wok-next view apng2gif/description.txt @ rev 19641
Add libpng12; up libpng & apng tools.
| author | Aleksej Bobylev <al.bobylev@gmail.com> |
|---|---|
| date | Wed Feb 15 18:52:32 2017 +0200 (2017-02-15) |
| parents | 1ce2e857978b |
| children |
line source
1 This program converts APNG animations into animated GIF format.
2 Wu64 quantization is used for true-color files. Transparency is handled either
3 using a threshold, or composed over chosen background color. CLI version is
4 OS-independent, GUI version is available for Windows.
6 Another converter: gif2apng
8 Features
9 --------
11 * Wu64 quantization for true-color files
12 * Flexible options for transparency handling
13 * CLI and GUI versions available
14 * OS-independent source code is under zlib license
16 Usage
17 -----
19 apng2gif anim.png [anim.gif] [-t tlevel] [-b bcolor]
21 Options
22 -------
24 * -t 128 : will set the transparency threshold level as 128, so pixels with
25 alpha level less than 128 will become fully transparent.
26 * -b "#ff0000" -b 255 0 0 : will set the background color as red, so
27 partially transparent pixels will be composed over red.
28 When -b is used, -t is ignored.
30 When no options are specified, default threshold is 128, no background color.