Re: seeking for help on MNG creation

At 12:04 AM 4/1/2004 +0200, Sven Neumann wrote:

>I wonder if there's a way to bring the file size down further. Is
>there a way to only replace some areas of the previous frame, similar
>to how GIF animations are optimized? This won't help for all
>animations but it could help for some of them.

Yes.  ImageMagick will convert an optimized GIF to optimized MNG.
It uses DEFI to offset the (smaller) subsequent frames, and
IHDR to set the dimensions.

See the ie*.mng demos at
ftp://swrinde.nde.swri.edu/pub/mng/images/ in which all images
after the first are 25x25 and overlay an area near the right edge
of the frame.

Glenn


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