Mailing List Archive: MythTV: Users

Dual tuner info

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khanh at slc

Apr 22, 2004, 11:20 AM

Post #1 of 24 (10766 views)
Permalink

Dual tuner info

Can someone point me in the direction of good instructions on dual tuner
setups? It seems like an obscure thing to find. I have them working OK
so far, but the EPG shows two copies of the channel. Also, depending on
which one you choose, the backend will come back with an error saying
that the tuner is in use if you choose two programs in the same timeslot
to record. While this isn't a problem for me, the WAF will be low on
remembering "which" of the two EPG items to choose...

Thanks to all!

-Khanh Tran

poobah at techsquadron

Apr 22, 2004, 11:48 AM

Post #2 of 24 (10526 views)
Permalink

RE: Dual tuner info [In reply to]

I had a similar problem when I had 2 separate Video Sources defined, one
for the cable box and one for basic cable without the digital channels.
I re-configured it with a single Video Source, and then tied the 2 cards
to that 1 source. Now, I only get 1 copy of the channels in the EPG. I
had to get a second cable box to make the two inputs identical, though.

Mark Hanson
poobah[at]techsquadron.com

-----Original Message-----
From: Khanh Tran [mailto:khanh[at]slc.edu]
Sent: Thursday, April 22, 2004 12:20
To: Discussion about mythtv
Subject: [mythtv-users] Dual tuner info

Can someone point me in the direction of good instructions on dual tuner
setups? It seems like an obscure thing to find. I have them working OK
so far, but the EPG shows two copies of the channel. Also, depending on
which one you choose, the backend will come back with an error saying
that the tuner is in use if you choose two programs in the same timeslot
to record. While this isn't a problem for me, the WAF will be low on
remembering "which" of the two EPG items to choose...

Thanks to all!

-Khanh Tran

jcw at wilsonet

Apr 22, 2004, 12:50 PM

Post #3 of 24 (10538 views)
Permalink

Re: Dual tuner info [In reply to]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Thursday 22 April 2004 11:20, Khanh Tran wrote:
> Can someone point me in the direction of good instructions on dual tuner
> setups? It seems like an obscure thing to find. I have them working OK
> so far, but the EPG shows two copies of the channel.

That means you set up two separate channel sources for each tuner. If they are
for the same source, just assign that sources to both tuners.

> Also, depending on
> which one you choose, the backend will come back with an error saying
> that the tuner is in use if you choose two programs in the same timeslot
> to record. While this isn't a problem for me, the WAF will be low on
> remembering "which" of the two EPG items to choose...

Go back into setup, clear out your epg, delete the second video source, assign
the first one to both tuner inputs.

- --
Jarod C. Wilson, RHCE
jcw[at]wilsonet.com

Got a question? Read this first...
http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
http://wilsonet.com/mythtv/
MythTV Searchable Mailing List Archive
http://www.gossamer-threads.com/archive/MythTV_C2/
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khanh at slc

Apr 22, 2004, 12:55 PM

Post #4 of 24 (10529 views)
Permalink

RE: Dual tuner info [In reply to]

On that note, couldn't I just be more careful about what I schedule?
For example, could I set both cards to the single video source, and only
schedule simultaneous recordings on channels I know I can receive on
both tuners? Are there any issues I'm forgetting, like how live TV
would behave if it decided to record on the source with more channels
and then I attempt to watch live TV on a digital channel?

Thanks...

-Khanh

-----Original Message-----
From: Poobah [mailto:poobah[at]techsquadron.com]
Sent: Thursday, April 22, 2004 2:48 PM
To: khanh[at]khanh.net; Discussion about mythtv
Subject: RE: [mythtv-users] Dual tuner info

I had a similar problem when I had 2 separate Video Sources defined, one
for the cable box and one for basic cable without the digital channels.
I re-configured it with a single Video Source, and then tied the 2 cards
to that 1 source. Now, I only get 1 copy of the channels in the EPG. I
had to get a second cable box to make the two inputs identical, though.

Mark Hanson
poobah[at]techsquadron.com

-----Original Message-----
From: Khanh Tran [mailto:khanh[at]slc.edu]
Sent: Thursday, April 22, 2004 12:20
To: Discussion about mythtv
Subject: [mythtv-users] Dual tuner info

Can someone point me in the direction of good instructions on dual tuner
setups? It seems like an obscure thing to find. I have them working OK
so far, but the EPG shows two copies of the channel. Also, depending on
which one you choose, the backend will come back with an error saying
that the tuner is in use if you choose two programs in the same timeslot
to record. While this isn't a problem for me, the WAF will be low on
remembering "which" of the two EPG items to choose...

Thanks to all!

-Khanh Tran

khanh at slc

Apr 22, 2004, 12:57 PM

Post #5 of 24 (10551 views)
Permalink

RE: Dual tuner info [In reply to]

I do have two sources because I have one from the digital cable box and one straight from cable. I just posted another email about using the digital source on both cards even though one obviously can't tune the higher channels. Any thoughts on those issues?

-Khanh

-----Original Message-----
From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
Sent: Thursday, April 22, 2004 3:50 PM
To: khanh[at]khanh.net; Discussion about mythtv
Subject: Re: [mythtv-users] Dual tuner info

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Thursday 22 April 2004 11:20, Khanh Tran wrote:
> Can someone point me in the direction of good instructions on dual
> tuner setups? It seems like an obscure thing to find. I have them
> working OK so far, but the EPG shows two copies of the channel.

That means you set up two separate channel sources for each tuner. If they are for the same source, just assign that sources to both tuners.

> Also, depending on
> which one you choose, the backend will come back with an error saying
> that the tuner is in use if you choose two programs in the same
> timeslot to record. While this isn't a problem for me, the WAF will
> be low on remembering "which" of the two EPG items to choose...

Go back into setup, clear out your epg, delete the second video source, assign the first one to both tuner inputs.

- --
Jarod C. Wilson, RHCE
jcw[at]wilsonet.com

Got a question? Read this first...
� � �http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
� � �http://wilsonet.com/mythtv/
MythTV Searchable Mailing List Archive
� � �http://www.gossamer-threads.com/archive/MythTV_C2/
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james at orrwhat

Apr 22, 2004, 1:42 PM

Post #6 of 24 (10521 views)
Permalink

Re: Dual tuner info [In reply to]

On Thu, 2004-04-22 at 15:50, Jarod C. Wilson wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Thursday 22 April 2004 11:20, Khanh Tran wrote:
> > Can someone point me in the direction of good instructions on dual tuner
> > setups? It seems like an obscure thing to find. I have them working OK
> > so far, but the EPG shows two copies of the channel.
>
> That means you set up two separate channel sources for each tuner. If they are
> for the same source, just assign that sources to both tuners.
>
> > Also, depending on
> > which one you choose, the backend will come back with an error saying
> > that the tuner is in use if you choose two programs in the same timeslot
> > to record. While this isn't a problem for me, the WAF will be low on
> > remembering "which" of the two EPG items to choose...
>
> Go back into setup, clear out your epg, delete the second video source, assign
> the first one to both tuner inputs.

So there's no way you can tell myth that a channel in one source is the
same as a channel in another? I'm not in this situation yet, but I
forsee I will be in the future.

My ultimate goal is to have three tuners, two for my DCT boxes and a
third with regular cable.

So, for the first two, no problem, just set the same source as they are
identical.

The third presents a problem as just adding another basic cable source
would result in duplicate channels ... unless ... and i'm basically
working this out as I type here so bear with me ...

