Last modified: 2014-03-05 17:50:28 UTC

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Bug 62146 - Better APNG resizing
Better APNG resizing
Status: UNCONFIRMED
Product: MediaWiki
Classification: Unclassified
File management (Other open bugs)
1.23.0
All All
: Low enhancement (vote)
: ---
Assigned To: Nobody - You can work on this!
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2014-03-03 15:41 UTC by Shyamal
Modified: 2014-03-05 17:50 UTC (History)
6 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description Shyamal 2014-03-03 15:41:54 UTC
Animated PNG (APNG) is not supported by all browsers but even on browsers that support it, animation fails when the image is not shown at original size. 

Apparently the resizing for the remaining frames fails. 

One developer notes that it can be fixed by dissasembling, resizing and assembling the frames
http://ruedigergad.com/2013/08/03/note-to-self-resize-animated-png-apng/

./apngdis animated.png
for i in *png ; do convert $i -resize 32x32\< $i ; done
./apngasm output.png apngframe00.png 1 25 /f
Comment 1 Andre Klapper 2014-03-03 16:19:16 UTC
Could you please provide an example link to APNG uploaded to Commons, or such?
Comment 2 Bawolff (Brian Wolff) 2014-03-03 17:55:00 UTC
https://commons.wikimedia.org/wiki/File:Animated_PNG_example_bouncing_beach_ball.png

(As comment 0 says, we strip animation on resize, and only firefox will show it animated. All apng files will have a warning on their page about lack of animation in resize)
Comment 3 Shyamal 2014-03-05 17:50:28 UTC
(In reply to Andre Klapper from comment #1)
> Could you please provide an example link to APNG uploaded to Commons, or
> such?
Any of the larger files on https://commons.wikimedia.org/wiki/Category:Animated_PNG

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