Flash movies load faster and save on download time because Flash is vector based whereas HTML is not. Flash gives the user (the person viewing/using the Flash movie) a more responsive ‘rich-client' like experience.
All of these points are true, but they can be true for HTML pages as well (except for the vectors). I will address these points now:
Flash pages can be made to load faster, but most of the time, the way they are designed in the real world, they do not. That is not a Flash problem, it is more an issue of the Flash developers going nuts with fancy and heavy Flash movies.
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SWF Converter for Mac(SWF to MP4 Converting Mac and SWF to MOV Converting Mac) supports perfectly converting SWF to popular video, image and audio formats on Mac. After the conversion, you can effortlessly playback SWF movies with cool gadgets or share on Youtube etc on Mac.