HELP: Bad Video from export to quicktime

whenever i try to export this file to quicktime I get this weird pixelated after image effect(attached screenshot) and instead of smooth video. I’ve tried exporting it every way with different codecs and resolutions, nothing seems to work. Does anyone know why this is happening or how to fix it? is there any good way to convert a swf to an flv file without going through the whole quicktime export? thanks