Duplicating stream object to new stream with lower resolution

Hi all generally I have a question, Is it possible for ams to split my original live stream to a new stream but with lower resolution, so i have two streams one with high resolution and one with low resolution?
If not I how does it Adobe Flash Media Live Encoder do? I can steam up to 3 different resolutions from one camera object. Is it possible to do also from flash?
I want to built a multi user conference application. But have some cpu usage  issues, so I need a additional lower resolution stream to use for the miniature views.
Could You help me with this, any tips how could I do such a thing?
I using rtmp protocol to communicat and adobe media server 5.
Sorry if a similar thread was already published on this forum.

Thx 4 the replay.
So maybe I could do something like this:
I am able to send two streams from one camera but they both have the same  resolution.
Is there any way from flash app to send two streams from one camera with different resolution like FMLE does?

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