[mythtv-users] how properly to rescan channels

[Hika van den Hoven]

Hoi Mike,

Sunday, July 12, 2015, 12:07:22 AM, you wrote:

> On 11/07/15 22:50, Hika van den Hoven wrote:
>> Hoi UB40D,
>>
>> Saturday, July 11, 2015, 10:51:46 PM, you wrote:
>>
>>> On 11 July 2015 at 20:54, Hika van den Hoven <hikavdh at gmail.com> wrote:
>>
>>>> Hoi UB40D,
>>>>
>>>> Saturday, July 11, 2015, 9:49:45 PM, you wrote:
>>>>
>>>>>> Once a channel scan is successful, what else needs to be done to have
>>>> the
>>>>
>>>>>>> channels entered in the database?
>>>>>>> I don't recall ever doing anything special when I did this other
>>>> times.
>>>>>>
>>>>>>
>>>>>> Are the channels in the same video source you have linked to your
>>>>>> hardware in input connections?
>>>>>>
>>>>
>>>>
>>>>> I don't claim ever to have understood this fully, but I thought they
>>>> were.
>>>>
>>>>> 2.capture cards
>>>>> I have two of those
>>>>> /dev/dvb/adapterX/frontend0 for X in [0, 1]
>>>>
>>>>> 4. video sources
>>>>> I have one of these
>>>>> EIT
>>>>
>>>>> 5. input connections
>>>>> I have two of those
>>>>> [DVB: /dev/dvb/adapter0/frontend0] (dvbinput) -> EIT
>>>>> [DVB: /dev/dvb/adapter1/frontend0] (dvbinput) -> EIT
>>>>
>>>>> When I did the channel scan, the "video source" field was EIT.
>>>>
>>>>> All this looks to me pretty much the same as when the system last worked.
>>>>
>>>>> Are they linked or not? If not, what else should I do?
>>>>
>>>> It looks like they are, but for some reason the channels don't show
>>>> up. I suggest following John and Mike's suggestion. Start afresh!
>>>> Remove all inputs and sources and recreate them from scratch. It will
>>>> automatically remove any wrong setting causing this.
>>>>
>>>>
>>>>
>>
>>> Yes, I agree this sounded like the way to go. Indeed I had already done
>>> that at the time of writing the previous reply, and still channels weren't
>>> showing up.
>>
>>> Now, another update--- some good news, bad news, and a bit more voodoo.
>>
>>> The main good news: I have got channels!
>>> How did I get them?
>>> Well, previously today I had done the scan only for dvb-s2, given that I
>>> rarely watch the non-HD channels any more. The scan had worked, but no
>>> channels had appeared in the listing. Now I did the scan also for dvb-s
>>> (the non-HD ones) and, inexplicably, channels appeared. Including the HD
>>> ones. So the problem is mostly solved (though it's unclear why). Thanks to
>>> you, John and Mike all the same.
>>
>>> As for the bad news, and some extra voodoo: even though I restarted from
>>> zero and did only one scan of HD and one scan of SD, most channels appear
>>> multiple times (this happened before, and always unexplained). For example
>>> right now, if I go in
>>> Schedule recordings / search lists / films
>>> one of the first listings is "Harry Potter Deathly Hallows Pt 1", at 20:00
>>> on ITV+1, and it appears no less than TEN TIMES, apparently on different
>>> channel numbers: 10021, 10031, 10055, 10101 etc etc. Does ITV+1 really
>>> transmit on 10 different channels on the same satellite? Is there no way to
>>> deduplicate without deleting hundreds of channels manually?
>>
>> Did you delete all video sources in mythtv-setup and create a new
>> video source before doing the scans! Or you might have old channels in
>> there. Also my cable provider does send some channels on two different
>> ids.
>> If I remember right after the scan you can choose whether to
>> automatically add the new found channels or do some reviewing. After
>> your second scan on dvb-s it probably will tell you it found
>> duplicates and asks you what to do with that.
>>
> I must add here that there seems to be some confusion. EIT is NOT a Video
> Source! You must define your own Video Source - option 3, I think it is in
> mythtv-setup. THEN attach one or more tuners to that source.

> Deleting the cards will NOT remove your existing channels! Only deleting ALL
> SOURCES will do that. A 'Source' in mythtv-speak is a means of associating
> channels with tuning information, and is specific to a method of reception.
> Thus, if you have two cards that use different hardware, you might need two
> sources to use them, even if they can access the same set of channels.

> EIT is a provider of program schedule data, just like xmltv and schedules-direct
> in the US.

> Some of the words we use can be confusing, like 'source' and 'channel'. The
> differences only become apparent with experience, I'm afraid.

You're right Mike and I can add to this something that came up one or 
two month ago. Correct me if I'm not exactly right.

If you want MythTV to see two channels in different sources as one,
give them the same callsign. If you also want them to show up as one
in your EPG give them the same Channel Number

Tot mails,
  Hika                            mailto:hikavdh at gmail.com

"Zonder hoop kun je niet leven
Zonder leven is er geen hoop
Het eeuwige dilemma
Zeker als je hoop moet vernietigen om te kunnen overleven!"

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