[mythtv-users] using the same channel from two different sources

[xavier hervy]

On Wed, 2008-07-30 at 11:08 -0400, Michael T. Dean wrote:
> On 07/30/2008 06:31 AM, Andrew Williams wrote:
> > 2008/7/30 Simon Allcorn:
> >   
> >> I can't see the answer to this elsewhere so I'm hoping someone will have an
> >> idea:
> >>
> >> I've got 2x DVB-T and 1x DVB-S cards in my backend. I'm in the UK and all
> >> the channels (more or less) available on DVB-T are also available on DVB-S,
> >> although they have a different channel id, so for example:
> >>
> >> BBC1 (DVB-T) channel id #1
> >> BBC1 (DVB-S) channel id #123456 (or some such high number)
> >>
> >> What I want to be able to do is schedule some recordings on channel 'BBC1'
> >> and let myth spread them out over the DVB-T and DVB-S receivers. Currently
> >> my myth setup treats BBC1 from DVB-S as a different channel to BBC1 from
> >> DVB-T which is not what I want.
> > Set the channum as the name number (to 1, i guess) and it should use
> > both tuners as the same channel
> 
> Almost...  The channel number is /only/ used as a means to tell Myth 
> which channel to watch during LiveTV (i.e. provides a means for you to 
> switch to a channel directly by entering the proper "code"--the channel 
> number).  You can set the channel number to any value you want (so you 
> can remap the channels when your stupid cable company puts Fox 35 on 
> channel 5 or something).  Generally, though, every channel defined on a 
> Myth box should have a unique channel number to allow you to change to 
> the channel you want without having to worry about what capture 
> card/card input is currently in use before typing the channel number.
> 
> The channel callsign, on the other hand, is used to tell Myth that two 
> channels carry "substantially" identical content (i.e. should be treated 
> as the same channel for the purpose of scheduling).  At this point, Myth 
> will schedule any "this channel" rules to record off either source.  
> ("This channel" rules are defined by channel callsign, not channel 
> number or channel ID or source or ...)
> 
> However, in this instance--where two channels with the same content are 
> given the same callsign--we have the one exception to the "unique 
> channel number for all channels" rule:  if you want the program listing 
> for both channels "merged" into one line in the program guide, you 
> should set the channel numbers to the same value.  If given the same 
> callsign and channel number, the listings for those "same" channels will 
> be shown only once.
> 
> > , as long as the EPG data is the same.
> 
> Exactly.
> 
> Mike
That's a very helpful information.
Thanks Mike

Xavier