Inserting Metadata events in a live stream using non-flash client app

Hi all,

I wish to insert captions into a live flash video stream.

I found an example here : http://www.adobe.com/devnet/flashmediaserver/articles/metadata_video_streaming_print.html

but this example uses a Flash client app wich can invoke something like

video_nc.call("sendDataEvent",null,inputfield_txt.text);

How can do this without any Flash client/environment ? (I of course still use an FMS 3.5)

I would like to use a python (or php...whatever) piece of code to extract caption from VBI in the incoming video stream and insert it in the flash stream.

Any help / experience appreciated.

Regards

Michel