Listing #1: Digital Cable with all basic channels removed
Listing #2: Basic Channels

Tuner #1:
Composite Input -> Listing #1
Television Input -> Listing #2

Tuner #2:
Composite Input -> Listing #1
Television Input -> Listing #2

Tuner #3:
Television Input -> Listing #2

This would probably make a bit of a cable nightmare at the back and may
require a few cable splitters to setup.

MythTV is smart enough to know that it can't record the television input
of tuner 1 if it's using the composite already, right? Would this work?

--
James Orr <james[at]orrwhat.net>

brumple at VALUBOND

Apr 22, 2004, 3:04 PM

Post #7 of 24 (10518 views)
Permalink

RE: Dual tuner info [In reply to]

That is exactly what I am doing now and everything is working good.

-----Original Message-----
From: mythtv-users-bounces[at]mythtv.org
[mailto:mythtv-users-bounces[at]mythtv.org] On Behalf Of James Orr
Sent: Thursday, April 22, 2004 4:42 PM
To: Discussion about mythtv
Subject: Re: [mythtv-users] Dual tuner info

On Thu, 2004-04-22 at 15:50, Jarod C. Wilson wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Thursday 22 April 2004 11:20, Khanh Tran wrote:
> > Can someone point me in the direction of good instructions on dual
> > tuner setups? It seems like an obscure thing to find. I have them
> > working OK so far, but the EPG shows two copies of the channel.
>
> That means you set up two separate channel sources for each tuner. If
> they are
> for the same source, just assign that sources to both tuners.
>
> > Also, depending on
> > which one you choose, the backend will come back with an error
saying
> > that the tuner is in use if you choose two programs in the same
timeslot
> > to record. While this isn't a problem for me, the WAF will be low
on
> > remembering "which" of the two EPG items to choose...
>
> Go back into setup, clear out your epg, delete the second video
> source, assign
> the first one to both tuner inputs.

So there's no way you can tell myth that a channel in one source is the
same as a channel in another? I'm not in this situation yet, but I
forsee I will be in the future.

My ultimate goal is to have three tuners, two for my DCT boxes and a
third with regular cable.

So, for the first two, no problem, just set the same source as they are
identical.

The third presents a problem as just adding another basic cable source
would result in duplicate channels ... unless ... and i'm basically
working this out as I type here so bear with me ...

Listing #1: Digital Cable with all basic channels removed Listing #2:
Basic Channels

Tuner #1:
Composite Input -> Listing #1
Television Input -> Listing #2

Tuner #2:
Composite Input -> Listing #1
Television Input -> Listing #2

Tuner #3:
Television Input -> Listing #2

This would probably make a bit of a cable nightmare at the back and may
require a few cable splitters to setup.

MythTV is smart enough to know that it can't record the television input
of tuner 1 if it's using the composite already, right? Would this work?

--
James Orr <james[at]orrwhat.net>

khanh at slc

Apr 22, 2004, 3:41 PM

Post #8 of 24 (10532 views)
Permalink

RE: Dual tuner info [In reply to]

How does the EPG not display duplicate channels under that setup? Isn't
it an extension of the basic source1->input1, source2->input2 model?
There's still an input with a different set of sources than the other...

-Khanh

-----Original Message-----
From: Brian Rumple [mailto:brumple[at]VALUBOND.COM]
Sent: Thursday, April 22, 2004 6:05 PM
To: Discussion about mythtv
Subject: RE: [mythtv-users] Dual tuner info

That is exactly what I am doing now and everything is working good.

-----Original Message-----
From: mythtv-users-bounces[at]mythtv.org
[mailto:mythtv-users-bounces[at]mythtv.org] On Behalf Of James Orr
Sent: Thursday, April 22, 2004 4:42 PM
To: Discussion about mythtv
Subject: Re: [mythtv-users] Dual tuner info

On Thu, 2004-04-22 at 15:50, Jarod C. Wilson wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Thursday 22 April 2004 11:20, Khanh Tran wrote:
> > Can someone point me in the direction of good instructions on dual
> > tuner setups? It seems like an obscure thing to find. I have them
> > working OK so far, but the EPG shows two copies of the channel.
>
> That means you set up two separate channel sources for each tuner. If
> they are for the same source, just assign that sources to both tuners.
>
> > Also, depending on
> > which one you choose, the backend will come back with an error
saying
> > that the tuner is in use if you choose two programs in the same
timeslot
> > to record. While this isn't a problem for me, the WAF will be low
on
> > remembering "which" of the two EPG items to choose...
>
> Go back into setup, clear out your epg, delete the second video
> source, assign the first one to both tuner inputs.

So there's no way you can tell myth that a channel in one source is the
same as a channel in another? I'm not in this situation yet, but I
forsee I will be in the future.

My ultimate goal is to have three tuners, two for my DCT boxes and a
third with regular cable.

So, for the first two, no problem, just set the same source as they are
identical.

The third presents a problem as just adding another basic cable source
would result in duplicate channels ... unless ... and i'm basically
working this out as I type here so bear with me ...

Listing #1: Digital Cable with all basic channels removed Listing #2:
Basic Channels

Tuner #1:
Composite Input -> Listing #1
Television Input -> Listing #2

Tuner #2:
Composite Input -> Listing #1
Television Input -> Listing #2

Tuner #3:
Television Input -> Listing #2

This would probably make a bit of a cable nightmare at the back and may
require a few cable splitters to setup.

MythTV is smart enough to know that it can't record the television input
of tuner 1 if it's using the composite already, right? Would this work?

--
James Orr <james[at]orrwhat.net>

james at orrwhat

Apr 22, 2004, 4:07 PM

Post #9 of 24 (10518 views)
Permalink

RE: Dual tuner info [In reply to]

On Thu, 2004-04-22 at 18:41, Khanh Tran wrote:
> How does the EPG not display duplicate channels under that setup? Isn't
> it an extension of the basic source1->input1, source2->input2 model?
> There's still an input with a different set of sources than the other...

The key is to remove the basic channels from the digital listing (you'll
have to do it manually, instructions on removing channels are in the
documentation). The same channel would never be in both listings.

With this setup, it will use the composite input to record any digital
only (or premium) channels, then if it's going to record a basic channel
it will use the television input of either of the cards. It will never
use the cable box to view a basic channel as those channels have been
removed from the listing.

You would want any tuners with ONLY television input to take priority.
That way, if you're using two tuners and it starts recording a basic
channel, you will still have your digital channels available for live
tv.

--
James Orr <james[at]orrwhat.net>

poobah at techsquadron

Apr 22, 2004, 4:08 PM

Post #10 of 24 (10526 views)
Permalink

RE: Dual tuner info [In reply to]

Does your basic cable have anything that the cable box doesn't? If not,
you don't need the Television Input -> Listing #2 for cards 1 and 2. It
is redundant cabling and extra degradation with that many splitters.

If you choose 2 different types of listings, there will be double
channels in the listings, even if some of those channels are the same.
Another problem is that if you start watching live TV on the basic cable
only card (assuming the other 2 are busy), the only way to force it
later (after the others are done) to switch over to the digital and get
the extra channels is to drop out of Live TV and select Watch TV from
the menu.

I lasted in this mode for about a month before I got a second cable box
and re-configured all my Listings...

