Described herein are methods and apparatus for the identification of locations in a presentation stream based on metadata associated with the presentation stream. Locations within a presentation stream are identified using location information and/or signature data associated with the presentation stream. The identified locations within a presentation stream may be utilized to identify boundaries of segments within the presentation stream, such as segments of a show. The boundaries of the segments may then be utilized to change the volume of segments or playback a segment at a non-real time presentation rate.