[mythtv-users] What happened to the ability to scan a range of channels?

[Douglas Peale]

On 08/07/2018 08:03 PM, Douglas Peale wrote:
> On 08/07/2018 10:27 AM, John Pilkington wrote:
>> On 07/08/18 17:29, jksj wrote:
>>> On 07/08/18 17:03, Douglas Peale wrote:
>>>> On 08/07/2018 01:48 AM, John Pilkington wrote:
>>>>> On 07/08/18 06:29, Douglas Peale wrote:
>>>>>> What happened to the ability to scan a range of channels?
>>>>>>
>>>>>> I have two antennas aimed about 20 degrees apart. Both see all channels from both directions, but each sees the channels from
>>>>>> its direction much better than the other direction.
>>>>>>
>>>>>> After a full scan, I must delete all channels from the other direction to prevent MythTV from choosing a source with bad
>>>>>> reception.
>>>>>>
>>>>>> While doing this, I accidentally deleted one channel. I tried to manually add it back, but I was not able to select ATSC
>>>>>> as the
>>>>>> type as it does not appear in the selection list.
>>>>>>
>>>>>> So I tried a full scan, assuming I could choose which ones to add by selecting manual. Nope. there is now way to skip one
>>>>>> channel. You can skip a type, but not a single channel.
>>>>>>
>>>>>> Worse, I had edited all of the channel numbers from xx_yy to xx.yy. MythTV changed them all back to xx_yy.
>>>>>>
>>>>>> I can't even use mythweb to edit the channels. It will display them, but when I try to save the changes, it gives me an
>>>>>> error,
>>>>>> and displays the old values.
>>>>>>
>>>>>> Rant complete.
>>>>> I haven't tried anything like this. but I think you need to define two Video Sources in mythtv-setup, one for each antenna.
>>>>> Then in the Channel scanning/editing section you should be able to scan separately for each, using a 'full scan' or perhaps,
>>>>> after a first run,
>>>>>   'all known transports.'
>>>>>
>>>> I actually am already doing this. I have three video sources defined, one each for my three antennas.
>>>>
>>>> The problem is that I had accidentally deleted a channel, so none of the scans would add it back except the full scan.
>>>> Unfortunately, that goes and adds all the channels from two antennas, a few from the third, and changes the channel number on
>>>> all of them.
>>>>
>>>> I end up with 54 channels for which I need to edit or delete every one. To edit 54_1 to 54.1, requires 11 keystrokes in myth
>>>> backend setup. It is a little easier in mythweb, but mythweb was not working at the time.
>>>>
>>> The channel editor in Mythsetup allows individual transponder scanning, so if you get the details from
>>> https://en.kingofsat.net/freqs.php?&pos=28.2E&standard=All&ordre=freq&filtre=Clear
>>>
>>> its pretty simple to restore deleted items without sucking in the lot.
>>>
>> I had assumed that you were 'terrestrial' and this is talking 'satellite' and I think we're both in the UK, so our
>> mythtv-setups may look different from what you see.  But it should still be possible to scan a single 'transport' on the
>> affected Video Source, so (if you know or can find out which frequency you want) reducing the number of channels needing
>> attention.
>>
>> John P
>>
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> Yes, I am in the US, using over the air antennas receiving ATSC broadcasts.
>
> If I look at my options in mythtvbackendsetup, they are "Full Scan", "Import existing scan", "Scan of all existing transports",
> and "Scan of single existing transport". I'm not sure what they mean by "transport" I assume that would correspond to a channel
> and sub-channel. What I want to scan is an arbitrary channel, not an "existing transport" I accidentally deleted the transport,
> so it is no longer existing.
>
> There is no tool tip for the "Scan Type", so I must judge by the name what it does. I tried scanning a single existing
> transport. It scanned channel 2. There was no option for me to specify which channel to scan.
>
> So if a new station appears, the only way to add that new station is to do a full scan, and then go and edit every single
> channel again.
> edit for brevity
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I found that one can specify the channel to scan. One must use the right arrow after having selected scan single existing transport.

It was well hidden in the UI.



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