Mark Hanson

-----Original Message-----
From: James Orr [mailto:james[at]orrwhat.net]
Sent: Thursday, April 22, 2004 14:42
To: Discussion about mythtv
Subject: Re: [mythtv-users] Dual tuner info

On Thu, 2004-04-22 at 15:50, Jarod C. Wilson wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Thursday 22 April 2004 11:20, Khanh Tran wrote:
> > Can someone point me in the direction of good instructions on dual
tuner
> > setups? It seems like an obscure thing to find. I have them
working OK
> > so far, but the EPG shows two copies of the channel.
>
> That means you set up two separate channel sources for each tuner. If
they are
> for the same source, just assign that sources to both tuners.
>
> > Also, depending on
> > which one you choose, the backend will come back with an error
saying
> > that the tuner is in use if you choose two programs in the same
timeslot
> > to record. While this isn't a problem for me, the WAF will be low
on
> > remembering "which" of the two EPG items to choose...
>
> Go back into setup, clear out your epg, delete the second video
source, assign
> the first one to both tuner inputs.

So there's no way you can tell myth that a channel in one source is the
same as a channel in another? I'm not in this situation yet, but I
forsee I will be in the future.

My ultimate goal is to have three tuners, two for my DCT boxes and a
third with regular cable.

So, for the first two, no problem, just set the same source as they are
identical.

The third presents a problem as just adding another basic cable source
would result in duplicate channels ... unless ... and i'm basically
working this out as I type here so bear with me ...

Listing #1: Digital Cable with all basic channels removed
Listing #2: Basic Channels

Tuner #1:
Composite Input -> Listing #1
Television Input -> Listing #2

Tuner #2:
Composite Input -> Listing #1
Television Input -> Listing #2

Tuner #3:
Television Input -> Listing #2

This would probably make a bit of a cable nightmare at the back and may
require a few cable splitters to setup.

MythTV is smart enough to know that it can't record the television input
of tuner 1 if it's using the composite already, right? Would this work?

--
James Orr <james[at]orrwhat.net>

jcw at wilsonet

Apr 22, 2004, 4:32 PM

Post #11 of 24 (10524 views)
Permalink

Re: Dual tuner info [In reply to]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Thursday 22 April 2004 13:42, James Orr wrote:
>
> So there's no way you can tell myth that a channel in one source is the
> same as a channel in another?

Not that I know of.

> I'm not in this situation yet, but I
> forsee I will be in the future.
>
> My ultimate goal is to have three tuners, two for my DCT boxes and a
> third with regular cable.
>
> So, for the first two, no problem, just set the same source as they are
> identical.
>
> The third presents a problem as just adding another basic cable source
> would result in duplicate channels ... unless ... and i'm basically
> working this out as I type here so bear with me ...
>
> Listing #1: Digital Cable with all basic channels removed
> Listing #2: Basic Channels
>
> Tuner #1:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Tuner #2:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Tuner #3:
> Television Input -> Listing #2
>
> This would probably make a bit of a cable nightmare at the back and may
> require a few cable splitters to setup.

Yes, but its absolutely correct.

> MythTV is smart enough to know that it can't record the television input
> of tuner 1 if it's using the composite already, right? Would this work?

This would work, and Myth does know that it can't use a card if another input
is already in use.

- --
Jarod C. Wilson, RHCE
jcw[at]wilsonet.com

Got a question? Read this first...
http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
http://wilsonet.com/mythtv/
MythTV Searchable Mailing List Archive
http://www.gossamer-threads.com/archive/MythTV_C2/
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james at orrwhat

Apr 22, 2004, 6:58 PM

Post #12 of 24 (10540 views)
Permalink

RE: Dual tuner info [In reply to]

On Thu, 2004-04-22 at 19:08, Poobah wrote:
> Does your basic cable have anything that the cable box doesn't? If not,
> you don't need the Television Input -> Listing #2 for cards 1 and 2. It
> is redundant cabling and extra degradation with that many splitters.
>
> If you choose 2 different types of listings, there will be double
> channels in the listings, even if some of those channels are the same.
> Another problem is that if you start watching live TV on the basic cable
> only card (assuming the other 2 are busy), the only way to force it
> later (after the others are done) to switch over to the digital and get
> the extra channels is to drop out of Live TV and select Watch TV from
> the menu.
>
> I lasted in this mode for about a month before I got a second cable box
> and re-configured all my Listings...

Well, the cable package I have includes two digital boxes anyway. But,
as I said, my ultimate goal is to have three tuners because
occaisionally there are actually three things on at once I would like to
see.

Now, the best solution would be a means for MythTV to recognize or be
told that channel 5 in source 1 is the same as channel 5 in source 2 (or
even channel 3 is channel 4). Any developers know how feasible this
would be? I *think* it would only have to affect places where the user
actually views the listings. Except of course, any recordings set for
this channel would then be this channel or that channel.

The reason I used the television inputs in addition to the composite
inputs in my example is so that I could use two sets of television
listings with no duplicate channels. If I didn't add the television
inputs to those cards I wouldn't be able to record/watch 3 of the basic
cable channels without also having duplicate channel listings. When I
take the duplicate basic channels out of the digital listing I still
need a way of recording them, thus the use of the other input.

Note that I will be using at least 2 backends when I get all this setup,
so I won't be having all 3 tuner cards in one PC :).

> -----Original Message-----
> From: James Orr [mailto:james[at]orrwhat.net]
> Sent: Thursday, April 22, 2004 14:42
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] Dual tuner info
>
> On Thu, 2004-04-22 at 15:50, Jarod C. Wilson wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > On Thursday 22 April 2004 11:20, Khanh Tran wrote:
> > > Can someone point me in the direction of good instructions on dual
> tuner
> > > setups? It seems like an obscure thing to find. I have them
> working OK
> > > so far, but the EPG shows two copies of the channel.
> >
> > That means you set up two separate channel sources for each tuner. If
> they are
> > for the same source, just assign that sources to both tuners.
> >
> > > Also, depending on
> > > which one you choose, the backend will come back with an error
> saying
> > > that the tuner is in use if you choose two programs in the same
> timeslot
> > > to record. While this isn't a problem for me, the WAF will be low
> on
> > > remembering "which" of the two EPG items to choose...
> >
> > Go back into setup, clear out your epg, delete the second video
> source, assign
> > the first one to both tuner inputs.
>
> So there's no way you can tell myth that a channel in one source is the
> same as a channel in another? I'm not in this situation yet, but I
> forsee I will be in the future.
>
> My ultimate goal is to have three tuners, two for my DCT boxes and a
> third with regular cable.
>
> So, for the first two, no problem, just set the same source as they are
> identical.
>
> The third presents a problem as just adding another basic cable source
> would result in duplicate channels ... unless ... and i'm basically
> working this out as I type here so bear with me ...
>
> Listing #1: Digital Cable with all basic channels removed
> Listing #2: Basic Channels
>
> Tuner #1:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Tuner #2:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Tuner #3:
> Television Input -> Listing #2
>
> This would probably make a bit of a cable nightmare at the back and may
> require a few cable splitters to setup.
>
> MythTV is smart enough to know that it can't record the television input
> of tuner 1 if it's using the composite already, right? Would this work?
--
James Orr <james[at]orrwhat.net>

khanh at slc

Apr 23, 2004, 5:25 AM

Post #13 of 24 (10520 views)
Permalink

RE: Dual tuner info [In reply to]

I'm going to talk about this with a basic two tuner setup. One, because
it's easier and two, because that's what I have :)

So the setup is:

Listing #1: Digital Cable with all basic channels removed Listing #2:
Basic Channels

Tuner #1:
Composite Input -> Listing #1
Television Input -> Listing #2

Tuner #2:
Composite Input -> Listing #1
Television Input -> Listing #2

Let's now say Tuner #1 is busy recording digital channel 300. What
happens with Tuner #2 if my wife wants to tune to digital channel 160
and doesn't realize the digital box is in use? Won't Tuner #2 attempt
to make a channel change on the cable box that's busy feeding Tuner #1?

