A new protection for audio-video content appeared: it is called Cinavia. It is reported to be used for protection of movie from theaters and disc releases on DVD & Blu-ray. 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, pitch shift, etc. The base levels are analog, but on the top level there's the watermark payload that contains some restrictions regarding the playback environment.
The protection has two elements (one cannot work without the other):
1. The watermark embedded in audio-video content.
2. Cinavia enabled player, that will refuse to play the content if it does not match the restrictions.
Examples:
1. A movie copy made with a camcorder in a theater that contains Cinavia (THEATRICAL_NO_HOME_USE) watermark will stop playing within about 1 minute on a Playstation 3 and display a Message 1.
2. An unprotected (no AACS) Blu-ray backup of "The Losers" (US release) will mute the audio after about 20 minutes with Message 3 (for not coming from a TRUSTED_SOURCE).
Blu-ray discs:
The Losers *(Warner Brothers, volume name=THE_LOSERS) (English track only)
The Karate Kid (2010)* (Sony, volume name=THE_KARATE_KID) (most of the tracks)
The Other Guys (Sony, 14dec2010) (English track only)
Resident Evil: Afterlife 2D* (Sony, 28dec2010) (English track only)
Resident Evil: Afterlife 3D* (Sony, 28dec2010) (English track only)
Salt (Sony, 21dec2010) (English track only)
The Social Network (Sony, 11jan2011) (English track only)
Takers (Sony, 18jan2011) (English track only)
Burlesque (Sony, 01mar2011)
The Tourist (Sony, 22mar2011)
How Do You Know (Sony, 22mar2011)
* for those, in teritories where the movie is not released by Warner Bros. or Sony, the Blu-ray does not have Cinavia
DVD discs:
Takers (Sony, 18jan2011) (English track only)
Burlesque (Sony, 01mar2011)
The Tourist (Sony, 22mar2011)
Blu-ray/media players that use Cinavia:
Sony Playstation 3 (PS3) firmware 3.10 or higher
I do not know if Sony has also implemented Cinavia in the S5000ES/S550/S350 in firmware version 024.