A playback device for retrieving a data stream having video data includes a java processor for processing a Java application; and a memory operably coupled to the java processor. The Java processor includes an input for receiving an event information associated with playback of a video section of the data stream. The event information is received from a playlist for the data stream and activates functionality provided by the Java application, the functionality being activated concurrently with the playback of the associated video section. The playlist includes a mark for controlling playback of the video section, the mark includes a presentation time. The event information is information indicating that the playback device has reached the mark presentation time during playback.