[mythtv-users] Tuning to DVB channel without transmisson

Ian Barton lists at manor-farm.org
Tue Jun 30 19:18:52 UTC 2009

>>>>  Our MythTV (0.21-fixes) seems to freeze with a black screen when trying
>> to
>>>>  tune to a DVB channel wothout transmission.
>>>>  This happens regularly here as we have childrens channels that stop
>>>>  transmitting at 18:00 and starts again in the morning. If the last
>> channel my
>>>>  children watched was one of these and I continue watching later in the
>> evening
>>>>  I am had.
>>>>  The only way I have been able to get out of this is editing the
>> mythconverg
>>>>  database by hand.
>>>>  Is there any easier workaround or do I have something wrong in my
>> setup?
>>> Do you have 'Interactive TV' [1] enabled? If you do, and the channel
>>> displays an off-air broadcast message, you should be able to choose
>>> another channel normally if you tune to the channel whilst it is not
>>> broadcasting.
>>> [1] configured in mythfrontend TV setup
>>  This doesn't seem to work for me. I can see the off air message, but the
>> channel won't retune. I would like to solve it if possible as having to
>> select a different tuner significantly impacts WAF.
> Which channels don't work?
> I've just tried this for BBC Three BBC Four (which are currently
> off-air until 1900) and Virgin ! +1 (back on at 1800) and got the
> off-air placeholder text (saying e.g. "BBC Three is available from
> 7.00pm daily..." and could use the OSD browser or direct channel
> number entry to change to another channel. These are the only 3
> channels on UK DVB-T that I might tune to in LiveTV.
> I guess success depends on the particular broadcaster and whether they
> provide MHEG data/graphics to permit "tuning" to an off-air channel,
> but since the introduction of the MHEG interactive TV browsing I don't
> seem to have gotten stuck on these channels before.

None of them work for me - BBC4, CBBC, Virgin 1, Yesterday. I can see 
the off air place holder, but whatever method I use to change channel 
fails. I'll try tuning up the logging level tonight and see what happens 
in the morning.

I often record things from BBC4 in the evening and the children watch 
BBC, so when Anne tries to watch the news in the morning she often gets 
  a tuner which is "stuck". Even trying to change the channel to another 
one on the same multiplex fails.

I have thee different tuners - I'll try to remember to see if it's one 
particular one that gets stuck.


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