Does anyone got an ideia on how to get client side image resize using flash.
Example: Client chooses an image with 1200x800 and before it uploads it flash will turn
Silverlight, ActiveX and Java can do this completely client-side. If you have to use Flash you are going to need to use Flash 10 which isn't prevalent quite yet. Here is an example on uploading an image to Flash then resizing it on the client from Flash Cafe.
Other options in Flash 8 or 9 would involve a server-side resizing script, defeating the purpose in most scenarios.