That's interesting, but the content protection systems on the cable are proprietary and follow their own rules. There's a protection mode in DTCP--the copy protection system for Firewire A/V connections--called "Encryption Plus Non-assertion" (EPN). It required that content so marked be transferred in encrypted form though there was no restriction on copying it. If the receiving device made a copy of the stream, it had to be saved in an approved encrypted form and marked such that upon playback it would be also be marked "EPN". The intent was for the content to be protected without restraining the number of copies made. It was for support of the now-defunct "Broadcast Flag". IPPV and VOD (the pay-per-viewing-period kind) are the only two business models that the FCC's encoding rules allow to be marked "Copy Never". Code of Federal Regulations Title 47, §76.1904: I'm fairly sure that copy-protection flags can be embedded in MPEG-2 Transport Streams.