Method for inserting watermark assistance data in a bitstream, method of watermarking said bitstream, device implementing the method of watermarking and bitstream comprising the watermark assistance data

摘要

The invention relates to a method for inserting watermark assistance data (WSM) in a bitstream (F) of coded data comprising the step of inserting (12), in the bitstream, identification data identifying coded data to be substituted and, for each coded data to be substituted, at least one substitution data. The method further comprises a step of inserting (14) in the bitstream a format data defining a manner of substituting the coded data to be substituted by the substitution data.