A method of transmarking a watermarked media signal to adapt the watermark
to the robustness and perceptibility constraints of a new environment.
This transmarking method detects the first digital watermark in the media
signal. It then embeds message information from the first digital
watermark into a second digital watermark in the media signal before the
media signal undergoes a transformation process. The second digital
watermark is adapted to survive the transformation process. A variation
of this method detects the first digital watermark in the media signal,
converts the media signal to a different format, and embeds message
information from the first digital watermark into a second digital
watermark in the converted media signal. The second digital watermark is
adapted to robustness or perceptibility parameters associated with the
new format.