[mythtv-users] Zero-length recordings

James Fidell james at fidell.co.uk
Fri Aug 17 08:23:15 UTC 2007

Nick Morrott wrote:
> On 16/08/07, James Fidell <james at fidell.co.uk> wrote:
>> I'm wondering if this is some problem with getting locked onto the
>> channel (it's a Hauppauge WinTV Nova-T) and perhaps increasing the
>> tuning delay might help?  Or is there likely to be a different issue?
>> The backend log reports nothing significant at the time.
> Increasing the tuning delay may help, as the Nova-T are known to be
> slower tuners. You might also want to add record,file,channel logging
> to the backend log whilst debugging this in case it provides any extra
> clues.

Hmmm.  Looks like it could be a more significant problem than just slow
tuning.  I'm seeing a lot of these sort of errors with those debugging
options enabled:

  2007-08-17 09:05:18.845 DVBRec(2): PID 0x12 discontinuity detected
  2007-08-17 09:05:18.961 AddTSPacket: Out of sync!!! Need to wait for
  next payloadStart PID: 0x12, continuity counter: 10 (expected 9).

I was wondering if that card was having difficulty tuning to the mux
in question, but it's one of the high-power muxes I'm having trouble
with and I've not noticed problems with the two low-power ones on the
Mendip transmitter.  A later model of the same card in the same box
works fine, too.  Time to swap the leads over and see if that makes a
difference, I guess.


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