The present invention provides an apparatus for receiving a broadcast content via one or more networks. The apparatus comprises a broadcast network interface for receiving a broadcast stream including a first portion of the broadcast content via a broadcast network, a heterogeneity network interface for receiving a heterogeneity stream including a second portion of the broadcast content via a heterogeneity network, and wherein the broadcast stream further includes timeline component access units containing metadata for synchronizing streams transmitted via the one or more networks, and wherein the timeline component access units include timestamp information representing first timestamps for the heterogeneity stream, a processor for configuring the broadcast content using the broadcast stream and the heterogeneity stream based on the timestamp information.