Thanks for all the help!

-Khanh

-----Original Message-----
From: James Orr [mailto:james[at]orrwhat.net]
Sent: Thursday, April 22, 2004 9:58 PM
To: Discussion about mythtv
Subject: RE: [mythtv-users] Dual tuner info

On Thu, 2004-04-22 at 19:08, Poobah wrote:
> Does your basic cable have anything that the cable box doesn't? If
> not, you don't need the Television Input -> Listing #2 for cards 1 and

> 2. It is redundant cabling and extra degradation with that many
splitters.
>
> If you choose 2 different types of listings, there will be double
> channels in the listings, even if some of those channels are the same.
> Another problem is that if you start watching live TV on the basic
> cable only card (assuming the other 2 are busy), the only way to force

> it later (after the others are done) to switch over to the digital and

> get the extra channels is to drop out of Live TV and select Watch TV
> from the menu.
>
> I lasted in this mode for about a month before I got a second cable
> box and re-configured all my Listings...

Well, the cable package I have includes two digital boxes anyway. But,
as I said, my ultimate goal is to have three tuners because
occaisionally there are actually three things on at once I would like to
see.

Now, the best solution would be a means for MythTV to recognize or be
told that channel 5 in source 1 is the same as channel 5 in source 2 (or
even channel 3 is channel 4). Any developers know how feasible this
would be? I *think* it would only have to affect places where the user
actually views the listings. Except of course, any recordings set for
this channel would then be this channel or that channel.

The reason I used the television inputs in addition to the composite
inputs in my example is so that I could use two sets of television
listings with no duplicate channels. If I didn't add the television
inputs to those cards I wouldn't be able to record/watch 3 of the basic
cable channels without also having duplicate channel listings. When I
take the duplicate basic channels out of the digital listing I still
need a way of recording them, thus the use of the other input.

Note that I will be using at least 2 backends when I get all this setup,
so I won't be having all 3 tuner cards in one PC :).

> -----Original Message-----
> From: James Orr [mailto:james[at]orrwhat.net]
> Sent: Thursday, April 22, 2004 14:42
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] Dual tuner info
>
> On Thu, 2004-04-22 at 15:50, Jarod C. Wilson wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > On Thursday 22 April 2004 11:20, Khanh Tran wrote:
> > > Can someone point me in the direction of good instructions on dual
> tuner
> > > setups? It seems like an obscure thing to find. I have them
> working OK
> > > so far, but the EPG shows two copies of the channel.
> >
> > That means you set up two separate channel sources for each tuner.
> > If
> they are
> > for the same source, just assign that sources to both tuners.
> >
> > > Also, depending on
> > > which one you choose, the backend will come back with an error
> saying
> > > that the tuner is in use if you choose two programs in the same
> timeslot
> > > to record. While this isn't a problem for me, the WAF will be low
> on
> > > remembering "which" of the two EPG items to choose...
> >
> > Go back into setup, clear out your epg, delete the second video
> source, assign
> > the first one to both tuner inputs.
>
> So there's no way you can tell myth that a channel in one source is
> the same as a channel in another? I'm not in this situation yet, but
> I forsee I will be in the future.
>
> My ultimate goal is to have three tuners, two for my DCT boxes and a
> third with regular cable.
>
> So, for the first two, no problem, just set the same source as they
> are identical.
>
> The third presents a problem as just adding another basic cable source

> would result in duplicate channels ... unless ... and i'm basically
> working this out as I type here so bear with me ...
>
> Listing #1: Digital Cable with all basic channels removed Listing #2:
> Basic Channels
>
> Tuner #1:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Tuner #2:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Tuner #3:
> Television Input -> Listing #2
>
> This would probably make a bit of a cable nightmare at the back and
> may require a few cable splitters to setup.
>
> MythTV is smart enough to know that it can't record the television
> input of tuner 1 if it's using the composite already, right? Would
this work?
--
James Orr <james[at]orrwhat.net>

james at orrwhat

Apr 23, 2004, 7:17 AM

Post #14 of 24 (10526 views)
Permalink

RE: Dual tuner info [In reply to]

On Fri, 2004-04-23 at 08:25, Khanh Tran wrote:
> I'm going to talk about this with a basic two tuner setup. One, because
> it's easier and two, because that's what I have :)
>
> So the setup is:
>
> Listing #1: Digital Cable with all basic channels removed Listing #2:
> Basic Channels
>
> Tuner #1:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Tuner #2:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Let's now say Tuner #1 is busy recording digital channel 300. What
> happens with Tuner #2 if my wife wants to tune to digital channel 160
> and doesn't realize the digital box is in use? Won't Tuner #2 attempt
> to make a channel change on the cable box that's busy feeding Tuner #1?
>

If you only have one digital box, setup like so:
Tuner #1:
Television Input -> Listing #2

Tuner #2:
Composite Input -> Listing #1
Television Input -> Listing #2

If you have two digital boxes, only use the composite inputs and one
listing source with all channels included. It's only if you want more
tuners than you have digital boxes you need to do this.

The digital box is on the second tuner. This allows you to
record/watch:

A basic channel and a digital channel
Two basic channels

If you put the tuner card with digital as the first tuner, it might
decide to use that to record a basic channel and then you would be
unable to watch digital as the only tuner card with digital available is
tied up (even though it's not actually using digital).

--
James Orr <james[at]orrwhat.net>

khanh at slc

Apr 23, 2004, 8:42 AM

Post #15 of 24 (10531 views)
Permalink

RE: Dual tuner info [In reply to]

OK, thanks for the info. I have only one digital cable box, and don't
really need the second. I really only record shows on basic cable. I
do want to make sure my digital cable is available when I record basic
cable. However, even though I don't have that setup now, I was having
problems with the basic setup, that I think will still give me problems
under your diagram. This may be a separate issue, but here goes:

Listing #1 = basic cable, Listing #2 = digital cable

Tuner #1:
Television Input -> Listing #1

Tuner #2:
Composite Input -> Listing #2

Last night, I was watching Live TV on Tuner #1, tuned to basic cable
channel 5. I then tried to enter a three digit channel to try to watch
a digital cable channel. I could not. It would only allow two digit
channels and obviously was stuck on that basic cable tuner. As soon as
decided to record E.R. (on Tuner #1), MythTV went over to Tuner #2 and I
could access the three digit cable channels. Would I not have the same
problem with your config? Is my issue completely unrelated and
separate?

Thanks again...

-Khanh

-----Original Message-----
From: James Orr [mailto:james[at]orrwhat.net]
Sent: Friday, April 23, 2004 10:18 AM
To: khanh[at]khanh.net; Discussion about mythtv
Subject: RE: [mythtv-users] Dual tuner info

On Fri, 2004-04-23 at 08:25, Khanh Tran wrote:
> I'm going to talk about this with a basic two tuner setup. One,
> because it's easier and two, because that's what I have :)
>
> So the setup is:
>
> Listing #1: Digital Cable with all basic channels removed Listing #2:
> Basic Channels
>
> Tuner #1:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Tuner #2:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Let's now say Tuner #1 is busy recording digital channel 300. What
> happens with Tuner #2 if my wife wants to tune to digital channel 160
> and doesn't realize the digital box is in use? Won't Tuner #2 attempt

> to make a channel change on the cable box that's busy feeding Tuner
#1?
>

If you only have one digital box, setup like so:
Tuner #1:
Television Input -> Listing #2

Tuner #2:
Composite Input -> Listing #1
Television Input -> Listing #2

If you have two digital boxes, only use the composite inputs and one
listing source with all channels included. It's only if you want more
tuners than you have digital boxes you need to do this.

