Hello, I have following requirements for multi-user video conference: 1. One Teacher and up to 10 Students are in the same room. 2. Teacher hears everyone in the room and sees video streams from every student (total bandwidth = 1 audios stream + n video streams). 3. Student hears everyone in the room and sees video stream from Teacher only (total bandwidth = 1 audio stream + 1 video stream). 4. There is no CPU intensive video encoding process on the server. Teacher receives video streams as-is plus muxed audio stream. 5. Conference is auto-recorded on the server. (I don't know exactly how, mp4 with multiple video streams?) Is it possible to implement this with FreeSwitch? If no what requirements should be relaxed? Also what exactly is the difference between "mux", "transcode" and "passthrough" video modes? -- Best regards, I. Sokolov