Questions tagged [conversion]

Conversion between file formats.

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83
votes
7answers
122k views

Creating a GIF animation from PNG files

Is there a tool to create a gif animation from a set of png files? I tried the convert command from the ImageMagick suite, but this doesn't always succeed. Also, I have several issues with this: I ...
79
votes
5answers
80k views

How to do I convert an animated gif to an mp4 or mv4 on the command line?

What command would I use to convert an mp4 or mv4 video file to an animated gif, and vice versa. That is, convert a animated gif to a mp4 or mv4.
67
votes
9answers
38k views

Split pages in pdf

I have a scanned pdf file which has scanned two pages on one virtual page (page in pdf file). The resolution is with good quality. The problem is I have to zoom when reading and drag from left to the ...
50
votes
13answers
109k views

Converting multiple image files from JPEG to PDF format

I want to convert some files from jpeg to pdf. I am using following command. $ convert image1.jpg image1.pdf But I have 100 images. How should I convert all of them to corresponding pdfs? I tried ...
50
votes
5answers
95k views

pdf to jpg without quality loss; gscan2pdf

When I convert a pdf file to bunch of jpg files using convert -quality 100 file.pdf page_%04d.jpg I have appreciable quality loss. However if I do the following, there is no (noticeable) quality ...
45
votes
8answers
103k views

How to convert TXT to PDF?

I want to convert .txt files to .pdf. I'm using this: ls | while read ONELINE; do convert -density 400 "$ONELINE" "$(echo "$ONELINE" | sed 's/.txt/.pdf/g')"; done But this produces one "error" -- ...
45
votes
8answers
62k views

convert images to pdf: How to make PDF Pages same size

I did something like convert -page A4 -compress A4 *.png CH00.pdf But the 1st page is much larger than the subsequent pages. This happens even though the image dimensions are similar. These images ...
40
votes
8answers
42k views

shell command to get pixel size of an image

Is there a shell command that returns the pixel size of an image? I'm trying to produce an animated gif starting from different gifs with different sizes using convert (e.g. convert -delay 50 1.gif 2....
40
votes
4answers
14k views

Convert OGV video to GIF animation?

I created OGV videos with the gtk-recordmydesktop screencasting program, trying to tackle this problem here with bruteforce over X. I can view the videos with VLC. Now, the task is to find some ways ...
31
votes
4answers
104k views

Convert a .xlsx (MS Excel) file to .csv on command line with semicolon separated fields

I realize that this is not an entirely unix/linux related question. But since this is something I'll do on linux, I hope someone has an answer. I have an online excel file (.xlsx) which gets updated ...
26
votes
4answers
55k views

Encode with ffmpeg using avi to mp4

What command lines to use to convert from avi to mp4, but without destroying the framesize and making the file small as the original size or a little bit bigger, and same thing with mp4 to avi? ...
22
votes
6answers
6k views

Convert between Unicode Normalization Forms on the unix command-line

In Unicode, some character combinations have more than one representation. For example, the character ä can be represented as "ä", that is the codepoint U+00E4 (two bytes c3 a4 in UTF-8 encoding), ...
18
votes
6answers
3k views

Is there a command-line tool for converting html files to pdf? [duplicate]

I would like to install a command line tool within a Docker image in order to quickly convert *html files into *pdf files. I am surprised there is not a Unix tool to do something like this.
16
votes
5answers
3k views

How can I convert Persian numerals in UTF-8 to European numerals in ASCII?

In Persian numerals, ۰۱۲۳۴۵۶۷۸۹ is equivalent to 0123456789 in European digits. How can I convert Persian number ( in UTF-8 ) to ASCII? For example, I want ۲۱ to become 21.
13
votes
4answers
13k views

How to batch convert bitmaps to SVGs?

I have many gray scale bitmaps that I need to convert to a vector format, such as SVG. I have been using Inkscape, which gives nice results, but this takes about 10-15 minutes to open, convert, and ...
12
votes
1answer
18k views

convert WAV music library to FLAC on command line and achieve best quality

I would like to produce (nearly) perfect FLAC files by verifying/checking all conversion steps. I'm hoping to do this in a single command, although a short bash script would be acceptable as a second ...
12
votes
2answers
7k views

Is there a linux equivalent of the Mac OS X command “textutil”?