The digital box is on the second tuner. This allows you to
record/watch:

A basic channel and a digital channel
Two basic channels

If you put the tuner card with digital as the first tuner, it might
decide to use that to record a basic channel and then you would be
unable to watch digital as the only tuner card with digital available is
tied up (even though it's not actually using digital).

--
James Orr <james[at]orrwhat.net>

brumple at VALUBOND

Apr 23, 2004, 9:10 AM

Post #16 of 24 (10524 views)
Permalink

RE: Dual tuner info [In reply to]

I have seen this issue with my setup. I cannot switch to the premium
channels by typing the channel number or by pressing 'c' to change the
input. Everything records fine though.

Listing #1 = basic cable, Listing #2 = digital cable

Tuner #1:
Television Input -> Listing #1

Tuner #2:
Television Input -> Listing #1
Svideo Input -> Listing #2 (without basic channels)

-----Original Message-----
From: mythtv-users-bounces[at]mythtv.org
[mailto:mythtv-users-bounces[at]mythtv.org] On Behalf Of Khanh Tran
Sent: Friday, April 23, 2004 11:43 AM
To: Discussion about mythtv
Subject: RE: [mythtv-users] Dual tuner info

OK, thanks for the info. I have only one digital cable box, and don't
really need the second. I really only record shows on basic cable. I
do want to make sure my digital cable is available when I record basic
cable. However, even though I don't have that setup now, I was having
problems with the basic setup, that I think will still give me problems
under your diagram. This may be a separate issue, but here goes:

Listing #1 = basic cable, Listing #2 = digital cable

Tuner #1:
Television Input -> Listing #1

Tuner #2:
Composite Input -> Listing #2

Last night, I was watching Live TV on Tuner #1, tuned to basic cable
channel 5. I then tried to enter a three digit channel to try to watch
a digital cable channel. I could not. It would only allow two digit
channels and obviously was stuck on that basic cable tuner. As soon as
decided to record E.R. (on Tuner #1), MythTV went over to Tuner #2 and I
could access the three digit cable channels. Would I not have the same
problem with your config? Is my issue completely unrelated and
separate?

Thanks again...

-Khanh

-----Original Message-----
From: James Orr [mailto:james[at]orrwhat.net]
Sent: Friday, April 23, 2004 10:18 AM
To: khanh[at]khanh.net; Discussion about mythtv
Subject: RE: [mythtv-users] Dual tuner info

On Fri, 2004-04-23 at 08:25, Khanh Tran wrote:
> I'm going to talk about this with a basic two tuner setup. One,
> because it's easier and two, because that's what I have :)
>
> So the setup is:
>
> Listing #1: Digital Cable with all basic channels removed Listing #2:
> Basic Channels
>
> Tuner #1:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Tuner #2:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> Let's now say Tuner #1 is busy recording digital channel 300. What
> happens with Tuner #2 if my wife wants to tune to digital channel 160
> and doesn't realize the digital box is in use? Won't Tuner #2 attempt

> to make a channel change on the cable box that's busy feeding Tuner
#1?
>

If you only have one digital box, setup like so:
Tuner #1:
Television Input -> Listing #2

Tuner #2:
Composite Input -> Listing #1
Television Input -> Listing #2

If you have two digital boxes, only use the composite inputs and one
listing source with all channels included. It's only if you want more
tuners than you have digital boxes you need to do this.

The digital box is on the second tuner. This allows you to
record/watch:

A basic channel and a digital channel
Two basic channels

If you put the tuner card with digital as the first tuner, it might
decide to use that to record a basic channel and then you would be
unable to watch digital as the only tuner card with digital available is
tied up (even though it's not actually using digital).

--
James Orr <james[at]orrwhat.net>

jcw at wilsonet

Apr 23, 2004, 10:27 AM

Post #17 of 24 (10508 views)
Permalink

Re: Dual tuner info [In reply to]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Friday 23 April 2004 09:10, Brian Rumple wrote:
> I have seen this issue with my setup. I cannot switch to the premium
> channels by typing the channel number or by pressing 'c' to change the
> input. Everything records fine though.
>
>
> Listing #1 = basic cable, Listing #2 = digital cable
>
> Tuner #1:
> Television Input -> Listing #1
>
> Tuner #2:
> Television Input -> Listing #1
> Svideo Input -> Listing #2 (without basic channels)

At present, you can't change channels across cards, and c only switches inputs
on your active card. You have to switch cards, then inputs, then enter the
channel you want. There's work being done to remedy this situation though.

> -----Original Message-----
> From: mythtv-users-bounces[at]mythtv.org
> [mailto:mythtv-users-bounces[at]mythtv.org] On Behalf Of Khanh Tran
> Sent: Friday, April 23, 2004 11:43 AM
> To: Discussion about mythtv
> Subject: RE: [mythtv-users] Dual tuner info
>
>
> OK, thanks for the info. I have only one digital cable box, and don't
> really need the second. I really only record shows on basic cable. I
> do want to make sure my digital cable is available when I record basic
> cable. However, even though I don't have that setup now, I was having
> problems with the basic setup, that I think will still give me problems
> under your diagram. This may be a separate issue, but here goes:
>
> Listing #1 = basic cable, Listing #2 = digital cable
>
> Tuner #1:
> Television Input -> Listing #1
>
> Tuner #2:
> Composite Input -> Listing #2
>
> Last night, I was watching Live TV on Tuner #1, tuned to basic cable
> channel 5. I then tried to enter a three digit channel to try to watch
> a digital cable channel. I could not. It would only allow two digit
> channels and obviously was stuck on that basic cable tuner. As soon as
> decided to record E.R. (on Tuner #1), MythTV went over to Tuner #2 and I
> could access the three digit cable channels. Would I not have the same
> problem with your config? Is my issue completely unrelated and
> separate?
>
> Thanks again...
>
> -Khanh
>
>
> -----Original Message-----
> From: James Orr [mailto:james[at]orrwhat.net]
> Sent: Friday, April 23, 2004 10:18 AM
> To: khanh[at]khanh.net; Discussion about mythtv
> Subject: RE: [mythtv-users] Dual tuner info
>
> On Fri, 2004-04-23 at 08:25, Khanh Tran wrote:
> > I'm going to talk about this with a basic two tuner setup. One,
> > because it's easier and two, because that's what I have :)
> >
> > So the setup is:
> >
> > Listing #1: Digital Cable with all basic channels removed Listing #2:
> > Basic Channels
> >
> > Tuner #1:
> > Composite Input -> Listing #1
> > Television Input -> Listing #2
> >
> > Tuner #2:
> > Composite Input -> Listing #1
> > Television Input -> Listing #2
> >
> > Let's now say Tuner #1 is busy recording digital channel 300. What
> > happens with Tuner #2 if my wife wants to tune to digital channel 160
> > and doesn't realize the digital box is in use? Won't Tuner #2 attempt
> >
> > to make a channel change on the cable box that's busy feeding Tuner
>
> #1?
>
>
> If you only have one digital box, setup like so:
> Tuner #1:
> Television Input -> Listing #2
>
> Tuner #2:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> If you have two digital boxes, only use the composite inputs and one
> listing source with all channels included. It's only if you want more
> tuners than you have digital boxes you need to do this.
>
> The digital box is on the second tuner. This allows you to
> record/watch:
>
> A basic channel and a digital channel
> Two basic channels
>
> If you put the tuner card with digital as the first tuner, it might
> decide to use that to record a basic channel and then you would be
> unable to watch digital as the only tuner card with digital available is
> tied up (even though it's not actually using digital).
>
> --
> James Orr <james[at]orrwhat.net>

