[mythtv-users] DVICO FusionHDTV III QAM card

[Jay R. Ashworth]

On Thu, Aug 19, 2004 at 07:06:35AM -0400, Cory Papenfuss wrote:
>   They are basically RF frontends and 8VSB/QAM hardware demod
> boards... basically just a modem. Whatever bits come in over the air
> are spewed out the PCI bus.

That's what I'm hopin.

> > I think what Michael is saying is that if the channel were, in fact,
> > encrypted, the signal received over the bus would not be an MPEG
> > stream, so when it's passed to a software MPEG decoder, the decoder
> > would not be able to decode the video. In other words, he's agreeing
> > with your initial guess of how to tell it's encrypted.
>
>   I'm not sure which part of the video is encrypted, but I would
> suspect it's at the PS (Program stream) level. Remember that an
> MPEG-TS (Transport stream) can contain lots of different PS's and at
> the same time. I'm sure that they could encrypt on a per-PS basis so
> the framing of the bits coming down in the TS would be readable. If
> you tried to decode the content of a PS, however, it would be like
> issuing 'mplayer /dev/urandom'

What, Cory; you don't know?  There's some really great porn in
/dev/urandom.  :-)

Cheers,
-- jra
-- 
Jay R. Ashworth                                                jra at baylink.com
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	"You know: I'm a fan of photosynthesis as much as the next guy,
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