[mythtv-users] Debugging hdhomerun - can I record the same show from multiple tuners in duplicate?

[David Engel]

On Wed, Mar 01, 2023 at 05:15:12PM +0000, Gary Buhrmaster wrote:
> On Wed, Mar 1, 2023 at 4:43 PM David Engel <david at istwok.net> wrote:
> >
> > On Wed, Mar 01, 2023 at 04:07:31PM +0000, Philip Brady wrote:
> > >
> > > I have been chasing this (or a similar) problem for months, and am in active dialogue with a developer.
> > > I'm running xubuntu 22.04, mythtv v32 with quad HDHR, DVBT/T2 in the UK.
> 
> >
> > Does your HDHR support transcoding and is it enabled?  If so,
> > recording multiple streams from the same multiplex won't work.
> >
> > David
> 
> As I recall, only the two tuner "Extend" (a US only
> product) supports transcoding (a similarity named
> product "Expand" is a 4 tuner DVB/x device for the
> EU market which does not do transcoding).

Okay.  I wasn't sure and knew it had been an issue recentely with
another user.

David

> Slow tuning can happen on certain mux's due to certain
> broadcast artifacts and the broadcasters choices of
> certain control information (in the US, some of the
> "Music Choice" channels only issue I-frames about
> once every 5-10 seconds, which has been known to
> confuse applications (not just MythTV) looking to
> decode the stream).  Sometimes the only solution
> is to increase the various signal/channel/dvb timeout
> values to something much larger than the default
> (which I think may be only 3 seconds for HDHR tuners).

-- 
David Engel
david at istwok.net