Video stream watermarking method for digital TV receiver, involves selecting macroblock of image not serving as reference, replacing macroblock not serving as reference by macroblock coding identification information

摘要

The method involves coding identification information under the form of macroblocks of video images (B2, B3, B5-B7, L1, P4, P8) of a video stream. An image including a macroblock not serving a reference for decoding the following and preceding images of the video stream is identified among the video images on fly in the video stream. The macroblock not serving as the reference is selected, the macroblock not serving as the reference is replaced by the macroblock coding the identification information. Independent claims are also included for the following: (1) a program comprising instructions to perform a method for marking video stream (2) an installation for marking video stream (3) a digital TV receiver comprising a common interface port and an expansion card.