On Mac OS X there's a very handy command called textutil, that can be invoked from the terminal and allows to convert a document from a format to another; Sometimes I use it to convert a RTF file into ...
12
votes
2answers
7k views

Why can I not split a .ape file?

I would like to split a .ape album into individual tracks in .flac format using a .cue sheet. For this I followed a tutorial I found. In short I pass this command to the terminal: cuebreakpoints ...
11
votes
4answers
28k views

How do I convert FLAC files to AAC (preferrably VBR 320k+)?

I back my CDs up to FLAC and then transcode to AAC (.m4a) files for portability on my android phone and the wife's iPhone. I had been using XLD on Mac and it does a great job but I'd rather not steal ...
11
votes
2answers
31k views

How get the best quality when converting from mp4 to avi with ffmpeg?

When I use this, the quality doesn't look bad. ffmpeg -same_quant -i video.mp4 video.avi In the ffmpeg documentation is written: "Note that this is NOT SAME QUALITY. Do not use this option unless ...
10
votes
4answers
13k views

How do I convert a '.pages' file to something unix-y?

I have a file with the extension '.pages´. I think that means iWork, but I'm not sure. Anyway, searching for "convert pages linux" produces a fair few false negatives! Does anyone happen to know a ...
10
votes
3answers
5k views

Markdown to PDF conversion in Pandoc: making pages landscape?

I am converting a document from Pandoc markdown to .pdf. I run the conversion like this, and everything works fine: pandoc test.MD -f markdown -o test.pdf However, I would like pandoc to output my ...
9
votes
4answers
3k views

Is there a good command line tool for converting to and from FLAC audio format?

Ideally, I want to convert from MP3 to FLAC and back. I also need to be able to script this.
9
votes
3answers
9k views

Convert FLAC files to OGG Vorbis

Are there any Linux tools for transcoding and syncing music directories? I encode my music to FLAC, which I keep on an external hard drive. Some time ago I transcoded this collection to OGG Vorbis, ...
9
votes
1answer
2k views

Save HTML from clipboard as markdown text

I want to be able to highlight a section of a web page and copy it to the clipboard then save it to my local disk as markdown. I need an efficient way to do that. My current cumbersome method is: ...
9
votes
1answer
8k views

Converting .docx files to plain text and preserving line breaks to maintain line number references to source document: howto & implications?

I'm exporting MS Word content to plain text for use with text&file utilities. I have a constraint where the line numbering feature has been enabled in the MS software, and any reference to line ...
9
votes
2answers
9k views

Specify encoding with libreoffice --convert-to csv

Excel files can be converted to CSV using: $ libreoffice --convert-to csv --headless --outdir dir file.xlsx Everything appears to work just fine. The encoding, though, is set to something wonky. ...
9
votes
2answers
5k views

Invert colors in whole PDF (convertion)

How to create pdf with inverted colours of original one? (Just like inverting whole screen with xcalib -i -a) Preferably : not loosing hyperlinks. But it's not requirement. It would be nice if ...
9
votes
3answers
32k views

How can I embed subtitles into videos with ffmpeg?

I'm told it's possible to embed subtitles (.srt) into video files (.avi) using ffmpeg, but I can't find any mention of it in the man page. Is this possible? What command do I use?
8
votes
5answers
8k views

How do I convert Linux man pages to HTML without using groff?

I would like to convert some Linux man pages to HTML without using groff. My prejudice against groff is due to some PNG rendering issues it is giving me that seems to be localized to Sabayon (as these ...
8
votes
1answer
2k views

How to generate a Data URI from an image file?

There are online tools like duri.me that allow to create a Data URI from an image file. Are there any tools that run locally on Linux to do the same?
8
votes
3answers
33k views

Can xxd be used to output the binary representation of hex number , not a string?

I would like to generate a raw binary packet from hex in the command line for the purpose of testing a protocol. I'm hoping its simpler to do it this way than writing an aplication. Here is what ...
8
votes
2answers
4k views

How could I use Bash to find 2 bytes in a binary file, increase their values, and replace?