- --
Jarod C. Wilson, RHCE
jcw[at]wilsonet.com

Got a question? Read this first...
http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
http://wilsonet.com/mythtv/
MythTV Searchable Mailing List Archive
http://www.gossamer-threads.com/archive/MythTV_C2/
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khanh at slc

Apr 23, 2004, 11:02 AM

Post #18 of 24 (10520 views)
Permalink

RE: Dual tuner info [In reply to]

OK, so because of this, I MUST have both sources assigned to both tuners, else I run the risk of not having access to digital cable channels, depending on the state of the tuners. However, then because of this, I also have the risk of my wife changing to a digital channel when the digital cable box is actually being recorded from, on a tuner.

Correct?

-Khanh Tran

-----Original Message-----
From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
Sent: Friday, April 23, 2004 1:28 PM
To: Discussion about mythtv
Subject: Re: [mythtv-users] Dual tuner info

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Friday 23 April 2004 09:10, Brian Rumple wrote:
> I have seen this issue with my setup. I cannot switch to the premium
> channels by typing the channel number or by pressing 'c' to change the
> input. Everything records fine though.
>
>
> Listing #1 = basic cable, Listing #2 = digital cable
>
> Tuner #1:
> Television Input -> Listing #1
>
> Tuner #2:
> Television Input -> Listing #1
> Svideo Input -> Listing #2 (without basic channels)

At present, you can't change channels across cards, and c only switches inputs on your active card. You have to switch cards, then inputs, then enter the channel you want. There's work being done to remedy this situation though.

> -----Original Message-----
> From: mythtv-users-bounces[at]mythtv.org
> [mailto:mythtv-users-bounces[at]mythtv.org] On Behalf Of Khanh Tran
> Sent: Friday, April 23, 2004 11:43 AM
> To: Discussion about mythtv
> Subject: RE: [mythtv-users] Dual tuner info
>
>
> OK, thanks for the info. I have only one digital cable box, and don't
> really need the second. I really only record shows on basic cable. I
> do want to make sure my digital cable is available when I record basic
> cable. However, even though I don't have that setup now, I was having
> problems with the basic setup, that I think will still give me
> problems under your diagram. This may be a separate issue, but here goes:
>
> Listing #1 = basic cable, Listing #2 = digital cable
>
> Tuner #1:
> Television Input -> Listing #1
>
> Tuner #2:
> Composite Input -> Listing #2
>
> Last night, I was watching Live TV on Tuner #1, tuned to basic cable
> channel 5. I then tried to enter a three digit channel to try to
> watch a digital cable channel. I could not. It would only allow two
> digit channels and obviously was stuck on that basic cable tuner. As
> soon as decided to record E.R. (on Tuner #1), MythTV went over to
> Tuner #2 and I could access the three digit cable channels. Would I
> not have the same problem with your config? Is my issue completely
> unrelated and separate?
>
> Thanks again...
>
> -Khanh
>
>
> -----Original Message-----
> From: James Orr [mailto:james[at]orrwhat.net]
> Sent: Friday, April 23, 2004 10:18 AM
> To: khanh[at]khanh.net; Discussion about mythtv
> Subject: RE: [mythtv-users] Dual tuner info
>
> On Fri, 2004-04-23 at 08:25, Khanh Tran wrote:
> > I'm going to talk about this with a basic two tuner setup. One,
> > because it's easier and two, because that's what I have :)
> >
> > So the setup is:
> >
> > Listing #1: Digital Cable with all basic channels removed Listing #2:
> > Basic Channels
> >
> > Tuner #1:
> > Composite Input -> Listing #1
> > Television Input -> Listing #2
> >
> > Tuner #2:
> > Composite Input -> Listing #1
> > Television Input -> Listing #2
> >
> > Let's now say Tuner #1 is busy recording digital channel 300. What
> > happens with Tuner #2 if my wife wants to tune to digital channel
> > 160 and doesn't realize the digital box is in use? Won't Tuner #2
> > attempt
> >
> > to make a channel change on the cable box that's busy feeding Tuner
>
> #1?
>
>
> If you only have one digital box, setup like so:
> Tuner #1:
> Television Input -> Listing #2
>
> Tuner #2:
> Composite Input -> Listing #1
> Television Input -> Listing #2
>
> If you have two digital boxes, only use the composite inputs and one
> listing source with all channels included. It's only if you want more
> tuners than you have digital boxes you need to do this.
>
> The digital box is on the second tuner. This allows you to
> record/watch:
>
> A basic channel and a digital channel
> Two basic channels
>
> If you put the tuner card with digital as the first tuner, it might
> decide to use that to record a basic channel and then you would be
> unable to watch digital as the only tuner card with digital available
> is tied up (even though it's not actually using digital).
>
> --
> James Orr <james[at]orrwhat.net>

- --
Jarod C. Wilson, RHCE
jcw[at]wilsonet.com

Got a question? Read this first...
� � �http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
� � �http://wilsonet.com/mythtv/
MythTV Searchable Mailing List Archive
� � �http://www.gossamer-threads.com/archive/MythTV_C2/
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_______________________________________________
mythtv-users mailing list
mythtv-users[at]mythtv.org
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users

jcw at wilsonet

Apr 23, 2004, 4:19 PM

Post #19 of 24 (10530 views)
Permalink

Re: Dual tuner info [In reply to]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Friday 23 April 2004 11:02, Khanh Tran wrote:
> OK, so because of this, I MUST have both sources assigned to both tuners,
> else I run the risk of not having access to digital cable channels,
> depending on the state of the tuners.

With one cable box, no, only one card should have the digital channels
assigned, because your cable box can only output one channel at a time.

> However, then because of this, I
> also have the risk of my wife changing to a digital channel when the
> digital cable box is actually being recorded from, on a tuner.

If the input is in use, Myth knows it is in use, and won't try to change to
it.

Judging from your last sentence, I think you may have some confusion as to how
the cabling would work... You should have a splitter that breaks the signal
up into 3 distinct coax connections. One goes to the cable box, one to the
tuner input of each of your cards. The cable box then feeds the SVid or
composite input on one of the cards. The only time anything flows through the
cable box is when you're recording or watching a digital-only channel. The
two tuner inputs don't give a rip about the cable box.

> -----Original Message-----
> From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
>
> On Friday 23 April 2004 09:10, Brian Rumple wrote:
> > I have seen this issue with my setup. I cannot switch to the premium
> > channels by typing the channel number or by pressing 'c' to change the
> > input. Everything records fine though.
> >
> >
> > Listing #1 = basic cable, Listing #2 = digital cable
> >
> > Tuner #1:
> > Television Input -> Listing #1
> >
> > Tuner #2:
> > Television Input -> Listing #1
> > Svideo Input -> Listing #2 (without basic channels)
>
> At present, you can't change channels across cards, and c only switches
> inputs on your active card. You have to switch cards, then inputs, then
> enter the channel you want. There's work being done to remedy this
> situation though.

