As for Flash, I though that's just an animation format, so I doubt it would be much use to me. Flash is a very, very versatile format, its not just a plain animation format. It includes vector drawings, animations, Actionscript (for scripting animation as well as interaction), video (since version 8 with aphachannel support and interactive capabilities), bitmap effects (also since version 8). And actionscript also includes functions to have your flash application to interact with databases, xml and html. Also flash8 has it's own video compression codec which is called On2 (On2 VP6 actually i think...) Produces pretty good quality it seems. flas7's codec is not that good though. Oh and there's FlashLite for mobile phones too ;)

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