[Qt-qml] How to animate a sequence of png images

[Jason H]

I've used AVISynth to turn PNGs into AVIs. 
http://avisynth.org/mediawiki/Main_Page

It's scripted.





________________________________
From: "Andrew.Ratcliff at nokia.com" <Andrew.Ratcliff at nokia.com>
To: michael.brasser at nokia.com
Cc: Qt-qml at trolltech.com
Sent: Thu, September 9, 2010 6:29:08 AM
Subject: Re: [Qt-qml] How to animate a sequence of png images

  
Hi Michael
 
Hadn’t come across mng format before but that has done the trick thanks.
 
FYI to make mng format from transparent png files:
http://social.msdn.microsoft.com/Forums/en-US/hddvd/thread/90c3d6de-2613-4372-84fd-b1921c45a6d5

I found that using ImageMagick was the least painless of several programs I 
tried.  You can download it at http://www.imagemagick.org/.  

First, navigate to the ImageMagick folder via the command prompt and then to 
convert PNGs to MNGs type:
convert -delay 10 "<path to PNGs>*.png" "<path to put MNG>\<MNG Name>.mng"
The delay there adds a delay between frames so the animations aren't as fast.  
It's an optional flag.  Also, if you're using PNGs with transparent backgrounds, 
try doing:
convert -delay 10 -dispose 2 "<path to PNGs>*.png" "<path to put MNG>\<MNG 
Name>.mng"
The dispose flag does the following:
  Undefined    0   No disposal specified (usually equivalent to 'none').
  None         1   Do not dispose between frames. Just layer the next frame.
  Background   2   Overwrite the frames area with the background color.
  Previous     3   Overwrite the frames area with what was there prior to 
overlaying.
Cheers
Andy
 
 
 
From:Brasser Michael (Nokia-MS-Qt/Brisbane) 
Sent: 09 September, 2010 10:11
To: Ratcliff Andrew (Nokia-MS/Oulu)
Cc: Qt-qml at trolltech.com
Subject: Re: [Qt-qml] How to animate a sequence of png images
 
AnimatedImage provides support for mng and animated gifs, if either of those is 
an option for you.
 
Regards,
Michael
 
On 09/09/2010, at 4:12 PM, ext Andrew.Ratcliff at nokia.com wrote:


Hi all,
 
What is the best way to animate a looping sequence of 30 or so transparent png 
images in QML?
 
Cheers
Andy
 
<ATT00001..txt>


      
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