[mythtv-users] Answers about pcHDTV HD-3000 support in Myth,
QAM support, and more
Joseph A. Caputo
jcaputo1 at comcast.net
Tue Oct 19 17:54:45 UTC 2004
On Tuesday 19 October 2004 13:33, Cory Papenfuss wrote:
> > Thanks for the FAQ! One thing I'm still a little unclear on: on
> > the HD-2000/3000 does the NTSC tuner work as a simple framegrabber
> > (i.e., I must encode in software), or does it produce MPEG encoded
> > output like the PVR-250? The ATSC stuff is already MPEG as
> > broadcast, right?
> >
> > Tx,
>
> The NTSC part is a simple software-based V4L device that uses a
> newer revision of the BT8x8 chipset. The ATSC is best thought of as
> a 1-way modem... because that's what it is. It just takes the RF
> signal, downconverts it to baseband, then demodulates it into the
> broadcast MPEG stream and spews it over the PCI bus.
...so, under Myth, does that mean the card would be configured as two
separate devices? i.e., /dev/video0 for the ATSC feed, and /dev/video1
as a standard V4L tuner? If that's the case, can both be used
simultaneously?
-JAC
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