Eric Bucchare of Indigo Post http://www.indigo-post.com/
suggests these settings for exporting HD progressive footage to QuickTime for use in Flash compression.
In Final Cut Pro
In Final Cut Pro
>>Export “QuickTime Movie” – settings “Custom”
>>Frame Size – 640x360 (custom setting)
>>Pixel Aspect Ratio – Square (w/ ‘Anamorphic 16:9’ NOT checked)
>>Field Dominance – None
>>Editing Timebase – same FPS used on the timeline
>>Compressor (codec) – Animation
>>Audio – 44kHz, 16bit, Stereo
Note: a rough estimate for uncompressed standard definition video is 1 gig per minute.