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How to properly configure identical but time shifted channels?

 

 

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shawn.asmussen at gmail

Jul 9, 2010, 2:13 PM

Post #1 of 2 (226 views)
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How to properly configure identical but time shifted channels?

The way that my cable provider lineup works is that the SD versions of
channels are generally from the pacific feeds, but the high definition
versions of the channels sometimes sometimes also use the Pacific schedule,
lining up perfectly with the programming on the SD version of the channel,
but sometimes use the east coast schedule, and have the same programming,
but offset from the SD version of the channel by 3 hours. What is the
correct way to setup the callsigns for the channels in this case for proper
scheduling to occur? The way I currently have it setup, I have changed the
callsigns of the channels with schedules that line up to be the same, but
left the callsigns on the channels with 3 hour offsets alone. For example,
the way that CNN and SCIFI come down to me from schedules direct is like
this:

36 CNN
50 SYFYP
736 CNNHD
750 SYFYHD

CNN has the exact same timeslots for every program regardless of whether
it's the SD or HD version of the channel, so I editted the callsign for
channel 736 to be 'CNN', matching the SD channel. However, SYFYHD uses the
east coast scheduling, with the same exact programming, but 3 hours offset.
For that channel, I have the callsigns the way they come down from
schedulesdirect, with each channel having it's own unique callsign.
(Actually, I editted them to SCIFIP and SCIFIHD, because I think the new
'SYFY' name is absolutely ridiculous, but that's another matter altogether.)
My question is basically whether or not I have this setup the way I should.
Is this the normal way of handling time shifted but otherwise duplicate
channels, or is the mythtv scheduler actually capable of understanding the
time offset of the channels, and would function better if I actually were to
make the callsigns for 50 and 750 identical as well?



Shawn Asmussen


ylee at pobox

Jul 9, 2010, 3:15 PM

Post #2 of 2 (200 views)
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Re: How to properly configure identical but time shifted channels? [In reply to]

Shawn Asmussen <shawn.asmussen [at] gmail> says:
> What is the correct way to setup the callsigns for the channels in
> this case for proper scheduling to occur?

I use the same naming method myself, which originated from Tribune
Media, the owner of the data SchedulesDirect distributes. As you
yourself imply by tweaking the Syfy channels' callsigns, callsigns can
be anything you want. The scheduler only uses callsigns to know which
channels are exactly the same (say, the CBS HD channel that is
available both over-the-air and cable for me), and which aren't, so it
can intelligently allocate tuners as needed. That's it. They are not
used for getting schedule data from ScheduleDirect; you could give the
Syfy channels the callsigns FRED and GINGER but as long as their
XMLTVIDs are correct they will get the proper data.

> or is the mythtv scheduler actually capable of understanding the
> time offset of the channels, and would function better if I actually
> were to make the callsigns for 50 and 750 identical as well?

The scheduler is in fact capable of shifting a channel's schedule data
to accomodate time-zone differences; see mythtv-setup.

In this case, though, setting aside the Pacific/Eastern shift, the
channels aren't the same; one offers programs marked with the HD flag
and the other doesn't. Look at your lineup and you will see that the
two channels' XMLTVIDs--the codes that mythfilldatabase uses to match
MythTV's channels with those on SchedulesDirect--are different. This
holds for CNN and CNNHD, too. While nothing stops you from using the
same XMLTVID and callsign for the SD and HD versions of CNN, you run
the risk of a) the HD flag, or lack thereof, causing inaccurate
priority weightings and custom-recording rules, and b) the two
channels' lineups someday being genuinely different.

I never use SD channels if HD versions are available, so mark them as
not visible from within MythTV.

--
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More answers @ <URL:http://www.gossamer-threads.com/lists/mythtv/>
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