Movie > flash > animated gif - possible?

I tried this and it doesn’t seem to be working…

I took a fraps video from a game, imported what I wanted of it into flash, then tried to export the video into an animated gif. When I do this, the gif just turns out as a white square. ;/

Does anyone know how to make this work correctly?

Edit: If this cant be done, how can I spread out 100+ .jpgs that are already imported into flash over each frame of the movie quickly?