(A) The watermark embedded in audio-video content.The protection has two elements (one cannot work without the other): The base levels are analog, but on the top level there’s the watermark payload that contains some restrictions regarding the playback environment. It consists of a multi-level watermark that is embedded in the audio track and, while being theoretically transparent (not-audible) for the listener, it is supposed to resist various transformations of the audio stream like re-compression, analog playback & record, re-sampling, limited pitch shift, etc. Cinavia is a protection for movies in theaters and on DVD, Blu-ray & UHD discs.
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