1) Enter GIF URL
test urls:
http://www.spiceware.org/atari/12_30_07_frames/landing_1.gif
http://www.spiceware.org/atari/12_30_07_frames/big_fireball_1.gif
http://www.spiceware.org/atari/12_30_07_frames/jump_down_1.gif

2) Process file