Combined video de-synchronization and compression method applicable to collusion-resilient fingerprint, and corresponding encoding device and encoded video stream

摘要

In a combined video de-synchronization and compression method for processing a raw video stream comprising a first sequence of successive raw video frames in order to obtain a resulting processed video stream comprising a second sequence of coded frames, the successions of a first phase of selecting frames to be space and/or time-de-synchronized and allocating to each selected frame a category such as I-frame, P-frame, P-frame or F-frame (for "fractional") with reference to known motion compensated and transform hybrid coding standards such as MPEG-2 or the H-264 compression standard; and a second phase of a single one-stroke processing of said raw video stream consisting of processing successively the frames selected with a combined time de-synchronization and compression process using a common motion estimation processing step. The method is particularly suited to video fingerprinting by blind watermarking.