Abstract: Digital audio and/or video programs that have been compressed on the basis of groups of pictures (GOPs) are recorded on a medium that allows immediate jumping between groups through co-storage of Transport Stream packets and pointer information. In particular, coexistently with the storing, successive pointers are derived in realtime from a primary Transport Stream that collectively point to data packets in a reconstructed Transport Stream which contains entry points. These pointers are stored at predetermined locations on the medium.