A system for creating and viewing customized multimedia segments allows a user to create event identification data from in-band data in a program stream. The in-band data is processed and compiled into event identification data associated with the content stream. The event identification data identifies patterns or sequences of in-band data associated with events in the content stream. Metadata are also included in the event identification data. The event identification data is provided to multimedia devices which receive multimedia content streams containing content streams with in-band data. The in-band data are parsed and compared to the event identification data. If a match occurs, the multimedia device uses the metadata to identify events or perform specified actions.