Abstract: The invention relates to a method of processing a request coming from a first communication apparatus connected through a communication network to a remote second communication apparatus, the method comprising a step of receiving the request for obtaining digital data of a compressed digital signal that comprises header data and a signal body comprising in particular data packets, wherein the processing of the request comprises a step of determining the position, in the body of the signal, of at least one data packet corresponding to the request according, on the one hand, to the length of the header data and, on the other hand, to at least one pointer marker present in the signal and adapted to provide the length of the part of the body preceding the data packet under consideration.