Patent ID: 8229117

Claim:
A process for distributing digital audiovisual sequences in accordance with an original stream format comprising a succession of frames containing original data comprising: generating a modified main stream and complementary information of a format from the original stream, wherein generating the complementary information comprises: extracting and substituting at least one original piece of data of the original stream, storing the original data in the complementary information, formatting the complementary information into segments with each segment corresponding to at least one entire audiovisual element of the modified main stream, and encapsulating at least one segment with at least one piece of access information in at least one data block to generate at least one access ticket for corresponding audiovisual elements, wherein the at least one access ticket includes a header comprising the access information; and transmitting the modified main stream and the complementary information to receiver equipment, to enable recomposing the modified main stream and the complementary information into the original stream format at the receiver equipment; wherein the access tickets are encrypted with at least one group of keys, wherein the at least one group of keys is stored in a secure memory on a receiver side, wherein groups of keys are different for at least two different receivers of a group of receivers.