Patent ID: 8873634

Claim:
A method for modification of an encoded data stream of data packets of a video stream sent by a sending apparatus to a receiving apparatus, the data packets comprising first, second, third, fourth and fifth data packets wherein each data packet comprises one information bit in which information of sequential data packets exhibits time intervals from each other such that at least one time interval between sequentially sent data packets vary from a desired time interval, the method comprising: inserting an artificially encoded; sixth data packet into the encoded data stream in an encoded domain temporally after the second data packet, the sixth data packet artificially encoded to reference an image of the second data packet such that data content of the sixth data packet repeats data content of the second data packet; and removing the fourth data packet present in the encoded data stream from the encoded data stream such that the fourth data packet is not transmitted to the receiving apparatus when decoding of the fifth data packet does not depend on data content of the fourth data packet.