I'm wondering if this is possible with AS3 and Flash CS4. Is there a way to have the user select and image file, resize it client-side, then send that data to my server? I know how to upload an image with Flash and resize it server-side, but it would dramatically decrease the upload time and bandwidth usage if it could be resized BEFORE the upload.

Is there a way to send bytes of information instead of an actual file?
Thanks for any help with this!