MPEG-J: Java application engine in MPEG-4

MPEG-4 Systems version 1 defines the presentation engine for the MPEG-4 terminal. MPEG-J is the Java based application engine defined in the version 2 of the MPEG-4 standard. This facilitates programmatic control as opposed to the parametric control provided by the presentation engine. MPEG-J refers to the collection of Java APIs defined by the Systems subgroup of MPEG. These APIs are used to access and control the underlying MPEG-4 terminal. The MPEG-J framework also defines the delivery mechanism and the lifecycle of applications. These applications can be local or remote (MPEGlet). They use the MPEG-J APIs to control the MPEG-4 terminal. MPEG-J can be used to include behavior based on time-varying terminal conditions in the content