In one example, a device includes one or more processors configured to determine that a manifest file for media content indicates that the media content includes a first period and a second period, that the manifest file indicates that the first and second periods are continuous, and that advertisement media data is available for insertion between the first and second periods, select a first adaptation set in the first period based at least in part on characteristics signaled for the first adaptation set, retrieve media data of the first adaptation set based on the selection of the first adaptation set, retrieve the advertisement media data, and retrieve media data of a second adaptation set in the second period that the manifest file indicates is associated with the first adaptation set based on the selection of the first adaptation set and store the retrieved media data to a memory.