Questions tagged [convert]

related to the conversion from one [file-] format to another

A GUI based software, script or command-line solution is needed, in order to convert from one format to another.

287 questions
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13 answers

How to convert PDF to image?

I have requirement of converting PDF pages to images. There is a background image with some text in my file, and when I save it as an image only the background image gets saved. Is there any software available for the same so that complete page can…
288
votes
5 answers

Trouble with batch conversion of .png to .pdf using convert

convert /home/bill/TempScan/*.png myfile.pdf gives error message: convert-im6.q16: not authorized `myfile.pdf' @ error/constitute.c/WriteImage/1037. Any help would be appreciated!
211
votes
6 answers

Any app on Ubuntu to open and/or convert HEIF pictures (.HEIC, High Efficiency Image File Format)?

A certain cellphone maker has changed the default format of taking pictures to HEIF (.HEIC, High Efficiency Image File Format), without asking the users (although there is still the option to use jpeg/jpg). Is there an app/program on Ubuntu that…
141
votes
11 answers

How can I convert audio from MP4 or FLV video files to mp3?

Is there an application that allows me to extract the audio from a MP4 or FLV video file and store it as an MP3 file for use in a portable media player?
b-ak
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104
votes
4 answers

Error during converting jpg to pdf

Each time I want to convert jpg file to pdf by this command convert *.jpg pictures.pdf I have this error message: convert: not authorized `pictures.pdf' @ error/constitute.c/WriteImage/1028.
Adon Naaman
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98
votes
12 answers

How to convert a m4a sound file to mp3?

I tried to convert an .m4a file to an .mp3 file using ffmpeg with the following command: $ ffmpeg -i music.m4a music.mp3 Unfortunately, I got a zero byte-sized file returned as output. The output of the command is as follows: FFmpeg version…
Student
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92
votes
2 answers

Convert mp3 file to wav? using the command line?

I have an Mp3 file i need to convert to .wav to be able to import it into a voice changer program. How do I do this using the command line?
TellMeWhy
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75
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4 answers

Bulk converting images from one format to another?

I want to convert a batch of images, nearly 100, from jpg to png format. How can I do this without renaming them, but instead actually converting the format?
opu 웃
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67
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3 answers

Convert .JPG or .PNG to .ICO using terminal and back

Is there a command I can use to convert a .jpg or .png or other to extension to a .ico? If possible also to resize it to be a favicon size? I'd also like to turn it from .ico to .jpg or .png.
67
votes
2 answers

imagemagick - convert not allowed

I have multiple *.jpeg pictures I like to merge into a single *.pdf file like so: convert Blatt1.jpg Blatt2.jpg Blatt3.jpg Blatt4.jpg out.pdf I am prompted with the following exception: convert: attempt to perform an operation not allowed by the…
n00b.exe
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8 answers

Batch processing tif images? Converting .tif to .jpeg

I'm trying to mass convert a handful of .tif files. I found phatch could look like a good candidiate but I'm running Ubuntu 11.04. Looks like they don't have a .deb for my version. Anyone have any alternatives to phatch or any other recommendations…
53
votes
7 answers

Converting DJVU to PDF

I want to convert a DJVU document into a PDF document, separating and preserving the text layer and the images while also keeping the structure from the DJVU. How can I do this in Ubuntu? (I will then be using Calibre to convert to ePub/Mobi, so if…
hayd
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48
votes
4 answers

ImageMagick convert can't convert to webp

On Ubuntu 12.04 ImageMagick doesn't seem to support webp. convert flyer.png flyer.webp Creates a png file with webp extension. On webp docs is stated that ImageMagick does support webp $ convert --version` Version: ImageMagick 6.6.9-7 2012-08-17…
Janghou
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47
votes
9 answers

bulk/batch convert mp3 files to ogg via command line?

is it possible to convert mp3 to ogg via command line? I'd like to just in a bulk swoop convert my mp3 files to ogg so i can play them in firefox without any issues.
41
votes
6 answers

Convert filesystem NTFS -> EXT4?

I have 2 TB of data on an NTFS drive which I would like to convert to EXT4 filesystem. My OS runs on a (comparatively) small 60GB SSD. Is there any way to convert the filesystem, apart from backing up and reformatting?
wim
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