zyzsdy / apng2gif

This program converts APNG animations into animated GIF format.

apng2gif

This project has been in disrepair for long time. Recently, there is need to change the number of loops in apng file. So I used it to modify it.

Here is the original source code information:

---

This program converts APNG animations into animated GIF format. Wu quantizer is used for true-color files.

http://apng2gif.sourceforge.net/

Copyright (c) 2010-2015 Max Stepin [e-mail]

License: zlib license

---

Usage

apng2gif anim.png [anim.gif] [-t tlevel] [-b bcolor] [-l loop]

Options:

-t 128 

will set the transparency threshold level as 128, so pixels with alpha level less than 128 will become fully transparent.

-b 255 0 0 
-b "#ff0000"

will set the background color as red, so partially transparent pixels will be composed over red. When -b is used, -t is ignored.

When no options are specified, default threshold is 128, no background color.

-l 0

will make the generated gif loop infinitely, replacing the number of loops originally set in apng file.

-l orig

will preserve the original loop count of apng file.

Build

All dependencies are included in the source code repository.

Use the following command to build:

mkdir build
cd build
cmake ../
make
make install

If you use CMake GUI:

Source code: Select the root directory of this repository. Build Binaries: Use ./build.

Then click the button Configure twice, then click the Generate button, and then you can see the project file.