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Questions tagged [conversion]

Questions regarding conversion between various file formats.

163 questions
455
votes
10 answers

Convert a directory of JPEG files to a single PDF document

I have many JPEG files in a directory, and I want to convert them to PDF and concatenate them together to make a single document. How can this be done? I would prefer using the command line, as this process will be faster.
lovespeed
  • 4,701
241
votes
2 answers

How to simply convert video files (i.e.: MKV to MP4)?

I simply want to convert files, any format to any format (at the moment, I need to convert MKV to MP4-h264), without losing quality. I don't want to resize (scale) the video, I don't want to change its aspect ratio and I don't want it to lose…
user229552
  • 2,511
129
votes
8 answers

converting epub files to PDF format

I would like to know the ways in which epub files can be converted to pdf in ubuntu. Any method, GUI or command line conversion is fine as far as my epub gets converted to pdf. Thanks.
palerdot
  • 1,885
86
votes
6 answers

Is there a better pdf to text converter than pdftotext?

I'm using pdftotext (part of poppler-utils) to convert PDF documents to text. It works, for the most part, but one thing I wish it did was to insert blank lines between separate paragraphs instead of mashing them together. Is there way to get…
dan
  • 3,123
85
votes
4 answers

How can I convert a ppt to a pdf from the command line?

I have a folder containing a bunch of ppts, each of which I'd like to convert to an individual pdf.
James
  • 1,775
68
votes
5 answers

How do I convert a PNG to SVG?

I'd like to be able to crop SVG chemical structures, completely (see this question), that were created using MarvinSketch and I think I might have thought of a solution; I use MarvinSketch to create a large PNG file, then crop that using GIMP, and…
Josh Pinto
  • 8,089
56
votes
8 answers

How do I convert an MP4 to an MP3?

I have some songs which are in mp4 format and I want to convert them into mp3 format. I am new to Ubuntu/Linux. So please explain the step by step process or give any software which can do the above job.
srinu
  • 695
45
votes
8 answers

How can I encode and decode percent-encoded strings on the command line?

How can I encode and decode percent-encoded (URL encoded) strings on the command line? I'm looking for a solution that can do this: $ percent-encode "ændrük" %C3%A6ndr%C3%BCk $ percent-decode "%C3%A6ndr%C3%BCk" ændrük
ændrük
  • 78,496
34
votes
6 answers

How to convert a sound file to Opus

For testing, I want to convert an MP3 and WAV file I have to Opus, what are the steps to doing this?
Luis Alvarado
  • 216,643
33
votes
11 answers

Convert library of WMA tracks to MP3's?

I know there are options such as Sound Converter for doing them one track or directory at a time, but are there any tools that will recursively crawl through a directory's subdirectories and convert all WMA's to MP3's? I basically would like to let…
Mike Crittenden
  • 557
31
votes
4 answers

pdf to mobi convertor

Is there any application which can convert a .pdf file into a .mobi file?
Vijay
  • 1,745
27
votes
8 answers

Preview of CAD files in format .dwg

I'm looking for a utility or a program for Ubuntu, and possibly even for Windows that is able to convert a CAD file format .DWG to PDF. My need is to provide a preview of CAD files, and I thought that the easiest way is to convert them into PDF…
Marcello Picchi
  • 570
27
votes
3 answers

How to replace avconv with (the real) ffmpeg and have it work right?

UPDATE (original text preserved below) With the real ffmpeg about to return (in 15.04), Jon Severinsson's PPA no longer working (for ffmpeg), and both avconv-ffmpeg (now called "libav") and the real ffmpeg (now back to just "ffmpeg") dropped from…
u2n
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24
votes
3 answers

How to fast convert mp4 to webm using ffmpeg?

I have to convert 76 mp4 files to webm for the purpose of a website that uses HTML5 videos. I'm talking about 10 Gb of mp4 files... I know I can simply ask ffmpeg to do that using: ffmpeg -i input_file.mp4 output_file.webm Of course I'll do it…
pr.nizar
  • 790
22
votes
6 answers

how to convert avi (xvid) to mkv or mp4 (h264)

Very noob when it comes to video. I'm trying to make sense of what I"m finding via Google... but its mostly Greek to me. I have a bunch of Avi files that won't play in my WD TV Play box. Mediainfo tells me they are xvid. Specs for the box show…
bcsteeve
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