[mythtv-users] Can't simultaneously record two programs with 3 (or 4) available tuners v2

Karl Newman newmank1 at asme.org
Tue Oct 15 23:04:42 UTC 2013


On Tue, Oct 15, 2013 at 3:43 PM, Leif Pihl <leif at pihl.us> wrote:

> Below...
>
>
> On Oct 15, 2013, at 10:28 AM, George Nassas wrote:
>
> On 2013-10-15, at 9:06 AM, Eric Sharkey wrote:
>
> he's posted about a problem he's having, and you posted a solution
> to a different problem
>
>
> Well, if he defined the tuner as one device and linux switches it to a
> different one it would explain why he only has one tuner available. In any
> case having the tuner devices rearranged at random intervals doesn’t help
> when he already has trouble seeing how cards, physical tuners and myth
> tuners interact.
>
> My basic approach is fix big problems first, medium second, and small
> last. When I was putting together my identical setup I found tuner
> rearrangement to be a big problem so that’s why I focus there first.
> Another biggie is what’s available on his cable connection, I thought
> comcast was dickish about encrypting everything so maybe there isn’t
> anything to record from the cable and hence a question there.
>
> - George
>
>
>
> I've still taken little or no action, still reading
> but
> I can tell you a little more about the CATV service.
> We had what was called "Antenna Service"; i.e.: NO WHERE NEAR what most
> people call "Basic Service".
> It had channels 2 through 12 plus a variety of higher numbered channels
> that were things like CNN, CSPAN, Community Access and other crap.
>
> THEN
>
> Comcast told us we had to connect our old NTSC glass-tubed sets to these
> converter boxes because the network was going digital.
> We did that.  It seems like the "after" is all the same channels, plus a
> few other ones that I don't care about.
>

This is important. This means your digital tuners are useless. Comcast
almost certainly gave you what are called DTAs (digital transport
adapters), which decrypt the cable signal for the selected channel and
output an analog NTSC signal on channel 3 or 4. Or, if they gave you the
HD-DTAs, it outputs on HDMI and you can't do any recording with that
(legally). So your best bet is to get your analog tuner(s) working with the
DTAs. You'll need one DTA to match with each analog tuner you want to
record at the same time, and an IR blaster for each DTA as well, to change
the channel.

Karl
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