Secure equipment which is used, on request, to distribute, record and display audio-visual works with an mpeg-2 ts-type format

摘要

A process for distributing audiovisual sequences in accordance with a nominal stream format respecting a MPEG-2 TS norm including a succession of TS packets, including analyzing the stream made prior to the transmitting to client equipment to generate a first stream in conformity with the MPEG-2 TS format, modifying all or part of the TS packets by substituting packets of the same structure, but whose content was modified, and generating a second stream of a format including digital information suitable for permitting reconstruction of the nominal stream, separately transmitting the two streams from a servers to the equipment, and a calculation is made on the equipment of a synthesis of a stream in nominal format as a function of the first stream and the second stream.