[mythtv] Assistance debugging a DVB/PMT tuning problem

Janne Grunau janne-mythtv at grunau.be
Wed Jan 23 20:21:22 UTC 2008

On Wednesday 23 January 2008 21:06:29 Tom Dexter wrote:
> I'm getting OTA broadcasts using HD-5500 tuners.  A local PBS channel
> near me appears to have made some sort of change to their broadcast
> stream that's preventing mythtv from getting a PTM from it.  I've
> deleted and rescanned the channel and that didn't help.  I actually
> didn't expect it to, as I had already tried creating a channels.conf
> file with dvbscan and the frequency and all serviceid data in the
> database where correct to begin with.  Here's the pertinent part of
> the channels.conf file:
> WNJB-DT:183028615:8VSB:49:52:3
> NJN-3:183028615:8VSB:81:84:5
> NJN-4:183028615:8VSB:97:100:6
> Those service ids (3, 5, 6) match what's in my channels table (even
> after the rescan).  I can actually tune those with mplayer using that
> channels.conf file.  I'm not sure, but I think the two fields above
> before the programid actually identify the audio/video streams, which
> would seem to indicate that dvbscan found a PMT(??).


> Mythtv gets a lock on the channel but simply can't get a PMT.  On the
> frontend I get (LA_VG).  Here's the "-v channel" verbose output

to be useful it needs be a -v channel,record,siparser log.


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