flv problem

[yourinteractive]

hi firends
we do something regarding video in flash, but the flv file very large when it export from AE(After Effect).
reduce the export rate, the Video screen quality very low.
is there any way to improve the quality and reduce the file size?
thanks.

[EastCoast]

What resolution/frame rate/codec are you using? Variable or static bitrate?
What filesize do you end up with for what duration?
Without information on these it's impossible to judge whether any improvement can be made.