Résumé : This paper investigates the problem of managing very large digital television archives. This problem is called television structuring (Or TV broadcast macro-segmentation) and is defined as the process of identifying the structure of a television stream as watchers perceive it: a succession of programs. This is the very first step in order to manage a television collection. In this report, a complete solution for television structuring is proposed, which makes use of simple yet efficient methods in order to deal with huge datasets. Methods from commercial detection are generalized to be able to distinguish regular programs from non-programs. It is shown how television program guides can be used to label the identified programs. It is finally shown how an update procedure can improve the segmentation results over time. Results are provided on 3 weeks of French television.