Compression makes files smaller in size.

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0
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2answers
24 views

Do more compressed PNG images take longer to load?

When I create PNG files with very small disk size, I tend to wonder if the file size becomes less important than the time viewers would need to decompress the image. Technically that would be trivial ...
0
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0answers
4 views

Change the default image compression in Photoshop Elements 11

I have a lot (200+) of jPegs that I need to crop and then save. I'm using Elements, so recording an Action is out. The approach I'm using is to edit a bunch of images, then Close All and use the ...
0
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1answer
26 views

Converting a scanned pdf to a compressed PDF with binary (2 level) image

I have many old scanned PDFs which take up too much space on disk. I have tried many PDF compressors available on the web. All of them ask me what compression to use for color images, and what to ...
-3
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0answers
33 views

How to copy a DVD to a smaller-sized one?

I'm trying to copy a film from its original disc to a blank DVD I bought. However, the .cdr image I created with Disk Utility is 7,52 GB large, whereas my DVD is only 4,7 GB. The question is, how do I ...
-1
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2answers
34 views

Check if a compressed file is password protected before downloading

Everything is in the title: I'm aiming to download a big file, and I don't want to waste time downloading it because I don't know if it's password protected or not, especially with my slow internet ...
0
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0answers
25 views

Apply binary patch to linux kernel image

I have a kernel image. The sources are somewhat lost and I dont want to migrate to a recent version (embeded software, custom (patched) linux kernel 2.4.24). I want to make a simple operation: ...
0
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2answers
55 views

How can I search for files that are either compressed or uncompressed in Windows Explorer?

I know that Windows explorer can colorize the NTFS compression state of a file, in both the regular and search views. How can I specifically filter/search for files that are compressed or ...
0
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0answers
15 views

How to compress subfolders and subfiles, in case when parent folders are already compressed?

Windows allows to comress folders. When setting some folder to comressed, there is an option to compress subfolders and files. Unfortunately, the process can take a lot of time and can either skip ...
10
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2answers
331 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 ...
2
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2answers
50 views

How to extract tar file on Windows, when the filenames include a colon?

I have a tar(.gz) file created on a Linux system, and the filenames contain colon characters. The tar utilities I can find on Windows don't extract these files at all. How can I do this, ideally ...
0
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1answer
24 views

Is possible to compress ALL the web browsing using a ssh tunnel or similar?

I have a machine with a fast connection to internet in point A (Let's say 10MB). In point B I have a machine with slow internet (let's say 1/2 MB). Is possible to use a ssh tunnel that run in point ...
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0answers
12 views

Dolby Digital Live vs DTS Connect Analysis

Has anyone perfomed a proper analysis of these two? As in compressed a lossless source with each, decoded it and compared the output bit for bit to the original? I'm unable to make out any difference ...
0
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1answer
26 views

How do I test if my SSD uses compression?

I am thinking of running the filesystem with btrfs on my SSD. This might make the disk last longer or run faster, because if we compress the filesystem there is less to write. (I understand this is ...
1
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1answer
39 views

How to keep EXIF data in a DSLR video after editing / compressing with Photoshop CC?

So I have a bunch of home video files with my kids and family. I want to do some edits like text overlay, music backgrounds etc and also compress them using Photoshop CC. However, after compressing or ...
1
vote
0answers
66 views

Why does FFmpeg append blank black video to the end of my MP4 files when compressed from MOV?

I have several large MOV files that I want to compress to MP4. Unfortunately, when I use FFmpeg, it appends lots of black (blank) video at the end. (The destination file is longer than the source ...
0
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1answer
39 views

Windows : Compress the drive/file/folder to save disk space

This option is available for both my primary as well as external hard disk. I was wondering about the pros and cons of this feature. I found some at ...
0
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0answers
23 views

ASUS RT-N65U router displays ridiculously fast internet speeds

My router's logging some ridiculous internet speeds. For example, here's a screenshot showing a max internet of speed 16.7 Gbps, and an average speed of 111 Mbps. I did complete a large download ...
0
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0answers
25 views

Error uncompressing file when piping curl to gunzip

I need to download a gzipped xml feed to parse in my Ruby app. It may well be quite large, 30Mb compressed, 300Mb uncompressed. So I do this: curl -s http://example.com/file.xml.gz | gunzip and read ...
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0answers
16 views

While compressing the folder many other zip files creating during the process

I seen a strange thing never seen before while compressing the folder into the zip. When I start zipping my folder there are many zip files showing automatically during the process. Like say the ...
1
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3answers
58 views

Does 7zip compression level affect decompression speed?

