[magick-users] animating gif image brightness?

[Fred Weinhaus]

use -modulate

convert animation.gif -modulate 50% animation_50.gif

makes it 50% darker.


see http://www.imagemagick.org/script/command-line-options.php#modulate


simple example using multiframe gif:

convert rose: rose.gif
convert rose.gif rose.gif rose.gif rose3.gif
convert rose3.gif -modulate 50% rose3_mod50.gif






>Hi,
>
>I was looking through all the documentation for animated gifs trying
>to find how to do this, but I just couldn't find it...
>
>I am looking for a way to take an animated gif image and lower its
>brightness by a certain percentage...  How can I do this?
>
>Thank you.
>
>Patrick J. Collins
>http://collinatorstudios.com