How to decrease the latency with flash+http+camera video?

I build a HTTP server between live camera and flash player. The flash player connect http server with NetStream. But i find there is a long latency and NetStream doesn't decode frames when the buffersize reach a special value. So i want to know, how to decrease the latency in those environment?
And why the frame cannot be decoded when the buffersize reachs a special value. I find the buffersize*framerate is about 64. Can i low this value?

Would you mind reposting this question over on the Flash Professional forums?  This forum is primarily for end users, the Pro forums will get you in touch with a wider developer audience.
Thanks,
Chris

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