I have a directory that I would like to password protect and encrypt. I am using PeaZip to do this using 7zip compression. I'd like to use the 7z like a directory and hard drive space is not a ...
0
votes
1answer
29 views

Push format of image while paste from clipboard

Problem: email client (theBat!) is using jpg for all images from clipboard. I need to use png or gif instead. For now I can only save image to disk in needed format and insert through menu - very ...
0
votes
2answers
35 views

Where do I find the “send to” Compressed (Zipped) folder

I am trying to compress a Zip archive to an external hard drive on my PC. Space is limited on the system so I can't compress it locally. I have access to WinZip but can't download or install any ...
0
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1answer
13 views

How to use pv to see decompression progress?

I've seen: How to use Pipe Viewer (pv) for measuring compression progress? Is there a way to do the same thing for decompressing a gzipped file?
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0answers
43 views

Achieve mp4(x264) compression of Debut Video Capture in Sony Vegas

I am using Debut Video Capture software to record my screen (948x534px in mp4 h264 encoder with Ratefactor of 28) and afterwards I edit those clips and render then in Sony Vegas. My problem is that ...
0
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1answer
44 views

Will audio bitrate get increasingly higher in the future? [closed]

In computers, storage, CPU processing power and video bitrates are getting higher and higher each year, but would an increase in audio bitrate do any good? Increasing a video's bitrate can increase ...
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0answers
58 views

Re-zip archives with the compression level “No Compression”

I am running Windows 8.1 Enterprise x64. I have a folder containing hundreds of ZIP archives (aka Compressed folders). I need the fastest way to convert them (preferably, in-place) to vaild ZIP ...
1
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1answer
32 views

Windows 8 - Compress Drive did not continue after cancel/reboot

I checked the "Compress Drive" option on an external drive (1TB) on Windows 8. After clicking OK, the OS started to compress the files folder by folder on the drive. As it took too long, I shutdown ...
4
votes
2answers
55 views

How can I specify the order files should be compressed in 7zip?

I have a set of files I would like to compress that I know to be repetitive and compressible, but 7zip chooses a non-optimal order to compress the files and fails to take advantage of their ...
0
votes
1answer
130 views

How to extract multipart rar with missing parts?

I have a multipart .rar archive containing a single .tar.gz file inside it (don't ask why, that is just how it was made). I am missing a few of the parts, but do have the first part. I would like to ...
0
votes
1answer
36 views

Why does ColorSync compression increase PDF file size for me?

I have this ebook that I'm trying to send to my Kindle from my Mac. I've done this before; Get a pdf, send it to Kindle address, and make sure the subject is "convert". This causes Amazon to convert ...
0
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0answers
33 views

Compressing compressed .tar.gz files deterministically

I want to perform a series of recompressions of compressed files to study their properties. At first, I tried simply recompressing .zip files in a loop: for f in $(seq 1 100) do zip $f.zip -9 -v ...
0
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1answer
71 views

How to convert DV to robust compressed video file for editing later

I have 60Gb of DV footage that I need to store, but 60Gb is WAY too big. I need to transcode it to a lossy format, but I need the resulting video to be robust such that it can be easily edited with a ...
0
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2answers
26 views

What could have gone wrong when compressing a very big directory on OSX? The resulting zip won't decompress

When working with the edition of a movie, I was out of space on my HD so I temporarily compressed a very big directory to a zip file and removed the original as a way to get some extra space. I did it ...
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1answer
50 views

How to convert a file of format tar.gz to tar.bz2?

Like the title says, how do I do this conversion from the Linux console?
0
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1answer
689 views

How to get compressed memory back in OS X 10.9 Mavericks?

