what is rtmp
The Real-Time Messaging Protocol (RTMP) is a streaming protocol designed by Adobe for high-performance transmission of audio, video, and data. RTMPT is a tunneled version of RTMP designed to get around strict corporate firewalls by sending stream packets through the standard web port (port 80) wrapped in http packets. RTMPT performance is not as great as RTMP so it used only when RTMP is not possible.