I'm trying to find two bytes inside binary file, then increase value of those two bytes and replace them inside file. Those two bytes are on positions 0x82-0x83. For now on I have successfully ...
8
votes
3answers
9k views

Transcoding MJPEG Stream to FLV or MP4

I want to transcode MJPEG stream that comes from IP camera (http://xx.yy.zz.tt:8080/video.cgi) to FLV or MP4 stream under Linux OS so that users can play the file using a web based Flash player such ...
7
votes
1answer
359 views

converting pdf pictures to png files makes pictures too small

I'm converting a bunch of pdf vector figures to png files. for f in *.pdf do convert -trim ${f} "${f}.png" done rename 's/\.pdf//' *.png But the dimension of the pictures are too small. The doc ...
7
votes
3answers
54k views

Convert binary mode to text mode and the reverse option

By the following way I convert a simple binary file into a text file od –t x1 Check.tar | cut –c8- > Check.txt Which gives a content similar to: 64 65 76 2f 6e 75 6c 6c 00 00 00 00 00 00 00 00 ...
7
votes
3answers
2k views

How to convert tar file from gnu format to pax format

On the one hand I have a lot of tar files created with gnu format, and on the other hand I have a tool that only supports pax (aka posix) format. I am looking for an easy way to convert the existing ...
7
votes
3answers
2k views

org mode to dokuwiki converter

Is there an emacs org-mode to dokuwiki converter? Is there an dokuwiki to emacs org-mode converter?
7
votes
5answers
12k views

How to convert to HTML code?

Are there any scripts that can convert between text (e.g. <hi>) and the html entities version (&lt;hi&gt;) like this website does? Or at least a PHP file?
7
votes
1answer
15k views

How to convert SSH public key from PEM to DER format?

I'd like to convert an existing public key (generated using ssh-keygen) from PEM-format to DER-format I tried: openssl rsa -in ~/.ssh/id_rsa.pub -inform PEM -pubin -outform DER -out ~/.ssh/id_rsa....
7
votes
2answers
897 views

How to convert ęąśćżńł TXT to PDF with enscript?

I have problem converting a file to PDF. I create the file with echo ęąśćżńł > text and convert: enscript -O text -o - | ps2pdf - out.pdf However, out.pdf has an encoding problem:
7
votes
1answer
1k views

Is it possible the get the original (best) audio quality when using avconv?

In Feb 2011 I had a similar question: ffmpeg and libmp3lame produces bad audio quality? Now I'd like to know if it is possible to the get the original audio quality from a (flash) video? Every time I ...
6
votes
2answers
7k views

Utility to get binary representation from string?

Is there a simple utility like printf that'll give me a "binary representation", i.e. a string like "01010010", from an input string? It would need to support multi-byte encodings.
6
votes
1answer
338 views

Installing Proprietary Windows Drivers on Linux

I have a PC Oscilloscope Instrustar ISDS205X which I used on Windows 10. Now that I have switched to Linux, I am unable to find the respective drivers for it. I have tried installing it on PlayOnLinux ...
6
votes
4answers
16k views

How do I re-encode a mixed encoded text file

I've got a log file that is ASCII, except for a few UTF-8 characters (which I can fix for a future version). For the moment, I need to figure out how to get this file to a viewable/searchable/...
6
votes
2answers
2k views

Convert PDF to images in 1920x1080

i want to convert a PDF to PNG images using convert. The images must fit the 1920x1080 ratio by having a ?x1080 ratio, and have the best quality. Here are many options i can use with convert : https:/...
6
votes
1answer
683 views

ANSI code translator

Is there any tool that translates text with ANSI code to text-like output? tput cap names or the like? Reason for the inquiry is that I would like to use script or the like and view the resulting ...
6
votes
1answer
8k views

Command line for converting .SWF to animated GIF

I'm running Kubuntu. I don't want to install any Windows applications in wine. I would like a (relatively simple) command to convert a flash animation (.SWF file) to an animated GIF. The input .SWF ...
6
votes
1answer
1k views

convert man output to ebook format

I can convert man output to PDF. First, man -t grep >grep.ps (grep is just an example; I am not looking for mobile version of grep man page). Then Adobe Distiller converts PostScript to PDF. ...
6
votes
1answer
4k views

convert pdf to image [jpeg|png]

I need to convert pdf files into image files (like: png (prefer), jpeg). I used convert (from the ImageMagick package) but it takes more than 4 seconds for a 2 page pdf file with only tables (...