[mythtv-users] PVR-350 + PVR-350 or PVR-350 + PVR-250

[Jarod C. Wilson]

On Jan 15, 2004, at 12:02 AM, Andrew Dodd wrote:

> Quoting Jeff Mottishaw <jmot at mottie.com>:
>
>>>> Is there a recommended approach to recording/watching cable company
>>>> supplied HDTV with Myth?
>>
>>> There's no way to do it (at least not yet).
>>
>> Can't you use an IR Blaster, and the component output (I'm assuming it
>> has one) of the Comcast box to get the HDTV channels?
> MPEG encoders that will take an HD component signal and compress it to 
> MPEG-2
> MP at HL in real time cost more money than almost anyone on this list has.

Maybe if I sell my house, my truck, my kid...

> The only way to capture HDTV on a PC is if you have access to the raw 
> bitstream
> somehow.  The options for this are:
>
> An HD tuner that has Firewire outputs.  These are sadly very rare.  
> The only one
> I can think of off the top of my head is one of the first RCA DirecTV 
> HD
> receivers with a modification installed by 169time.

My Motorola DCT-5100 also has a firewire output, but Comcast's firmware 
disables it (as well as all the other goodies, like USB, Ethernet, 
etc).

> A demodulator for whatever transmission standard is being used.  
> Readily
> available for ATSC, no cards exist that work with the QAM demodulation 
> used by
> digital cable.  (One wonders if it might be possible to reconfigure a 
> DVB card
> to do this - DVB also uses a QAM modulation scheme.)
>
> A device that demodulates the signal, and then remodulates the 
> bitstream in a
> different format.  i.e. the first-generation Dish Network HD receiver 
> with the
> ATSC modulator added.  That's the only such device I know of.
>
> Theoretically it would be possible to tap into the demodulated 
> bitstream from a
> cable box and then capture it.  A long time ago I remember seeing 
> someone on
> AVSforum that had tapped into the raw digital video output of his DVD 
> player
> just before the TV encoder and routed it to the GPIO pins of a Bt878.  
> I forget
> the name of the exact transmission standard...

Supposedly, the DCT-5100 can also have an internal hard drive, and 
there's an Ethernet port, so with a bit of work... ;-)

(No time to look into it right now though)

-- 
Jarod C. Wilson, RHCE

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