Studio, MS Sql Server, MySql, Java, ...
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0answers
69 views

How to get uncompressed content when using recursive wget?

i am downloading many single pages with all static content (js, css, imgs...) via wget recursive. It showed up, that served content, which was compressed (gzip), is stored by wget in compressed form. ...
0
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1answer
72 views

NTFS File Compression Issue

I have several hundred photo files that were inadvertently moved from a Windows NTFS formatted, compressed external drive, to a second external drive that was formatted by Mac OS X. The move was ...
0
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1answer
62 views

Video compression size s and codecs from JPEG

I am building a data logger with 3 cameras which output as jpeg frames (o.79MB/jpeg @24bit/pixel) at 24 frames per second. I want to take these images and convert it to a video. Each For the video I ...
2
votes
3answers
567 views

Deduplicate Files inside multiple .tar.gz archives

I take a nightly backup from my Webhosting service as .tar.gz. The Data changed is very little each night (<10MB). I would like to archive these files and deduplicate (solid compression) files ...
0
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1answer
211 views

how to set automatic NTFS LZX compression on new files

I know it is possible to compress files on the commandline with LZX: COMPACT /C /S:E:\Backup /EXE:LZX But i would like to do that BEFORE the files gets written on the disk. If i enable compression ...
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0answers
10 views

pak.ngc files? How to axxess

Used the filesystem on Wiiscrubber to pull out the whole file partition which contained many model files but they are embedded within a file type that hasn't been widely asked about at all. All I am ...
2
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1answer
21 views

Does any version of Windows support uncompressing splitted archives natively?

I mean, are multi-volume .zip archives, or maybe any other kind of archive format, natively supported without any third-party application like 7Zip or WinRAR?
0
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1answer
448 views

How to compress an .avi video to 10% of its original size using ffmpeg?

I have a video file that is 15 seconds in length and 465,195 KB. I would like to reduce it to somewhere around 46,000 KB. Is there an easy way to do this. I have tried the largest allowed bitrate ...
1
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0answers
39 views

Why is zip default compression on Mac [closed]

Mac is based on Linux so why would it use zip as default compression, if zip stores MSDOS file attributes. Which is more efficient - tar or zip compression? What is the difference between tar and ...
0
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1answer
43 views

using compressed (.gz) files with command line scripts expecting uncompressed files

In order to save disk space, I've gunzip-ed a lot of my files that I regularly use. What is a best-practice way to still use the .gz version of these text files with, say, python scripts? More ...
2
votes
3answers
1k views

Multithreaded TIFF to PNG conversion

I'm working with images of scanned books, so hundreds of high resolution pictures. I'm doing conversion work with Photoshop Elements - I can quickly save them to uncompressed TIFF, but converting to ...
0
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1answer
27 views

An archiving strategy that will allow me to view file contents without uncompressing to disk

I am running in Unix. I have a folder, which has a set of folders and text files under it. I wish to archive this into a single compressed file. However, through standard Unix commands, I'd like to ...
0
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1answer
488 views

Recursively compress files in a directory and subdirectories using command line “zip” tool in Mac OS X and exclude .DS_Store files from ALL subfolders

I'm trying to create a ZIP file using the command line zip tool that comes with the Mac OS X Terminal. I want to recursively compress the contents of the current folder but excluding .DS_Store files. ...
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1answer
98 views

How do you know the size of a 7zip compressed file?

With an archive file, I can only ever find the size of the file before compression, its original size, which I know. What about the size of the new, smaller compressed size?
2
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0answers
43 views

Zipping a text file with sha256 hashes seems too efficient

I have an ASCII-encoded text file where each line has the following structure: XYplorer nn.nn.nnnn [yyyy-mm-dd hh.mm.ss] [S256 S256].zip ↑↑ ↑↑ ↑↑↑↑ ↑↑↑↑ ↑↑ ↑↑ ↑↑ ↑↑ ↑↑ ↑64× ↑64× so a ...
0
votes
1answer
130 views

“recompress” a 7z archive inline

I have a rather large (~500GB) 7-zip archive. I originally made it when I had more space available, and did so at rather fast, low-compression settings. Now things are tight, and I'd like to try and ...
2
votes
1answer
942 views

What's the quickest way to a minify a SQL file from the command line?

I want to run a single batch command that must take mySQLfile.sql and compress it by minifying it. Any suggestions on how to get mysqldump to produce the most compressed SQL file? It would be cool if ...
2
votes
1answer
111 views

NTFS compression ate all disk space with no possibility to recover

To increase available space on a HDD (Windows Server 2012 Standard x64), I tried to enable NTFS compression on that drive. While doing the compression, it ran out of available space (despite having ...
0
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1answer
52 views

How to search for a file that is compressed on a external drive from my mac?

My hard drive was from my Mac. I replaced it with a new hard drive. I was able to dump all the data from the damaged drive onto an external drive. The dump separated some of the files into Word docs, ...
0
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1answer
41 views

GPG with tar.gz at the same time without the full path being packed

I would like to compress and encrypt a folder: tar -cz "/path/to/the/folder/" | gpg --encrypt --passphrase "password" --recipient "mail@mail.mail" > "/destination/package.tar.gz.gpg" When I ...
6
votes
4answers
15k views

How to compress a file in UNIX?

I want to do an ordinary "zip", so my CW3 file becomes CW3.zip. I have tried to use some example commands found on the internet but they don't seem to work. I have tried the following, resulting in ...
1
vote
1answer
748 views

FFMPEG / libx264: How to specify a variable frame rate but with a maximum?

Instead of providing a fixed frame rate to FFMPEG/libx264 (-r/-framerate), I would like to specify a variable frame rate with a MAXIMUM value, and allow libx264 to down the frame rate as it sees fit. ...
10
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2answers
24k views

What is the difference between rar and RAR5 compression?

What is the difference between rar and RAR5 compression ? Which is better for which purpose vs the compression time.