There is a button for sending audio in AvPresence. For the case of using multiple videos, after removing this button, the client flash cannot automatically select the "no occupation" component to release its own video, I use this solution. Methods: A bruce variable onAir is defined in AvPresence, and the external change the value of the ONAIR when the video component is occupied. When requesting a video, the rotary ONAIR is the component of False. However, this system has a big overhead, and I don't know if there is any good way.
