[mythtv-users] HDTV reception via Cable

John P Poet jppoet at gmail.com
Thu Mar 9 06:11:15 UTC 2006


On 3/8/06, Jesse Guardiani <jesse at wingnet.net> wrote:
> On Thursday 09 March 2006 12:42 am, Jerry Rubinow wrote:
> > The PVR-XXX can deal with the straight coax, so you'd have all the
> > analog channels available at once, multiplexed together, and the tuner
> > on the PVR would select which one was being digitized.  With the
> > firewire, you're using the cable box's tuner and only getting a single
> > channel over the wire.  In this case, the firewire is a two way
> > connection, able to tell the cable box to change the channel it's
> > sending.  For a coax connection to a PVR, you're not even dealing with
> > the tuner on the cable box.
> >
> > However, the PVR-XXXs also have an S-Video input available, in which
> > case you could use it to receive the S-Video output from the cable
> > box.  In this case, you would be using the cable box's tuner and could
> > use the 6200ch program, which tells the cable box to change channels
> > using the firewire.  The advantage to using S-Video would be a cleaner
> > signal.  The disadvantage is that you couldn't record two different
> > channels at the same time, since both s-video and firewire would be
> > relying on the cable box's tuner.
>
> That's a good point. I'm beginning to wonder if my PCI bus can handle
> recording SD + HD at the same time, writing the streams to my software
> 2 SATA disks in RAID-1, and playing back HD from the same array at
> the same time...
>
> Anyone running something similar on a 66mhz 32bit PCI bus?
> Does it work? :)
>

I have two HD-3000 cards, a PVR-500 and a 4 port Promise SATA
controller in my system.  I can record using all four tuners
simultaneously onto a 5 disk Raid5, without any problems.

John


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