> There's a company that claims to be able to stop this with some 
> peculiar
> watermarking techniques that destroy the copy from the cinema screen 
> to
> the video camera. Now owned by Dolby:

If you can see it, you can record it at that quality.
If you can hear it, you can record it at that quality.
There is no way of stopping a sensor that mimics the human eye/ear, 
without stopping the human eye/ear as well.

What you can do is develop systems that target the differences between 
the sensors in use and the human eye/ear. This does wonders for the 
development of accurate eye/ear emulating sensors. This process is 
traditionally known in the behavioural 'sciences' as an "arms race".



        Russell




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