This stream isn't using rtmp for actual stream. it splits streams into flv chunks and serves it over plain http. it uses rtmp only for communicating with server to retrieve which flv chunk to request.
Code:
http://http-cachelevel3.ustream.tv/sjc-uhs50/sjc-uhs01/streams/httpflv/ustreamVideo/8707800/streams/live_1_1365950097_1876974286.flv?start=195509
Code:
http://http-cachelevel3.ustream.tv/sjc-uhs50/sjc-uhs01/streams/httpflv/ustreamVideo/8707800/streams/live_1_1365950098_1876974286.flv