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Convert and resize images using imagemagick

Posted 05-30-2011 at 10:07 PM by sag47
Updated 05-31-2011 at 01:23 AM by sag47

This past memorial day weekend I took a bunch of pictures which I wanted to post to the web. Web photos are best viewed in 800x600px and I had a lot of them. So I used a simple command to do it.

Code:

for x in `ls -1`;do convert -resize 800x600 $x `echo $x | sed 's/.JPG/.png/'`;done
mkdir web_album
for x in `ls -1 *.png`;do convert $x web_album/`echo $x | sed 's/.png/.jpg/'`;done
rm *.png

Now I don't have to spend all my time in Gimp with that simple batch command.

sag47

Senior Member

Posted in Uncategorized

Views 7812 Comments 1 sag47 is offline

DVD Ripping

Posted 04-25-2011 at 10:54 AM by sag47

Tags convert, ffmpeg, mencoder

I work for a Scientific Institution and a company which recorded talks decided to give us all the talks in DVD format instead of a hard drive full of video files. This is kind of counter intuitive however luckily I use Linux at work. Long story short mencoder with lame installed solved my problems.

Code:

mencoder 
-vf harddup 
-vf-add smartblur=.6:-.5:0,unsharp=l5x5:.8:c5x5:.4 
-xvidencopts fixed_quant=4:profile=dxnhtntsc 
-lameopts cbr:br=128:aq=0:vol=1

...

sag47

Senior Member

Posted in Uncategorized

Views 6746 Comments 1 sag47 is offline

batch resize images using find, xargs and convert

Posted 02-20-2011 at 04:30 PM by dr_agon

Tags batch, convert, find, resize, xargs

applies to: linux, find, xargs, convert, image processing

'convert' command, which is a part of ImageMagick package can be used for image resizing, but it lacks ability to process multiple files (in version of ImageMagick 6.5.7-8 2010-12-02). Instead of writing a shell script you can use find and xargs commands to collect filenames and invoke convert with one filename at a time, like this:

Code:

find -iname "*.jpg" -printf "%f\0" \
 | xargs -0 -I {} convert

...

dr_agon

Member

Posted in Uncategorized

Views 8202 Comments 0 dr_agon is offline

Batch convert images to PDF

Posted 10-10-2010 at 05:48 AM by sag47
Updated 08-11-2011 at 01:10 AM by sag47

Tags convert, imagemagick

Recently (within the past year) I have helped a user with a problem converting hundreds of images into individual PDF files. I was pleasantly surprised to find imagemagick to effortlessly do this.

Command line tool imagemagick does what you need if they're images.
Installation:

Code: