Comments on: APNG http://blog.pavlov.net/2008/01/24/apng/ Ramblings from the mind of Stuart Parmenter Sat, 19 Jul 2008 11:13:54 +0000 http://wordpress.org/?v=MU By: PAStheLoD http://blog.pavlov.net/2008/01/24/apng/#comment-2774 PAStheLoD Fri, 25 Jan 2008 16:56:07 +0000 http://pavlovdotnet.wordpress.com/?p=456#comment-2774 Some "moar" info: http://animatedpng.com/index.php/samples/3d-apngs/ I've noticed this bug just with the first one. (Loaded them via "View image" and ctrl-f5, separately.) Some “moar” info: http://animatedpng.com/index.php/samples/3d-apngs/ I’ve noticed this bug just with the first one. (Loaded them via “View image” and ctrl-f5, separately.)

]]> By: PAStheLoD http://blog.pavlov.net/2008/01/24/apng/#comment-2773 PAStheLoD Fri, 25 Jan 2008 16:52:51 +0000 http://pavlovdotnet.wordpress.com/?p=456#comment-2773 2008012304 Minefield/3.0b3pre it does that flickering. APNG is great, I'm suprised that I've never heard of it before, thanks for the mention :) 2008012304 Minefield/3.0b3pre it does that flickering.

APNG is great, I’m suprised that I’ve never heard of it before, thanks for the mention :)

]]> By: Miroslav Glavic http://blog.pavlov.net/2008/01/24/apng/#comment-2772 Miroslav Glavic Fri, 25 Jan 2008 16:15:12 +0000 http://pavlovdotnet.wordpress.com/?p=456#comment-2772 I have noticed the flickering, but the APNG's are awesome. I have noticed the flickering, but the APNG’s are awesome.

]]> By: David http://blog.pavlov.net/2008/01/24/apng/#comment-2771 David Fri, 25 Jan 2008 15:12:57 +0000 http://pavlovdotnet.wordpress.com/?p=456#comment-2771 I'm getting high CPU usage when the apng is visible. Linux 3ld.sld.edu 2.6.18-53.1.6.el5 #1 SMP Wed Jan 16 03:56:43 EST 2008 i686 i686 i386 GNU/Linux Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b3pre) Gecko/2008012404 Minefield/3.0b3pre ID:2008012404 I’m getting high CPU usage when the apng is visible.

Linux 3ld.sld.edu 2.6.18-53.1.6.el5 #1 SMP Wed Jan 16 03:56:43 EST 2008 i686 i686 i386 GNU/Linux

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b3pre) Gecko/2008012404 Minefield/3.0b3pre ID:2008012404

]]> By: José Jeria http://blog.pavlov.net/2008/01/24/apng/#comment-2770 José Jeria Fri, 25 Jan 2008 14:16:58 +0000 http://pavlovdotnet.wordpress.com/?p=456#comment-2770 Opera 9.5 waits for the frame to be loaded before showing the next one. This results in slow animation while loading, and then faster once all of the frames are loaded. Opera 9.5 waits for the frame to be loaded before showing the next one. This results in slow animation while loading, and then faster once all of the frames are loaded.

]]> By: Arthur http://blog.pavlov.net/2008/01/24/apng/#comment-2769 Arthur Fri, 25 Jan 2008 12:52:56 +0000 http://pavlovdotnet.wordpress.com/?p=456#comment-2769 Minefield 2008012404 on Ubuntu Gutsy uses 40% of my CPU (an old Athlon XP 1600+) when the animation is shown, when scrolled offscreen CPU usage goes down to normal. Actually it's Xorg and Minefield together which use so much CPU and not Minefield alone. That's pretty hefty for such a simple animation. Minefield 2008012404 on Ubuntu Gutsy uses 40% of my CPU (an old Athlon XP 1600+) when the animation is shown, when scrolled offscreen CPU usage goes down to normal. Actually it’s Xorg and Minefield together which use so much CPU and not Minefield alone. That’s pretty hefty for such a simple animation.

]]> By: Alfred Kayser http://blog.pavlov.net/2008/01/24/apng/#comment-2768 Alfred Kayser Fri, 25 Jan 2008 09:33:49 +0000 http://pavlovdotnet.wordpress.com/?p=456#comment-2768 The issue is quite simple: the image loader tries to display partly loaded animation frames (i.e. any frames after the first are displayed even if not completely loaded, but due to the speed of the animation, before it has loaded completely, the next (partial) frame is displayed). So the effect only happens during the load of the image, and the load needs to be slower than the animation. The fix is simple: don't do incremental display of animation frames (just wait for the full frame before displaying it). This is also done for GIF animations, and that works for years now. See bug 413933 where I will submit a patch this evening. The issue is quite simple: the image loader tries to display partly loaded animation frames (i.e. any frames after the first are displayed even if not completely loaded, but due to the speed of the animation, before it has loaded completely, the next (partial) frame is displayed).

So the effect only happens during the load of the image, and the load needs to be slower than the animation.

The fix is simple: don’t do incremental display of animation frames (just wait for the full frame before displaying it). This is also done for GIF animations, and that works for years now.

See bug 413933 where I will submit a patch this evening.

]]> By: Aaron http://blog.pavlov.net/2008/01/24/apng/#comment-2767 Aaron Fri, 25 Jan 2008 05:07:02 +0000 http://pavlovdotnet.wordpress.com/?p=456#comment-2767 With Fx3 2008010104, the first time I viewed the image on your blog, it was rendered incorrectly as you described. The second time (an hour later but still in the same session), it looked fine. With Fx3 2008010104, the first time I viewed the image on your blog, it was rendered incorrectly as you described. The second time (an hour later but still in the same session), it looked fine.

]]> By: bharuch http://blog.pavlov.net/2008/01/24/apng/#comment-2766 bharuch Fri, 25 Jan 2008 04:02:43 +0000 http://pavlovdotnet.wordpress.com/?p=456#comment-2766 Nevermind. The dolphin flickers on pavlov.net also. Hm. But only the first load it seems! Nevermind. The dolphin flickers on pavlov.net also. Hm. But only the first load it seems!

]]> By: bharuch http://blog.pavlov.net/2008/01/24/apng/#comment-2765 bharuch Fri, 25 Jan 2008 04:01:11 +0000 http://pavlovdotnet.wordpress.com/?p=456#comment-2765 I don't get the flickering load on yoursite, feedhouse, or planet; and only on the animatedpng.com site on the cube & monkey occasionally. I'm using FF3b2. I don’t get the flickering load on yoursite, feedhouse, or planet; and only on the animatedpng.com site on the cube & monkey occasionally. I’m using FF3b2.

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