Codec used in Live streaming

Dear all
I work with live streaming for a few weeks, using flash.media.Camera and flash.net.NetStream class. I have not found any place where the codec is specified, that is used to encode the live stream.
Anyone knows which codec is used and if there is a possiblitiy to use H264 codec for live streaming? I found that live streaming with h.264 codec seems to be possible with the flashmedia encoder (http://www.adobe.com/products/flashmediaserver/flashmediaencoder/). Is this possible with flash player alone?
Thanks for your help,
Marc

After doing some research I found this thread http://balazs.sebesteny.com/implement-h264-live-streaming-with-adobe-air-20/. It uses FMLE but other open source tools perhaps would be better because of licensing issues.
It would be really nice if encoding with h264 would be enabled with flash player. Now that decoding works with Hardware acceleration, perhaps encoding will come as well. Any plans exist?
Thanks,
Marc

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Bom Dia Saille,
Eu acredito que o que você tenha hoje seja isso aqui (Desenho bem simplificado):
Hoje o que você tem é o Aplicativo do Medidor + USB Driver controlando o seu medidor. Basicamente, sua aplciação está dividida em três camadas:
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