[mythtv-users] HDHR QAM: Streams ok to VLC but not Mythtv

P S guierrmo at gmail.com
Thu Jan 4 11:17:28 UTC 2007


On 1/3/07, R. G. Newbury <newbury at mandamus.org> wrote:
> P S wrote:
> > On 1/3/07, R. G. Newbury <newbury at mandamus.org> wrote:
> >> P S wrote:
> >>> On 1/3/07, R. G. Newbury <newbury at mandamus.org> wrote:
> >>>
> >>>
> >>> Doing this I'll have to readd all my xmlids, right?  As my provider
> >>> does not have them defined for QAM.
> >> If you do the full scan, and end up with 400 streams, running
> >> mythfilldatabase will create a Guide entry for each channel...tunable ro
> >> not.
> >> If you already have a zap2it lineup the channels which you know you can
> >> receive will actually have data.
> >> Then you go into Live TV and attempt to watch every channel. Those that
> >> actually work, you press 'e' for the channel editor. This will show an
> >> onscreen editor where you can enter some known piece of information
> >> about the channel. It helps here, to have the Guide available so you can
> >> tell what you are looking at. If you know the channel...WGRZ..and fill
> >> that in, then press 'Probe', it will automagically fill in the remaining
> >> data..(You must use the zap2it name for the channel, not what the
> >> station likes to call itself).
> >>
> >> Then you delete the unwanted channels, from mythtv-setup or in mysql.
> >>
> >> The xmltvid is zap2it's unique descriptor for the channel...You help the
> >> process by naming the channel... then the editor retrieves the xmltvid.
> >>
> >> Helps if you have a list of the available tunable channels. Harder but
> >> not impossible if you do not have a list. I have multiple CBC channels
> >> which at certain times of the day, are all running the same program.
> >> Luckily. in the Toronto area, there is an on-line list which matches the
> >> channel name and the serviceid (PID stream number) so I backed in from
> >> there. A little deduction and induction works fine. Worst case, you skip
> >> and come back later to watch the channel until it announces itself...
> >>
> >> Geoff
> >> _______________________________________________
> >> mythtv-users mailing list
> >> mythtv-users at mythtv.org
> >> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >>
> >
> > Ok, I removed all my cards, sources, dtv_mplexes and deleted every
> > entry in the recommended tables.  Of course I backed up my db first.
> >
> > I added my HDHR tuner and created the source and scanned, unchecking
> > unencrypted only.  This didn't work, I still couldn't tune these
> > specific channels.
> >
> > I only have a problem with 10% of the channels, the majority of the
> > channels are fine.  But I know of 8 channels (there are probably more)
> > that are tunable via VLC but unwatchable in myth.  These channels lock
> > but do not play back in myth, xine will play them but there is no
> > audio.
> >
> If this is cable, I think you shoujld complain to your supplier as
> something weird is going on.
>
> Wild thought. Are the flakey channels grouped together, on the same
> frequency (same mplexid in the channel table)? I wonder if your cable co
> could be using a different tuning standard. If you look at the
> 'us-cable-Standard/IRC/HRC_QAM256' tables you will see that some channel
> frequencies in IRC/HRC are shifted relative to the Standard table. Maybe
> your 'bad' channels are actually being mistuned...although I find it
> hard to believe that it would tune a digital stream at all if it was off
> frequency.
>
> Geoff
> _______________________________________________
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> mythtv-users at mythtv.org
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>
I have one freq that I know about, 116, but 3 channels work in myth,
via vlc there are 7 viewable.  I assume there are more, but I don't
have the time to go through all the channels again.


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