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I am building a flash widget for uploading files, but I want to display the thumbnail with html/js, once I have the file loaded via Browse into flash and have access to the raw data, is there a way to convert that to a base64 encoded dataURL so I can send that back out to JS to create a thumbnail like ?
Thanks!
Take a look at this article, as it describes how to convert a ByteArray into a png image.
ps: The PNGEncoder class is part of the as3corelib.