A computer-implemented method comprises establishing, by media servers, a video conference for client computing devices, each media server receiving audio data and video data from a local subset of the client computing devices, selecting, by each media server, a portion of the local subset for which to send audio data to other media servers, sending, by each media server, audio data associated with the portion to other media servers, after receiving audio data from other media servers, generating, by each media server, ordered global list data that identifies each client computing device for which the media server has received audio data, based on the global list data and by each media server to other media servers, sending video data for each client computing device of the local subset that satisfies a threshold value.