Apache OpenOffice (AOO) Bugzilla – Issue 13836
Gif animated without anti aliasing on animations with Diaporama
Last modified: 2013-08-07 15:21:02 UTC
You insert a Gif animated File Graphic in Presentation, clic on it, F4, clic on Keep ratio ON, you can leave 100%, but you will see better the problem with 200% or 400% of the size. Then you choose Slide Show => Slide Show settings => NO Animation allowed, and you run Diaporama. Picture is very smooth, because there is an anti-aliasing software working on. You stop the Diaporama, you choose again Slide Show => Slide Show settings => YES Animation allowed, and you launch Diaporama, No anti aliasing at all on pictures, you can see big points everywhere on the mobile lines of the picture. Two jointed Gif animated files : - animrhombor.gif is made of 12 pictures. - animalpha.gif is made with 8 pictures. Problem is : you don't get at all the same problem on PowerPoint from Office 2000 or Office XP, a lot of people wants migrate to OOo and want to keep the Quality of their animations in Diaporama. The animations are less quick in PowerPoint as the algorithm for each picture is about : Clear -> following picture -> anti- aliasing -> show picture ... and again for the next picture. With Impress it's quiker as we have : Clear -> following picture -> show picture ... and again for the next picture. But the anti-aliasing software is already present in Impress, as you got it in Diaporama when you DO NOT request Animations allowed. So I presume, may be it's possible and not really difficult to include the anti- aliasing procedure already written, into the Animation Procedure. It would be a nice feature, as first Gif animated are very popular, in second you get it with PowerPoint, and third to help people to migrate easily to OOo. I choose DEFECT, because I think may be as anti-aliasing procedure was already present with NO Animations, it has been certainely forgotten when they write the animated procedure. You got the same problem on Linux or Windows and with OOo1.01 to 644m11, and with Draw and Writer for too, but it's not really our problem here. Thanks in advance (TIA ;-) to help these guys and me to show Diaporama of Quality with OOo. If you need more explanations, don't hesitate to email your request. Best regards, Jean-Francois Leclerc
Created attachment 5901 [details] Gif animated file
Created attachment 5902 [details] Gif animated file
Status New
Replace the above message : Status Unconfirmed
Reassigned to Christian.
set to new
I can reproduce the bug. to reproduce: - insert a small animated gif - increase the size of the gif - take the gif in the clipboard - 'paste special' the gif as bitmap - the animated gif is 'cornered' - the bitmap is smooth.
Hi Thorsten, this bug seems to belong to your field of responsibility.
Okay, will have a look at the performance impact. Set to 'enhancement', because the original behaviour was intended. Problem is, that you have to render the whole picture antialiased for every frame, not only update the changed parts.
Absolutly Sir, it's why I tried to imagine that the algorithm used by PowerPoint was about : Clear -> following picture -> anti-aliasing treatment -> show picture ... and so on. PowerPoint Diaporama is slower than Presentation one, but this algorithm would allow to run a big Gif animated file of 100 or more pictures. I think anti-aliasing treatment is separatly done for each frame. Anyway, Thanks a lot for your help, Greetings Jean-Francois Leclerc
For her information, Sophie Gautier has been added in copy of this issue, Greetings, Jean-Francois Leclerc
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Thanks very much Thorsten to have fixed it, good news, very good work, As you know, the next year Gif will be in the public domain, so free of charge, at the same time I hope OOo version 2.0 will be launched ! Greetings, Jean-Francois Leclerc
"According to the OpenOffice.org roadmap (http://tools.openoffice.org/releases) this issue was retargeted to OOo Later."
Reset to default bug assignee.