Concurrent's latest software release for its MediaHawk VX multiscreen video delivery system is designed to allow operators to insert unique advertisements in individual VOD sessions at any point during playback.Insertion of mid-roll, pre-roll and post-roll ads within VOD sessions can be directed from an external ad decision engine using SCTE interfaces and introduced into interactive video streams by the server. It's intended to let operators insert new or replace existing advertisements in premium VOD content, free VOD content, or time-shifted TV. Ad replacement features can be used to insert specific ads in time-shifted TV content for targeted zones being served.