gistfile1.txt

take a file.gif


gifsicle.exe -b -O3 file.gif

"C:\Program Files (x86)\IrfanView\i_view32.exe" file.gif /extract=("\extracted",gif)

gifsicle.exe extracted/file_frame_*.gif > file.gif


and repeat

(irfanview's gif decoding isn't entirely compatible with the optimized gifs gifsicle spits out, so glitching the gif out. you can obviously then repeat this, to increase the level of glitching present)

See an example output at http://nottheinternet.com/files/art_glitched.gif

(the unfortunate part of this technique is that it needs cmd.exe and MSys for different commands.. MSys for the * globbing in the last step, cmd.exe to get IrfanView to work.)