Fix for "convert: no decode delegate for this image format "
While working with ImageMagick on one of my servers I was getting the following error:
convert: no decode delegate for this image format
This means that, more than likely, I was missing the decoding library. Apparently you need to install it and then recompile ImageMagick to work with Jpg files. I'm not sure why it wasn't installed by the OS though...
Anyway, to fix:
- Go to: http://www.imagemagick.org/download/delegates/ and download the required/missing delegate library.
- Execute "gunzip libjpeg-6b.tar.gz"
- Execute "tar -xvf libjpeg-6b.tar"
- Change directories to the newly created "libjpeg-x"
- Execute "./configure"
- Execute "make"
- Execute "make test"
- Execute "make -n install" first to see if the makefile will put the files where you want them.
- If there are no errors and you're ok with the installation path go ahead and install with "make install"
NOTE: On my system the manual directory wasnt' in the expected path so an error was thrown: "/usr/bin/install: cannot create regular file `/usr/local/man/man1/cjpeg.1': No such file or directory".
To fix I just created the expected directory "/usr/local/man/man1/" and install went smooth.
After that it was a simple matter of reinstalling ImageMagick.
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libjpeg-6b.tar.gz installation went well, and I did reinstall IM.
But I’m still getting the same err msg
identify PG_script/533589.tif
identify: no decode delegate for this image format `PG_script/533589.tif’ @ constitute.c/ReadImage/526.
any clues ?
It looks like you’re trying to recognize a tif image but you installed the jpeg library. Can you confirm you’ve installed the tif library?
I found that I needed to add the following variables after ./configure
./configure CPPFLAGS=-I/usr/local/include LDFLAGS=’-L/usr/local/lib -R/usr/local/lib’
Otherwise, the configure process could not locate and test the JPEG (and PNG) headers and libraries.
- Mike
Billion Thanks! You saved my day!
Hi Eric,
Thanks for this post, helped me immensely.
Shankar
HI,
Thanks for the info, helped me too.
I’m trying to do image = Magick::Image.read(open(‘http://ruby-lang.org’))
I’m trying to load a landing page.
Getting the same error. Any idea on how to get past the error?
Hello everybody,
I have same problem described above.
I’ve installed libjpg12-dev located on /user/lib using command ‘sudo apt-get install libjpg12-dev’
In my Makefile I’ve remarked 3 librarys path. /usr/lib, usr/lib/ImageMagick, and /user/local/lib to point that libraries.
Compiling process was OK, but when i want to execute my app, it returns the famous error.
I’ve already tried to remove and install the jpg library without success. After that, re-install ImageMagick (Magick++ to develope on C++) without changes.
My Ubuntu was a 64bits release. Could be any problem or incompatibility in IM, who are looking for a wrong path?
I’m starting to freak out. I’ll aprecciatte any clue or help.
Thanks in advance.
[...] fand ich in diesem Blog: http://blog.ericlamb.net/2008/11/fix-for-convert-no-decode-delegate-for-this-image-format/ Ich h.ielt mich jedoch nicht an die Anleitung des Blogautors, sondern an die des Kommentators [...]
I am using windows system. I am also getting the same issue. Please tell me how I should resolve this.
after aplying the fix, I’‘ve got the same error. Thinking about it, I realised that I have to recompile ImageMagick and then it works
Tanks a lot, i spent my evening on this issue !
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