[mythtv-users] PVR-150: Can't change input from the tuner to another source.

[Ma Begaj]

2007/12/11, Sam Logen <starz909 at yahoo.com>:
>
> --- Ma Begaj <derliebegott at gmail.com> wrote:
>
> > 2007/12/10, sdkovacs <sdkovacs at gmail.com>:
> > > On Dec 8, 2007 11:06 PM, Sam Logen
> > <starz909 at yahoo.com> wrote:
> > > > Hi all.
> > > > I think that the ivtv module isn't allowing the
> > input
> > > > to change while the tuner is on.
> > >
> > > Yes, you are correct. See this thread:
> > >
> > >
> >
> http://www.gossamer-threads.com/lists/ivtv/devel/37242
> >
> >
> > According to this:
> > > With ivtv 0.10.6, I get the error "IOError: [Errno
> > 16] Device or
> > > resource busy" when setting the input (v4l2-ctl
> > -i, ioctl). With ivtv
> > > 0.10.5 it did work.
> >
> > That was changed between ivtv 0.10.6 and 0.10.5. You
> > can downgrade you
> > ivtv modules, as I do not remember that something
> > special changed for
> > PVR150 in the last few versions.
> >
> > M.
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> >
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
>
>
> Thanks for looking at this guys.  I'm sure that
> there's a reason why changing the inputs was disabled
> while the tuner is on.  I think it was the link
> provided that said that it would corrupt the mpeg
> stream.
>
>   What I'd like to know is why doesn't the command to
> switch inputs turn off the tuner and make the switch
> safely?  I'm thinking that this could be implemented
> either in Mythtv or in the driver.  I think it would
> make better sense if Mythtv itself turned off the
> tuner before making the switch to a different input.
>
> Sam


I think, it will  just corrupt the recording if you switch tuners
during recording. But it sounds logical that MythTv will stop
recording before changing to another tuner.

On the other side, MythTv must know that it should use either Tuner1
or Tuner2 at the same time. Never both of them. There is probably a
way to solve this, and I can imagine that you are not the only one
here with that problem.


Some users which are using hybrid cards with DVB and analog tuner on
the same card are not able to use them at the same time. There is a
trick with symlinks which was posted at least once on this list,
which makes MythTv believe that these tuners are actually one tuner.
That could maybe help you.


M.