Identification and recording of program sub-segments

Techniques are provided for identifying and recording program segments and sub-segments for later playback and use. In general, in one aspect, the invention features a method of recording a sub-segment of a broadcast program. The method includes receiving a user input of one or more user specified parameters, identifying a program sub-segment starting point within a program using data in a broadcast stream, and identifying a program sub-segment ending point within a program. The method also includes storing a program sub-segment and presenting the program sub-segment to a user.