Patent ID: 8903089

Claim:
A method of distributing video sequences in a coded stream including a succession of frames, each frame consisting of at least one Intra coded sub-frame and at least one Prediction coded sub-frame corresponding to partial differences between at least two sub-frames of the succession of frames, comprising: analyzing an original coded stream prior to transmission to at least one destination device, generating the least one modified coded sub-frame representing a visual identification, generating, based upon the analysis, a modified stream and a second stream, wherein said modified stream is obtained by replacing an original coded sub-frame by the modified coded sub-frame comprising a modified Prediction coded image that is a randomly generated image or the result of swamping two Prediction coded images, so that the modification from said at least one original coded sub-frame results in a visually altered video sequence, said modified stream preserves the form for an encoding system applied to said original coded stream, and said second stream including the original coded sub-frame that allows a reconstruction from said modified stream to said original coded stream; transmitting the first and the second generated streams from a server to the destination device; and reconstructing the original stream by extracting from the modified stream the modified coded sub-frame by the original coded sub-frame contained in the second stream.