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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have been watching the threads here for quite some time
while I contemplate building my MythTV box. One of the most import issues
for me is HDTV support, and preferably QAM support so that I can get my HDTV
signals from cable. Anyway from what I can see there doesn’t appear
to be a currently available HDTV turner for Linux that supports QAM. I
was interested in the Sasem OnAir USB tuner since it tunes ATSC and QAM as well
as provides a MPEG2 encoding chip for analog channels. I contacted Sasem
and they tell me that they currently have Linux driver support on the roadmap
but don’t expect beta level drivers until at the earliest Q2 2005, so at
the moment it looks like my only choice is the HD-3000.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Anyway sine the HD-3000 isn’t currently available I
have some time before I start to build my box. One question I have is
about how MythTV handles channels with similar content. I plan to put
some sort of HDTV tuner in my box as well as 2 PVR-250s that will be receiving content
via DirecTV, and basic analog cable respectively. Is it possible to stack
the channels on top of each other with preferred tuning devices?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>For example I will have 3 input sources all of which will
have the local CBS channel 62 available. What I am curious about doing is
setting up the system so that there is only one Channel 62. If I tune to
the channel I would prefer to use the HDTV card first but if that is busy
recording a program fall over to one of the analog tuners, preferring cable 1<sup>st</sup>
and then satellite. Likewise when scheduling recordings, I would prefer to
record from HDTV tuner first and then fall over to analog tuners if I have no
other choice. Actually in a perfect world it would be great if MythTV
knew that one tuner was HDTV capable and then only used that tuner for content
that is flagged as being HDTV in the program guide, but I am guessing that sort
of beyond the current functionality.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>In order to do this, I would need to map channels from the
different tuners to one unified “virtual” channel guide and again
this is something I don’t know is possible (I couldn’t find any
similar setups in Gossamer-threads or in Google, though maybe I don’t know
what keywords to search for). I would prefer to use the DirecTV guide as
my starting point but have a method of hiding the fact that Channel 62 one
DirecTV is actually channel 15 on cable and channel 44 on HDTV. It seems
that it should be logically possible since my HDTV content is a subset of my
cable channels and my basic cable channels are a subset of my DirecTV channels.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Any information on how to setup something like this would be
very much appreciated. I have played with MythTV briefly and if I can
iron out these sort of issues I think I am ready to build my dedicated box. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:City w:st="on"><st1:place w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Shelby</span></font></st1:place></st1:City><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
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