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Questions tagged [mogrify]

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2answers
592 views

Convert (compress) JPEG images using mogrify keeping the original files in the same directory

I'm trying to convert(compress) a bunch of JPEG images using imagemagick command mogrify, keeping the original file in the same directory. I'm typing in terminal window : mogrify -quality 25% *.JPEG ...
2
votes
1answer
1k views

mogrify - how do you recurse through subfolders in Windows

I thought there was a simple switch in mogrify command options that tells it go through subfolders as well. I didn't find any. On Linux, the "find" command seems to do the trick, how do you do this on ...
0
votes
0answers
74 views

Why does mogrify output more files than what I gave as input

I converted some PDF files to PNG files using: mogrify -background white -alpha off -verbose -density 1000 -resize 1600 -format png ./*.pdf on Microsoft Windows 10 (requires Imagemagick and ...
1
vote
1answer
2k views

Using Imagemagick to convert images to the video: background of the video is black, whereas the background of the pictures are white

I created a movie file from a set of PDF files using: mogrify -verbose -density 500 -resize 800 -format png ./*.pdf" convert -delay 600 *.png movie.mp4 on Microsoft Windows 10 (requires Imagemagick ...
3
votes
2answers
1k views

How to crop north and center with morgify in ImageMagick

Is there a way to crop an image centered horizontally, but not centered vertically? For example, here is how I would want an image cropped: However, using the command mogrify -crop 250x250 -gravity ...
1
vote
1answer
84 views

Imagemagick's mogrify can't render text

I'm trying a simple mogrify test.png -annotate +100+100 '26082015' on a simple image, and no text is rendered. I also tried: mogrify test.png -font courier -fill black -pointsize 20 -annotate +...
2
votes
2answers
587 views

ImageMagick's mogrify tool darkens PNGs (when only trying to resize)

I'm trying to use the simple command to resize images and overwrite the originals: mogrify -resize 80% * My source images are semi-transparent PNGs that happen to be grayscale. The resize operation ...
8
votes
1answer
208 views

How do I batch-downsize images on linux, while keeping small images small?

I have a whole lot of photos and it's time to clean up the mess and free some disk space. I know mogrify is great to batch-resize things down. The problem is, in some directories I have small images ...
1
vote
4answers
3k views

How can I run mogrify over the 3 million JPG files?

I have 3 million JPG files stored in a Linux CentOS 6 server. I want to change quality to %50 file size over 1 megabyte. I wrote this command but got an "argument list too long" error: $ find -type ...
2
votes
1answer
1k views

Normalise levels, contrast, brightness of an image sequence

When making animated gifs or short stop-motion videos from an image sequence, I want them to have all similar levels so that the output looks smooth. It does not have to be a professional quality ...
1
vote
2answers
434 views

Does mogrify copy images that fall through resize filter?

I want to run the following command: mogrify -path /somepath -resize '1600x1600>' * are Images, that don't exceed the size of 1600x1600 copied to /somepath? (I am asking, since they would fall ...