A hub apparatus (20) is designated to be used in a video communication system comprising the hub apparatus (20) and a plurality of mobile terminals (10a-10d) configured to be wirelessly connectable to the hub apparatus (20). The hub apparatus (20) comprises: a receiving unit (24) configured to receive from each mobile terminal (10) of the plurality of mobile terminals (10a-10d) a video stream, a current speaker indicator to indicate whether the user of the mobile terminal is speaking and an association information which associates the current speaker indicator transmitted by the mobile terminal with the video stream transmitted from such mobile terminal (10), and a generation unit (40) operatively connected to said receiving unit (24) and configured to generate an output video communication stream (6) based on the plurality of video streams received from each mobile terminal (10) of the plurality of mobile terminals (10a-10d), on the plurality of current speaker indicators received from each mobile terminal (10) of the plurality of mobile terminals (10a-10d) and on the plurality of association information received from each mobile terminal (10) of the plurality of mobile terminals (10a-10d).