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Accepted
Samir Sabri
Asked: 2012-11-04 19:43:55 +0800 CST

How to add support for the JPEG image format

  • 772

After installing Imagemagick, I've tested it with jpg image, like this:

identify 1.jpg

But, I got this result:

identify: no decode delegate for this image format `1.jpg' @ error/constitute.c/ReadImage/550.

Then, I tried to add support for JPEG format by:

yum install libjpeg libjpeg-devel

but, I got:

Setting up Install Process
No package libjpeg available.
No package libjpeg-devel available.
Nothing to do

I thought I need to update the apt-get, I did:

apt-get install libjpeg libjpeg-devel

but, I got:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libjpeg
E: Unable to locate package libjpeg-devel

Is there an easy way to get those libraries installed ? I am using Ubuntu 12.04.

imagemagick

8 Answers

  1. Best Answer

    I fixed the problem by installing from source the jpeg encoding library available at http://www.ijg.org/files/jpegsrc.v8c.tar.gz.

    cd /usr/local/src
tar xvfz jpeg-8c.tar.gz
cd jpeg-8c
./configure --enable-shared --prefix=$CONFIGURE_PREFIX
make
sudo make install

    Then I re-installed ImageMagick from source:

    cd /usr/local/src
tar xvfz ImageMagick-6.6.9-5.tar.gz
cd ImageMagick-6.6.9-5
export CPPFLAGS=-I/usr/local/include
export LDFLAGS=-L/usr/local/lib
./configure --prefix=/usr/local --disable-static --with-modules --without-perl --without-magick-plus-plus --with-quantum-depth=8 --disable-openmp
make
sudo make install

    Now its working, I've tested it like this:

    sam@ubuntu:~/RubymineProjects/project/tmp$ identify 1.jpg
1.jpg JPEG 128x106 128x106+0+0 8-bit sRGB 2.22KB 0.000u 0:00.000
    • 12

  2. If you decide to build ImageMagick from source, you need to be prepared to manually resolve all dependencies. Unless you have a pressing need, you should install all software on Ubuntu from a repository -- either the official repos or a PPA.

    If you install Imagemagick using APT (apt-get, Synaptic, Software Center, etc.), then JPG files will work just fine, as I confirmed on my machine.

    If your reason for building from source is to get a more recent version, hunt for a PPA that tracks the most recent version. If you're building from source in order to help with development, then you should find out from the Imagemagick folks just what is required to succesfully build it from source. It might be that you need to specify some flag to ./configure or have some development library installed before running ./configure.

    But normally, building from source just needlessly complicates things.

    Oh, by the way, Red Hat and Ubuntu use different names for packages. So if yum complains about a missing package, it shouldn't be surprising if apt-get can't find a package by that name. You shouldn't mix package managers on a system unless you have a really good reason to do so. Even then, try every other option first.

    • 6

  3. Note that the no decode delegate error can (quite confusingly) result from imagemagick (or some part of it) not finding the file. So before running to reinstall imagemagick, check with identify -list format and convert -list configure whether the JPEG format is supported, and if it is, the problem will probably be somewhere else.

    For example, convert -resize 50% foo\ bar.jpg gave me a no decode delegate for this image format eror, but convert -resize 50% 'foo bar.jpg' worked perfectly.

    • 3

  4. If you have just installed php5-imagick, try also installing the full imagemagick package. This will install all required libraries, such as the jpeg one.

    sudo apt-get install imagemagick

    Then restart your webserver to reload al libraries:

    sudo service apache2 restart

    JPEG decoding should now work without error.

    • 1

  5. have you tried :

    sudo apt-get install libjpeg62

    if the above command doesn't work, please go through following link.

    http://psx-scene.com/forums/f150/help-install-libjpeg-libpng-ubuntu-9-10-livecd-64122/

    Let em know, if this was helpful, good luck... :)

    • 0

  6. | Easiest way | Download "Synaptic Package Manager" from Software center. --> removed older libjpeg packages* --> reinstalled libjpeg8 & libjpeg-turbo8 & libjpeg-turbo8-dev.

    PS: I was getting same error. It took me 2 days to get solved. My error when I was trying to display jpg image:

    no decode delegate for this image format `jpeg' @ error/constitute.c/readimage/504

    Then, I download "Synaptic Package Manager" from Software center. --> removed older libjpeg packages* --> reinstalled libjpeg8 & libjpeg-turbo8 & libjpeg-turbo8-dev.

    (*synaptics package manager will show dependency with other package, remove only older independent libjpeg packages)

    After that I am able to open JPEG images without any fear of error.

    Hope it helps :)

    • 0

  7. That error message also appears if you have SPACES in file's names, as imagick and its toolset can't process those correctly on Linux. So before processing the files with imagemagick, mogrify, or identify, or any of the tools that come with imagemagick, do a

    sudo find ./ -depth -name "* *" -execdir rename -v 's/ /_/g' "{}" \;

    to replace all spaces in file names with underscores;

    I hope this will help someone

    • 0

  8. I resolved it by installing ImageMagick rpm using dnf command. See my answer here for reference - ImageMagick PNG delegate install problems

    • 0