An82sprite is a GIMP script that takes the .bmp's and the alphas made by an Anim8or movie render, applies transparency according to alphas, and saves them as .png's.
Installation:
1) Move an82sprite.bat to the folder where your renders are located.
2) Move an82sprite.scm to Program Files\GIMP 2\share\gimp\2.0\scripts.
Use:
1) Edit an82sprite.bat and change (without changing any other symbol):
- name to the name of your render (i.e. if your renders are named foobar0005.bmp and foobara0005.bmp
respectively, write foobar instead of name).
- 1 to the number of frames you have rendered.
2) Run an82sprite.bat.
Latest version is 1.0 (final, I hope), you can download it from here.