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I am reviving and old thread. It relates to an issue that is a
problem for me and will be an ever increasing problem as Cable
companies continue to adopt SDV.<br>
<br>
The problem: I have a QAM card and want to build a MythTV box
instead of using the cable company's (busted/worthless) DVR. The
cable company uses SDV, so QAM is limited to OTA locals.<br>
<br>
My solution: get a set top box from the cable company, hook it to my
MythTV. Use a External channel change script to change channels so
that the box is requesting the channel that I want. Then change the
channel on the QAM card to that channel.<br>
<br>
Let me know if there is a simpler solution (without buying
additional hardware).<br>
<br>
Here is the original issue from an old thread... Technically
similar to my issue.<br>
<br>
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<span class="Apple-style-span" style="color: rgb(0, 0, 0);
font-family: Verdana, Arial, Helvetica; font-style: normal;
font-variant: normal; font-weight: normal; letter-spacing: normal;
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widows: 2; word-spacing: 0px; -webkit-text-decorations-in-effect:
none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width:
0px; background-color: rgb(255, 255, 255); font-size: small; "><font
color="#660066">> Hi, I've been building my dream<span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(255, 255, 128); ">MythTV</b><span
class="Apple-converted-space"> </span>setup for several months
and knocking<span class="Apple-converted-space"> </span><br>
> off one issue at a time, but this one has me stumped.<span
class="Apple-converted-space"> </span><br>
><span class="Apple-converted-space"> </span><br>
> My backend has a couple of pcHDTV HD-5500 cards and a
Haupauge PVR-350. I<span class="Apple-converted-space"> </span><br>
> plan to use the HD-5500's to receive OTA HD, and connect
the PVR-350 to my<span class="Apple-converted-space"> </span><br>
> old DirecTV box. I just put up a new antenna and<span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(170, 255, 170); ">Channel</b><span
class="Apple-converted-space"> </span>Master 9521A<span
class="Apple-converted-space"> </span><br>
> rotor. This rotor has a remote and can be programmed to
move to a<span class="Apple-converted-space"> </span><br>
> predefined direction. (I live in the boondocks of NW Ohio
and am 60+ miles<span class="Apple-converted-space"> </span><br>
> from any major TV towers, so I need to move the antenna to
get a strong<span class="Apple-converted-space"> </span><br>
> signal.) I have created a script ( Antenna_GoToChannel.sh )
to run an IR<span class="Apple-converted-space"> </span><br>
> Blaster to<span class="Apple-converted-space"> </span><b
style="color: black; background-color: rgb(255, 170, 170); ">change</b><span
class="Apple-converted-space"> </span>the antenna to the
proper preset position. It works great<span
class="Apple-converted-space"> </span><br>
> from the command line.<span class="Apple-converted-space"> </span><br>
><span class="Apple-converted-space"> </span><br>
> Now I wanted to have<span class="Apple-converted-space"> </span><b
style="color: black; background-color: rgb(255, 255, 128); ">MythTV</b><span
class="Apple-converted-space"> </span>call my script when I
changed channels, but I<span class="Apple-converted-space"> </span><br>
> see no "<b style="color: black; background-color: rgb(170,
170, 255); ">External</b><span class="Apple-converted-space"> </span><b
style="color: black; background-color: rgb(170, 255, 170); ">channel</b><span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(255, 170, 170); ">change</b><span
class="Apple-converted-space"> </span>command" for the HD-5500
cards, only for the<span class="Apple-converted-space"> </span><br>
> PVR-350.<span class="Apple-converted-space"> </span><br>
><span class="Apple-converted-space"> </span><br>
> I searched the Archives on Gossamer and someone said there
was none for<span class="Apple-converted-space"> </span><b
style="color: black; background-color: rgb(170, 255, 255); ">DVB</b><span
class="Apple-converted-space"> </span><br>
> cards, only V4L cards.<span class="Apple-converted-space"> </span><br>
><span class="Apple-converted-space"> </span><br>
> So I have two questions:<span class="Apple-converted-space"> </span><br>
><span class="Apple-converted-space"> </span><br>
> 1) Is there really no place to call my script, or am I
missing<span class="Apple-converted-space"> </span><br>
> something?<span class="Apple-converted-space"> </span><br>
><span class="Apple-converted-space"> </span><br>
> 2) If not, why? Not complaining, I just want to understand.<span
class="Apple-converted-space"> </span><br>
><span class="Apple-converted-space"> </span><br>
> Thanks, Keith<span class="Apple-converted-space"> </span><br>
><span class="Apple-converted-space"> </span><br>
</font>You won't see any<span class="Apple-converted-space"> </span><b
style="color: black; background-color: rgb(170, 255, 170); ">channel</b><span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(255, 170, 170); ">change</b><span
class="Apple-converted-space"> </span>scripts for<span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(170, 255, 255); ">DVB</b><span
class="Apple-converted-space"> </span>cards since, as they are<span
class="Apple-converted-space"> </span><br>
plugged into the computer which is running the back end,<span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(255, 255, 128); ">Mythtv</b><span
class="Apple-converted-space"> </span>can<span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(255, 170, 170); ">change</b><span
class="Apple-converted-space"> </span>the<span
class="Apple-converted-space"> </span><br>
<b style="color: black; background-color: rgb(170, 255, 170); ">channel</b><span
class="Apple-converted-space"> </span>directly. Providing, of
course, it knows which card it is, and you<span
class="Apple-converted-space"> </span><br>
specified that, anyway, in the setup procedure.<span
class="Apple-converted-space"> </span><br>
<br>
If Mythbackend sees an<span class="Apple-converted-space"> </span><b
style="color: black; background-color: rgb(170, 170, 255); ">external</b><span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(170, 255, 170); ">channel</b><span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(255, 170, 170); ">change</b><span
class="Apple-converted-space"> </span>script in the settings, it
will<span class="Apple-converted-space"> </span><br>
assume that you are using some kind of<span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(170, 170, 255); ">external</b><span
class="Apple-converted-space"> </span>box, and thus won't need
to<span class="Apple-converted-space"> </span><br>
<b style="color: black; background-color: rgb(255, 170, 170); ">change</b><span
class="Apple-converted-space"> </span>the<span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(170, 255, 170); ">channel</b><span
class="Apple-converted-space"> </span>of the internal tuner. For
example, with a PVR-350, you can<span
class="Apple-converted-space"> </span><br>
plug the output of a set top box (or satellite tuner, etc) into
the S-Video<span class="Apple-converted-space"> </span><br>
input. That's probably why you find references to PVR-350 and<span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(170, 170, 255); ">external</b><span
class="Apple-converted-space"> </span><b style="color: black;
background-color: rgb(170, 255, 170); ">channel</b><span
class="Apple-converted-space"> </span><br>
<b style="color: black; background-color: rgb(255, 170, 170); ">change</b><span
class="Apple-converted-space"> </span>scripts.<span
class="Apple-converted-space"> </span><br>
<br>
As far as I know, you have an unusual setup. I suspect that the
main response<span class="Apple-converted-space"> </span><br>
you will get here will be to install another aerial, and connect
it to a second<span class="Apple-converted-space"> </span><br>
HD-5500 card.<span class="Apple-converted-space"> </span><br>
<br>
However, it is possible that someone else may have another
solution to your<span class="Apple-converted-space"> </span><br>
problem which won't involve buying more hardware.<span
class="Apple-converted-space"> </span></span><br>
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