[mythtv-users] HDTV with Comcast

[Jarod C. Wilson]

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On Wednesday 24 March 2004 14:17, Kyle Rose wrote:
> "Jim Wilhelm" <skillz9981 at hotmail.com> writes:
> > Very new here to the MythTV realm.  I am in the process of building
> > my myth box and I have a Comcast digital cable subscription with
> > HDTV.  How do I get the HD signal to pass thru the Myth box
>
> I think the first step might be to talk to your Congressman.  Under
> current law, you have no right to fair use of cable transmissions, as
> decrypting the HDCP signal most likely coming out of your Comcast box
> would be an illegal act under the DMCA, if you could even find a
> DVI-in card for your computer and figure out some way of decrypting
> it.
>
> Please feel free to join us: the club of Americans SOL with respect to
> non-OTA high definition television.  I bought a pcHDTV card for OTA
> HDTV broadcasts, but it works only with unencumbered ATSC, a format
> most digital cable providers are unwilling or unable (under contract)
> to offer.

There's a little more to it than that. OTA HD uses 8VSB modulation, cable uses 
QAM. Most HD tuners only support one or the other, and the only viable HDTV 
tuner for Linux only supports 8VSB. Even an "unencumbered ATSC" signal over 
cable isn't going to help you, until you come up with a card that supports 
QAM.

Long story short, you aren't going to get the HDTV signal from Comcast onto 
you Myth box anytime soon, if ever. For reference, I have both a pcHDTV card 
and Comcast with a DCT5100 HD cable box.

- -- 
Jarod C. Wilson, RHCE

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