[mythtv-users] Multi-tuner setup

[Jeffrey Ratcliffe]

On 26 March 2013 13:38, Michael T. Dean <mtdean at thirdcontact.com> wrote:
> Looks like invalid tuning parameters--i.e. due to a bad channel scan.  And,
> yes, you can have a bad channel scan and invalid tuning information and
> still get Live TV from the card.  You can use "Delete all video sources" to

OK. Just out of interest, why wouldn't deleting the channels, and
rescanning do the trick, then? Or finding the correct parameters
(how?) and updating that channel manually. Why would scanning again
produce a different result to the first time? How can I recognise a
bad scan without waiting for issues like this pop up?

And how can I get Live TV from the card, but not a scheduled recording?

Having said that, I noticed that three hours later, there was MythTV
managed to record the same channel OK, so I looked at the log and
found the excerpt below, which talks about successfully using channel
52903, which isn't listed by MythTV in the programme guide, although
in the list of the recordings in MythFrontend, the channel is given as
the 50903 which failed three hours earlier.

Regards

Jeff

Mar 25 16:00:00 pan mythbackend[2099]: I TVRecEvent tv_rec.cpp:1029
(HandleStateChange) TVRec(1): Changing from None to RecordingOnly
Mar 25 16:00:00 pan mythbackend[2099]: I TVRecEvent tv_rec.cpp:3495
(TuningCheckForHWChange) TVRec(1): HW Tuner: 1->1
Mar 25 16:00:00 pan mythbackend[2099]: W TVRecEvent dvbchannel.cpp:381
(CheckOptions) DVBChan(1:/dev/dvb/adapter0/frontend0): Selected
fec_inner parameter unsupported by this driver.
Mar 25 16:00:01 pan mythbackend[2099]: E TVRecEvent
dvbchannel.cpp:1103 (GetUncorrectedBlockCount)
DVBChan(1:/dev/dvb/adapter0/frontend0): Getting Frontend uncorrected
block count failed.#012#011#011#011eno: Operation not supported (95)
Mar 25 16:00:01 pan mythbackend[2099]: W TVRecEvent
dvbsignalmonitor.cpp:91 (DVBSignalMonitor)
DVBSM(/dev/dvb/adapter0/frontend0): Cannot count Uncorrected
Blocks#012#011#011#011eno: Operation not supported (95)
Mar 25 16:00:01 pan mythbackend[2099]: N Scheduler autoexpire.cpp:263
(CalcParams) AutoExpire: CalcParams(): Max required Free Space: 3.0 GB
w/freq: 14 min
Mar 25 16:00:01 pan mythbackend[2099]: I Scheduler scheduler.cpp:2514
(HandleRecordingStatusChange) Tuning recording: CSI: channel 52903 on
cardid 1, sourceid 2
Mar 25 16:00:01 pan mythbackend[2099]: I CoreContext scheduler.cpp:637
(UpdateRecStatus) Updating status for CSI on cardid 1 (Tuning =>
Recording)
Mar 25 16:00:01 pan mythbackend[2099]: I TVRecEvent tv_rec.cpp:3989
(TuningNewRecorder) TVRec(1): rec->GetPathname():
'/home/mythtv/recordings/52903_20130325160000.mpg'