[mythtv-users] Re: recording HD content
Michael T. Dean
mtdean at thirdcontact.com
Thu May 5 01:23:24 UTC 2005
Brad Templeton wrote:
>On Wed, May 04, 2005 at 11:10:01AM -0400, Joseph A. Caputo wrote:
>>Now I'm confused... are you saying that the cable co. is allowed to
>>encrypt or downres firewire output even for 'broadcast equivalent'
>>channels, and that only the raw QAM signal for such channels must be
>>available in the clear?
>Dunno about down-res, but they are allowed (and expected to) use the
>DTCP (5C) protocol on the 1394 port in the cable box. This protocol
>has the cable box talk to the receiving end and confirm that it also
>speaks DTCP, which only happens if it has pledged not to let the
And if the device connected to the 1394 port (or any other digital port)
is not recognized as DTCP-compliant, any broadcast-flag protected
content output over the port *must* be down-res'ed to no higher than 480p.
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