I've been trying to convert a few .SWF files to be animated .GIFs. The issue I am having is that the converted files are left with watermarks, cannot support the file size (500x200px) because it is a trial version, as well the quality is often poor. Many other converters leave the end result in a very poor quality.

Is there another way to convert .SWF files or know of a reliable .SWF converter and be free?