[George Peter Staplin] Sep 24, 2007 - Animng is a file format I created for animated PNG graphics.  It's a portable binary format, with a freely available library written in C, as well as a separate Tcl extension. 

The file format allows for a variable delay between frames, as well as an x,y offset for frames (not yet used in the demos or mkanimng).  It requires libpng.

The code is available from here under a 3 clause BSD license:
http://megapkg.googlecode.com/svn/trunk/csrc/animng/
http://megapkg.googlecode.com/svn/trunk/csrc/include/animng.h
http://megapkg.googlecode.com/svn/trunk/csrc/include/animng_prototypes.h

A tool for making animng binary files is available here:
http://megapkg.googlecode.com/svn/trunk/csrc/mkanimng.c

An extension for Tcl using megaimage is written about on the [animngext] page.

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[Category Graphics]