[mythtv] Slave backend problems with livetv

[Joseph A. Caputo]

On Tuesday 09 March 2004 14:49, Daniel Sangenberg wrote:
> Joseph A. Caputo wrote:
> > On Tuesday 09 March 2004 13:22, Daniel Sangenberg wrote:
> >> Hi!
> >>
> >> I posted this on the users list earlier but i was thinking that if
> >> scheduled recordings work and not livetv it may be a bug.
> >>
> >> First this is what my setup looks like.
> >>
> >> Primary backend (pvr)
> >> One pvr-350 and one pvr-250
> >>
> >> Slave backend (pvr2)
> >> One DVB-C
> >>
> >> I am using the cvs from today but i have had this problem for a
> >> couple of weeks.
> >>
> >> After starting both backends this is what the master backend
> >> status looks like
> >>
> >> Encoder status
> >> Encoder 1 is remote on pvr2 and is recording.
> >> Encoder 2 is local on pvr and is not recording.
> >> Encoder 3 is local on pvr and is not recording.
> >>
> >> And this is the slave backend
> >> Encoder status
> >> Encoder 1 is local on pvr2 and is not recording.
> >
> > Hmm... odd.  The master thinks the slave is recording, but the
> > slave thinks it's free.  Was the status from the master & slave
> > taken at the same time (i.e., which one did you query first and did
> > a recording start or finish in between getting the 2 status
> > reports?)
>
> That was me screwing up a bit, both backends report the encoder as
> not recording and this is just after starting the backends.
>
> >> When i try to watch livetv on a dvb channel this is what i get in
> >> the masterbackand debug log.
> >>
> >> 2004-03-09 15:44:54 Getting next free recorder : -1
> >> 2004-03-09 15:44:54 33      QUERY_REMOTEENCODER 1[]:[]IS_BUSY
> >>
> >> And this is one the slavebackend.
> >>
> >> 2004-03-09 15:44:54 1       0
> >
> > ???
>
> I used mythbackend -v all and this is what the only thing the
> slavebackend prints when i try to start livetv
>
> >> Scheduling a recording from a dvb channel works but the statuspage
> >> show incorrect information.
> >>
> >> This is on the slavebackend and it is correct.
> >> Encoder status
> >> Encoder 1 is local on pvr2 and is recording 'Asia Today'. This
> >> recording will end at 4:00 PM.
> >
> > Looks good...
> >
> >> This is on the masterbackend and is obviously wrong.
> >> Encoder status
> >> Encoder 1 is remote on pvr2 and is recording.
> >> Encoder 2 is local on pvr and is not recording.
> >> Encoder 3 is local on pvr and is not recording.
> >
> > Why is this wrong?
> > Encoder 1 -> DVB card on pvr2 ('remote' as seen from pvr [master])
> > Encoders 2 & 3 -> PVR-x50 cards on pvr ('local' as seen from pvr
> > [master])
>
> Again me screwing up :)
>
> >> If i use the frontend on the masterbackend i can watch this
> >> recording.
> >
> > You should be able to watch this from any frontend (provided it's
> > powerful enough to decode the DVB-encoded MPEG-2)
>
> Yes that was just to verify that it was working.
>
> >> If i switch the master and slave backend by changing the ip in the
> >> settings table the problem
> >> gets reversed and i can only watch dvb channels,
> >
> > Not sure if I followed that...
> >
> >> but if i start the
> >> slave backend and start
> >> livetv on a non dvb channel it will tune to that but it wont be
> >> able to change to dvb channels.
> >
> > Right; again, you're watching LiveTV from one of your PVR-x50
> > cards; to switch to a DVB channel use 'Y' to switch cards first.
>
> What i mean is that i make switch so that the dvb backend is master
> and the pvr-x50 is slave, if i start the dvb backend first i can use
> all tv dvb channels but if i start the slave with the pvr-x50 cards
> and the first channel it jumps to when entering livetv is a x50
> channel i will never be able to go to a dvb channel it will just
> switch back to the previous channel after trying to switch.


I don't think you quite understood me... if you start watching LiveTV on 
a channel tuned by one of your PVR-x50 cards, then you cannot switch to 
a DVB channel simply by entering the channel number of one of your DVB 
channels; you *must* use the 'Y' key (or whatever you have bound to the 
SWITCHCARDS command) to switch cards first.  Likewise in reverse... if 
you start watching LiveTV on a DVB channel, then you need to press 'Y' 
to switch to one of your PVR-x50 cards to tune non-DVB channels.  You 
may have to press 'Y' more than once, since you have 3 cards.  Even 
then, if your DVB card is busy recording something, it will never 
switch to the DVB card even if you press 'Y', until the DVB card is 
finished with any scheduled recordings.  IIRC, when you enter LiveTV 
mode, it chooses the first available card it finds, ordered by the card 
ID in the database.  So, if the slave backend (with the DVB card) is 
up, and the DVB tuner is free, *and* the DVB tuner is the first (or 
only) non-busy tuner, then LiveTV will start up with DVB channels.  If, 
however, the DVB tuner is busy, or is defined after one of the other 
tuners and one of the other tuners is available, then LiveTV will start 
up with PVR-x50 channels.  Capisci?

-JAC