GNU bug report logs - #23431
Displaying animated GIFs can make Emacs unresponsive

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Message #142 received at 23431 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Juliusz Chroboczek <jch <at> pps.univ-paris-diderot.fr>
Cc: 23431 <at> debbugs.gnu.org
Subject: Re: bug#23431: 25.0.93; EWW hangs
Date: Wed, 04 May 2016 17:16:54 +0200

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> If you compare how long time the "display" command uses to display an
> image (and that's a pure ImageMagick app) with Emacs when displaying
> via ImageMagick, the difference can be striking.

Hm.  So I thought.  But then I tried displaying the test image here in
with "display", and for the first frame to pop up, it took...  six
seconds, which is the same amount of time that Emacs uses.

Ok, there's nothing we can do here to improve the situation.  Except
implement image scaling ourselves, so that we can use the giflib library
to decode the GIF, and then scale it afterwards.  Which should be
doable, but is outside the scope of this bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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