From iMovie export to DV quality QT then you need to open up Macromedia Flash Video Encoder, there you import the clip you created in iMovie and it encodes to the desired compression you want in .flv.

Also try:

iWork's Keynote it has an export option to flash. You could first import your movie to it then export to the option of choice.

FFMPEGX 

Video2SWF

VisualHub is another good one

Last update: 03:52 PM Monday, November 20, 2006