5. The method of claim 4 wherein said choosing a referential segment includes using video matching techniques to locate a segment in a video bounded by two specific boundaries.
4. The method of claim 3 additionally comprising computing the offset values stored in said offset table by: choosing a referential segment; aligning the start position of said referential segment in a master file with the start position of said referential segment in a slave file; and computing the difference in start times.