Last modified: 2011-10-18 13:02:35 UTC
The following animation at commons appears to be corrupted when rendered at 220px, but works fine at other size. http://en.wikipedia.org/wiki/File:Rabatment-rectangle-animation.gif You can see the corrupted image at http://en.wikipedia.org/wiki/Rabatment_of_the_rectangle#Practice @ http://upload.wikimedia.org/wikipedia/commons/thumb/d/da/Rabatment-rectangle-animation.gif/220px-Rabatment-rectangle-animation.gif Is there a reason why the 220px size would corrupt the animation? See also: http://en.wikipedia.org/wiki/Wikipedia:Village_pump_%28technical%29#Gif_black_squares_in_transparency
There was probably something wrong with the image scalar at some point the first time someone wanted that gif at that size. It was then saved for later use. I'm not sure if its possible for an end user to purge a thumb, as a work around, you could probably use it at size 219px or 221px. putting in component wikimedia, as doesn't seem mediawiki specific.
Created attachment 8251 [details] The corrupted 220px animation
Created attachment 8252 [details] The original non-corrupted image.
@Bawolff...could you expand on what went wrong? (some technical details would be nice).
(In reply to comment #4) > @Bawolff...could you expand on what went wrong? (some technical details would > be nice). I don't actually know what happened, other then something happened, and it doesn't appear to be happening any longer.
Resolving this, since it doesn't appear to be happening now and I can't reproduce it. Please reopen if you can reproduce.
See also Bug #28631 for one that currently happens.
It still occurs when the file is at 220px. Corrupt at 220px: http://upload.wikimedia.org/wikipedia/commons/thumb/d/da/Rabatment-rectangle-animation.gif/220px-Rabatment-rectangle-animation.gif Uncorrupted at 221px http://upload.wikimedia.org/wikipedia/commons/thumb/d/da/Rabatment-rectangle-animation.gif/221px-Rabatment-rectangle-animation.gif
re-resolving worksforme That's just a cached thumbnail. ?action=purge'ing (which deletes cached thumbnails) fixed it.