- --
Jarod C. Wilson, RHCE
jcw[at]wilsonet.com

Got a question? Read this first...
� � �http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
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khanh at slc

Apr 23, 2004, 4:55 PM

Post #20 of 24 (10530 views)
Permalink

RE: Dual tuner info [In reply to]

That makes perfect sense, but what I'm confused about is what I experienced before. When I had the digital cable source assigned to only one tuner, I had trouble changing to a digital channel:

1. I was watching basic cable on Tuner 1 (that had only basic cable attached)
2. I attempted to change to a digital channel.
3. Tuner 1, not having the digital cable as a source,
4. MythTV wouldn't switch to Tuner 2 to complete the channel change

Is this unrealistic at this point? I recall your recent post about MythTV not being able to automatically switch tuners, but it's higher on my WAF than risking digital cable on both tuners...

-Khanh

-----Original Message-----
From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
Sent: Friday, April 23, 2004 7:20 PM
To: khanh[at]khanh.net; Discussion about mythtv
Subject: Re: [mythtv-users] Dual tuner info

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Friday 23 April 2004 11:02, Khanh Tran wrote:
> OK, so because of this, I MUST have both sources assigned to both
> tuners, else I run the risk of not having access to digital cable
> channels, depending on the state of the tuners.

With one cable box, no, only one card should have the digital channels assigned, because your cable box can only output one channel at a time.

> However, then because of this, I
> also have the risk of my wife changing to a digital channel when the
> digital cable box is actually being recorded from, on a tuner.

If the input is in use, Myth knows it is in use, and won't try to change to it.

Judging from your last sentence, I think you may have some confusion as to how the cabling would work... You should have a splitter that breaks the signal up into 3 distinct coax connections. One goes to the cable box, one to the tuner input of each of your cards. The cable box then feeds the SVid or composite input on one of the cards. The only time anything flows through the cable box is when you're recording or watching a digital-only channel. The two tuner inputs don't give a rip about the cable box.

> -----Original Message-----
> From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
>
> On Friday 23 April 2004 09:10, Brian Rumple wrote:
> > I have seen this issue with my setup. I cannot switch to the
> > premium channels by typing the channel number or by pressing 'c' to
> > change the input. Everything records fine though.
> >
> >
> > Listing #1 = basic cable, Listing #2 = digital cable
> >
> > Tuner #1:
> > Television Input -> Listing #1
> >
> > Tuner #2:
> > Television Input -> Listing #1
> > Svideo Input -> Listing #2 (without basic channels)
>
> At present, you can't change channels across cards, and c only
> switches inputs on your active card. You have to switch cards, then
> inputs, then enter the channel you want. There's work being done to
> remedy this situation though.

- --
Jarod C. Wilson, RHCE
jcw[at]wilsonet.com

Got a question? Read this first...
� � �http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
� � �http://wilsonet.com/mythtv/
MythTV Searchable Mailing List Archive
� � �http://www.gossamer-threads.com/archive/MythTV_C2/
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jcw at wilsonet

Apr 23, 2004, 10:20 PM

Post #21 of 24 (10554 views)
Permalink

Re: Dual tuner info [In reply to]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Friday 23 April 2004 16:55, Khanh Tran wrote:
> That makes perfect sense, but what I'm confused about is what I experienced
> before. When I had the digital cable source assigned to only one tuner, I
> had trouble changing to a digital channel:
>
> 1. I was watching basic cable on Tuner 1 (that had only basic cable
> attached)
> 2. I attempted to change to a digital channel.
> 3. Tuner 1, not having the digital cable as a source,
> 4. MythTV wouldn't switch to Tuner 2 to complete the channel change
>
> Is this unrealistic at this point? I recall your recent post about MythTV
> not being able to automatically switch tuners, but it's higher on my WAF
> than risking digital cable on both tuners...

Hm... This is a bit messy... You'd want the first card to have both sources to
easily (or easier) change to digital channels for live TV (by toggling
inputs), but then this card would be the first one used for recordings, so if
something was recording, you wouldn't be able to watch the digital
channels... I think you may have to wait for work to be completed on the
patch that allows you to change between inputs and cards in one fell swoop to
get everything working optimally... :-(

There ain't much on the digital channels I actually record (I only have a
cable box for the HD channels), so I've never really had to wrap my noggin
around this one... And most live TV I watch, I just use my cable boxes
directly.

> -----Original Message-----
> From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
>
> On Friday 23 April 2004 11:02, Khanh Tran wrote:
> > OK, so because of this, I MUST have both sources assigned to both
> > tuners, else I run the risk of not having access to digital cable
> > channels, depending on the state of the tuners.
>
> With one cable box, no, only one card should have the digital channels
> assigned, because your cable box can only output one channel at a time.
>
> > However, then because of this, I
> > also have the risk of my wife changing to a digital channel when the
> > digital cable box is actually being recorded from, on a tuner.
>
> If the input is in use, Myth knows it is in use, and won't try to change to
> it.
>
> Judging from your last sentence, I think you may have some confusion as to
> how the cabling would work... You should have a splitter that breaks the
> signal up into 3 distinct coax connections. One goes to the cable box, one
> to the tuner input of each of your cards. The cable box then feeds the SVid
> or composite input on one of the cards. The only time anything flows
> through the cable box is when you're recording or watching a digital-only
> channel. The two tuner inputs don't give a rip about the cable box.
>
> > -----Original Message-----
> > From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
> >
> > On Friday 23 April 2004 09:10, Brian Rumple wrote:
> > > I have seen this issue with my setup. I cannot switch to the
> > > premium channels by typing the channel number or by pressing 'c' to
> > > change the input. Everything records fine though.
> > >
> > >
> > > Listing #1 = basic cable, Listing #2 = digital cable
> > >
> > > Tuner #1:
> > > Television Input -> Listing #1
> > >
> > > Tuner #2:
> > > Television Input -> Listing #1
> > > Svideo Input -> Listing #2 (without basic channels)
> >
> > At present, you can't change channels across cards, and c only
> > switches inputs on your active card. You have to switch cards, then
> > inputs, then enter the channel you want. There's work being done to
> > remedy this situation though.

- --
Jarod C. Wilson, RHCE

Got a question? Read this first...
� � �http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
� � �http://wilsonet.com/mythtv/
MythTV Searchable Mailing List Archive
� � �http://www.gossamer-threads.com/archive/MythTV_C2/
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khanh at slc

Apr 24, 2004, 5:53 AM

Post #22 of 24 (10534 views)
Permalink

RE: Dual tuner info [In reply to]

*sigh*

I suppose I'll just have to wait for the patch. Do you know if it's included in .15?

-Khanh

-----Original Message-----
From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
Sent: Saturday, April 24, 2004 1:20 AM
To: khanh[at]khanh.net; Discussion about mythtv
Subject: Re: [mythtv-users] Dual tuner info

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Friday 23 April 2004 16:55, Khanh Tran wrote:
> That makes perfect sense, but what I'm confused about is what I
> experienced before. When I had the digital cable source assigned to
> only one tuner, I had trouble changing to a digital channel:
>
> 1. I was watching basic cable on Tuner 1 (that had only basic cable
> attached)
> 2. I attempted to change to a digital channel.
> 3. Tuner 1, not having the digital cable as a source, 4. MythTV
> wouldn't switch to Tuner 2 to complete the channel change
>
> Is this unrealistic at this point? I recall your recent post about
> MythTV not being able to automatically switch tuners, but it's higher
> on my WAF than risking digital cable on both tuners...

