Talk:Thumbnail scramble

From a cursory search looks like the glitch is caused by Soot using -coalesce and -deconstruct to resize images into thumbnails in Imagemagick.

• https://github.com/MaisonetteWorld/magine/issues/56
• https://github.com/ImageMagick/ImageMagick/issues/3545
• https://imagemagick.org/Usage/bugs/animation_bgnd/ (I should test these old versions. Vichan is old, whileI don't know how PHP package management works, is it possible that Soot updated to a new (old) version and the gifs broke because of that rather than using a wrong command?)

I couldn't replicate it faithfully in the current version of Imagemagick, though.

magick convert shantae.gif -coalesce -resize 181x255 -deconstruct bad.gif

It's clear that the issue is vaguely how the preview disposes of frames, but I couldn't replicate the sheer chaos.

It's default vichan behavior that happens if you forget to install gifsicle you smartass nigga 🤣🤣🤣

Thanks. Do you have experience running imageboards?

No

It's a result of using -resize *without* -coalesce, any only works on GIFs rendered with optimization. The animation spazzes out because only the "moving" parts of the frame are stored. The "resize" command forces these fragments to be the same size as the output image. Coalesce forces all the frames to be redrawn in full. Snopes: https://jqmagick.imagemagick.org/discourse-server/viewtopic.php?t=17511 ~Chud1223 (talk) 16:26, 27 February 2026 (UTC)

thats crazy

but who asked --141.126.58.46 08:20, 22 November 2022 (MST)

Boi I'm finna dox you goofy ahh