To develop client side applications that work with the Wowza Pro server you must set the objectEncoding parameter to ObjectEncoding.AMF0 on the NetConnection2 object before connecting to the Wowza Pro server.
The Flex client side code looks like this:
var wowzaURL:String = "rtmp://localhost/myapplication";
wowza_conn = new NetConnection2();
wowza_conn.objectEncoding = ObjectEncoding.AMF0;
wowza_conn.connect(wowzaURL);
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