Method and arrangement for personalized video encoding

An apparatus including:

• an encoding apparatus for generating an encoded common video stream and at least one encoded intermediate stream;
• said encoding apparatus being adapted to receive a common video stream and at least one input stream of personalized information;
• said encoding apparatus further including at least one mixer for mixing said common video stream and said at least one input stream for thereby generating at least one intermediate stream;
• said encoding apparatus further including at least one encoder for encoding said at least one intermediate stream into said at least one encoded intermediate stream;
• wherein said at least one mixer is adapted to generate said at least one intermediate stream by adding said at least one input stream in predetermined positions of said common video stream, taking into account a macroblock grouping in slices;
• said encoding apparatus further includes a further encoder for encoding said common video stream using said macroblock grouping, for thereby generating an encoded common video stream comprising a sequence of encoded video frames, such that each encoded video frame comprises a sequence of a predetermined number of slices of encoded macroblocks of said common video stream;
• said at least one encoder is further adapted to encode said at least one intermediate stream, by using said macroblock grouping, so as to generate said at least one encoded intermediate stream comprising a sequence of frames of said predetermined number of slices of encoded macroblocks of said at least one intermediate video stream.