A distribution node among a network of distribution nodes for packet based distribution of voice, video and data packets including multicast packet based distribution of video channels from at least one video server distribution node to a plurality of client distribution nodes selectively consuming the video channels is disclosed. The distribution node comprises a responsive to selection of a new video channel to identify a sub-set of packets within a set of packets of the new video channel for expedited delivery and to expedite delivery of the identified sub-set of packets; thereby reducing switchover latency of the distribution node in response to a selection of the video channel.