Hm... This is a bit messy... You'd want the first card to have both sources to easily (or easier) change to digital channels for live TV (by toggling inputs), but then this card would be the first one used for recordings, so if something was recording, you wouldn't be able to watch the digital channels... I think you may have to wait for work to be completed on the patch that allows you to change between inputs and cards in one fell swoop to get everything working optimally... :-(

There ain't much on the digital channels I actually record (I only have a cable box for the HD channels), so I've never really had to wrap my noggin around this one... And most live TV I watch, I just use my cable boxes directly.

> -----Original Message-----
> From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
>
> On Friday 23 April 2004 11:02, Khanh Tran wrote:
> > OK, so because of this, I MUST have both sources assigned to both
> > tuners, else I run the risk of not having access to digital cable
> > channels, depending on the state of the tuners.
>
> With one cable box, no, only one card should have the digital channels
> assigned, because your cable box can only output one channel at a time.
>
> > However, then because of this, I
> > also have the risk of my wife changing to a digital channel when the
> > digital cable box is actually being recorded from, on a tuner.
>
> If the input is in use, Myth knows it is in use, and won't try to
> change to it.
>
> Judging from your last sentence, I think you may have some confusion
> as to how the cabling would work... You should have a splitter that
> breaks the signal up into 3 distinct coax connections. One goes to the
> cable box, one to the tuner input of each of your cards. The cable box
> then feeds the SVid or composite input on one of the cards. The only
> time anything flows through the cable box is when you're recording or
> watching a digital-only channel. The two tuner inputs don't give a rip about the cable box.
>
> > -----Original Message-----
> > From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
> >
> > On Friday 23 April 2004 09:10, Brian Rumple wrote:
> > > I have seen this issue with my setup. I cannot switch to the
> > > premium channels by typing the channel number or by pressing 'c'
> > > to change the input. Everything records fine though.
> > >
> > >
> > > Listing #1 = basic cable, Listing #2 = digital cable
> > >
> > > Tuner #1:
> > > Television Input -> Listing #1
> > >
> > > Tuner #2:
> > > Television Input -> Listing #1
> > > Svideo Input -> Listing #2 (without basic channels)
> >
> > At present, you can't change channels across cards, and c only
> > switches inputs on your active card. You have to switch cards, then
> > inputs, then enter the channel you want. There's work being done to
> > remedy this situation though.

- --
Jarod C. Wilson, RHCE

Got a question? Read this first...
� � �http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
� � �http://wilsonet.com/mythtv/
MythTV Searchable Mailing List Archive
� � �http://www.gossamer-threads.com/archive/MythTV_C2/
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jcw at wilsonet

Apr 24, 2004, 10:52 AM

Post #23 of 24 (10541 views)
Permalink

Re: Dual tuner info [In reply to]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Saturday 24 April 2004 05:53, Khanh Tran wrote:
> *sigh*
>
> I suppose I'll just have to wait for the patch. Do you know if it's
> included in .15?

I'm not 100% certain, but I think so. I believe JDS (or Isaac) would know for
certain...

> -----Original Message-----
> From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
> Sent: Saturday, April 24, 2004 1:20 AM
> To: khanh[at]khanh.net; Discussion about mythtv
> Subject: Re: [mythtv-users] Dual tuner info
>
> On Friday 23 April 2004 16:55, Khanh Tran wrote:
> > That makes perfect sense, but what I'm confused about is what I
> > experienced before. When I had the digital cable source assigned to
> > only one tuner, I had trouble changing to a digital channel:
> >
> > 1. I was watching basic cable on Tuner 1 (that had only basic cable
> > attached)
> > 2. I attempted to change to a digital channel.
> > 3. Tuner 1, not having the digital cable as a source, 4. MythTV
> > wouldn't switch to Tuner 2 to complete the channel change
> >
> > Is this unrealistic at this point? I recall your recent post about
> > MythTV not being able to automatically switch tuners, but it's higher
> > on my WAF than risking digital cable on both tuners...
>
> Hm... This is a bit messy... You'd want the first card to have both sources
> to easily (or easier) change to digital channels for live TV (by toggling
> inputs), but then this card would be the first one used for recordings, so
> if something was recording, you wouldn't be able to watch the digital
> channels... I think you may have to wait for work to be completed on the
> patch that allows you to change between inputs and cards in one fell swoop
> to get everything working optimally... :-(

- --
Jarod C. Wilson, RHCE

Got a question? Read this first...
� � �http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
� � �http://wilsonet.com/mythtv/
MythTV Searchable Mailing List Archive
� � �http://www.gossamer-threads.com/archive/MythTV_C2/
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khanh at slc

Apr 24, 2004, 4:15 PM

Post #24 of 24 (10517 views)
Permalink

RE: Dual tuner info [In reply to]

Here's a thought...

Let's say I go and make two listings. Listing #1 is digital_cable and listing #2 is basic_cable. I DON'T edit out the duplicated "basic" channels from digital_cable and let the EPG then show duplicate channels for the the basic listings. I then assign digital_cable to Tuner #1 and basic_cable to Tuner #2.

Here's the question. If I am careful about scheduling and ALWAYS select the second of the duplicate listings, will MythTV not only realize I've chosen the channel from the second listing and therefor record on the second tuner always? This way, if something is recording (or going to), my wife and I would never be interrupted on the first tuner...

Thanks again to all...

-Khanh

-----Original Message-----
From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
Sent: Saturday, April 24, 2004 1:53 PM
To: khanh[at]khanh.net; Discussion about mythtv
Subject: Re: [mythtv-users] Dual tuner info

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Saturday 24 April 2004 05:53, Khanh Tran wrote:
> *sigh*
>
> I suppose I'll just have to wait for the patch. Do you know if it's
> included in .15?

I'm not 100% certain, but I think so. I believe JDS (or Isaac) would know for certain...

> -----Original Message-----
> From: Jarod C. Wilson [mailto:jcw[at]wilsonet.com]
> Sent: Saturday, April 24, 2004 1:20 AM
> To: khanh[at]khanh.net; Discussion about mythtv
> Subject: Re: [mythtv-users] Dual tuner info
>
> On Friday 23 April 2004 16:55, Khanh Tran wrote:
> > That makes perfect sense, but what I'm confused about is what I
> > experienced before. When I had the digital cable source assigned to
> > only one tuner, I had trouble changing to a digital channel:
> >
> > 1. I was watching basic cable on Tuner 1 (that had only basic cable
> > attached)
> > 2. I attempted to change to a digital channel.
> > 3. Tuner 1, not having the digital cable as a source, 4. MythTV
> > wouldn't switch to Tuner 2 to complete the channel change
> >
> > Is this unrealistic at this point? I recall your recent post about
> > MythTV not being able to automatically switch tuners, but it's higher
> > on my WAF than risking digital cable on both tuners...
>
> Hm... This is a bit messy... You'd want the first card to have both sources
> to easily (or easier) change to digital channels for live TV (by toggling
> inputs), but then this card would be the first one used for recordings, so
> if something was recording, you wouldn't be able to watch the digital
> channels... I think you may have to wait for work to be completed on the
> patch that allows you to change between inputs and cards in one fell swoop
> to get everything working optimally... :-(

- --
Jarod C. Wilson, RHCE

Got a question? Read this first...
� � �http://catb.org/~esr/faqs/smart-questions.html
MythTV, Fedora Core & ATrpms documentation:
� � �http://wilsonet.com/mythtv/
MythTV Searchable Mailing List Archive
� � �http://www.gossamer-threads.com/archive/MythTV_C2/
-----BEGIN PGP SIGNATURE-----
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