I followed the suggestion to disable compressed memory, now I want to get it back. I checked the code, it was 4 before disabling. So, I tried: sudo nvram boot-args="vm_compressor=4" That was not ...
0
votes
1answer
82 views

Force all files in a NTFS compressed folder to automatically compress [Windows]

Is it possible to keep all the files within a NTFS-compressed folder compressed? For example, if I have a compressed a folder using NTFS compression, it will compress all the files inside the folder ...
0
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2answers
46 views

How to Undo the “Remove Unnecessary Blank and EOL” in NotePad++

I am using Notepad++ for my coding , just used the their Edit > Remove Unnecessary Blank and EOL feature to remove the space and tabs and compressed the code , but how do i UnDo it ? is there ...
3
votes
3answers
443 views

Disable Windows 8.1 Component Store (WinSxS/DriverStore) automatic compression?

Windows 8.1 has a new Scheduled Task (Servicing\StartComponentCleanup) which will automatically delete or compress superseded and unused files from the Side by Side store, DriverStore and drivers ...
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0answers
88 views

compressing video with ffmpeg while maintaining high frame rate

Update: I watched the output video on a different machine and it was fine. The issue must've been with the program I was using to watch the video. Nevermind. I'm trying to compress videos taken with ...
0
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0answers
43 views

Unzip speed on Mac versus Linux

I have a zip file that contains 200mb of data, compressed to an 80mb .ZIP file. Basically it's a website with thousands of files, including code and images, no video. The file was zipped on a linux ...
0
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0answers
120 views

Stream videos from a server with “youtube-like” compression

I would like to host some videos on a site for a small audience (under 50 people), and don't want to use a site like YouTube or Vimeo, however I would like to have the same kind of load speeds for the ...
3
votes
1answer
164 views

Avoiding extreme fragmentation of compressed files on NTFS

Problem explanation I'm storing windows disk images created with wbadmin on NTFS drive, and I found compressing then with NTFS compression gives 1.5-2× space conservation, still giving full ...
1
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1answer
61 views

how to remove full path when doing tar.gz compression

I'm using this command to archive a directory named g from java code: tar czf /a/b/c.tar.gz /e/f/g When the tar file c.tar.gz is created, I find an entire path e/f/g then all files of the g folder ...
0
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0answers
18 views

Windows compressing big file automatically

I have a NTFS shared partition (for my Fedora and Windows 8 installations) and a big truecrypt container on it (not the whole partition). I have no problem mounting this container from Linux, but ...
7
votes
2answers
191 views

let tar auto detect compression type when extracting from stdin

I use GNU tar. It can auto detect compression type when compressing/decompressing files. But I need to decompress an archive from stdin and the compress type is unknown. I noticed that tar can give me ...
0
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0answers
33 views

How do I join, decrypt and uncompress my backups?

This is the line I used to back up some files for f in "*"; do tar -ch "$f" | pv | xz -9 -v |openssl des3 -salt -k “mypassword” | split -a 4 -b 200m – “/backups_${f%}.tar.xz_” ; done Now I am ...
0
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1answer
198 views

Does anyone know an effective method to ultra-compress files?

Does anyone know an effective method to ultra-compress files? You might have seen some PC games compressed to incredibly small sizes here and there (like GTA San Andreas which was compressed to 1mb ...
3
votes
1answer
65 views

Is there a way to compress files at different compression levels inside a single 7zip file? [duplicate]

Some files are compressed using their own compression scheme and some aren't. If I try Max compression on an already compressed file, I'll get 1%-2% better compression at most. The amount of time ...
5
votes
1answer
127 views

How to exclude a folder in 7zip?

I want to compress the folder C:\Temp but without a specific subfolder (e.g. C:\Temp\test). How can I do that with 7zip? I've come up with the following command: c:\Temp>7zip a -t7z test.7z ...
0
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0answers
75 views

New versions of srep failing my compression algorithm

I am currently using freearc, precomp042 and srep 3.2 (32bit) I am running on Windows 7 SP1 x64 with 8GB RAM I use 4 regular compressions styles as noted below depending on data type and have no ...