[mythtv-users] Wrong Channel when recording?

[Hika van den Hoven]

Hoi Roger,

Thursday, May 14, 2015, 2:29:33 PM, you wrote:

> Den 14 maj 2015 12:47 skrev "John Pilkington" <J.Pilk at tesco.net>:
>>
>> On 14/05/15 10:17, Mike Perkins wrote:
>>>
>>> On 13/05/15 23:25, John Pilkington wrote:
>>>>
>>>> On 13/05/15 22:51, Hika van den Hoven wrote:
>>>>>
>>>>> Hoi Eric,
>>>>>
>>>>> Wednesday, May 13, 2015, 11:25:55 PM, you wrote:
>>>>>
>>>>>> On Wed, May 13, 2015 at 5:02 PM, Hika van den Hoven
>>>>>> <hikavdh at gmail.com> wrote:
>>>>>>>
>>>>>>> I did some checking and I can't find a way to set a channel as HD or
>>>>>>> SD. Only individual programs can be marked as HD by your grabber.
>>>>>
>>>>>
>>>>>> That's right.
>>>>>
>>>>>
>>>>>>> Which is weird. Why then that filter. and isn't everything on a
>>>>>>> channel either SD or HD?
>>>>>
>>>>>
>>>>>> Not exactly.  An "HD" channel may broadcast in 1080i content that was
>>>>>> upscaled from 480i.  Is that content HD or SD?  The listing (if
>>>>>> correct) should list that program as SD even if it's on an "HD"
>>>>>> channel.  The idea is that MythTV should be able to record SD
>>>>>> broadcasts of SD content and do its own upscaling (if needed), but my
>>>>>> experience has been that the listings are horribly inaccurate to the
>>>>>> point of uselessness wrt determining which programs are actually HD.
>>>>>> This was why I deleted all of the SD channels.  Too many listings
>>>>>> listed HD programs as not-HD.
>>>>>
>>>>>
>>>>>> Eric
>>>>>> _______________________________________________
>>>>>
>>>>>
>>>>> So, for the filter to work, you need different listings for the two
>>>>> channels: For the HD channel with the <video><HD> tag's where
>>>>> appropriate and without the tags for the SD channel.
>>>>>
>>>>> It would be nice if you could tag a channel as HD or SD and that
>>>>> mythfilldatabase would ignore the HD tags for an SD channel! I'm now
>>>>> thinking of a way to handle this in my grabber.
>>>>
>>>>
>>>> Is this another instance of the need to switch some recent device
> drivers
>>>> explicitly for HD or SD?  AIUI myth doesn't at present do that - see
>>>> #12342.  I
>>>> think I would expect an attempt to record HD without such a switch to
>>>> fail
>>>> because the PIDs were wrong, but...
>>>>
>>> Switching from SD to HD is a bit more fundamental than that, at least in
>>> the UK. Scanning with my SD USB tuners doesn't even recognise the
>>> existence of the HD multiplex.
>>>
>>> I'm guessing the drivers have to switch to a whole different tuning mode
>>> to change between SD and HD and it is this that is currently not
>>> happening correctly.
>>>
>>> Just sending a command "Tune to multiplex x, subchannel y" works between
>>> channels that are all SD, or all HD, but a little extra is needed
>>> changing transmission protocols - and recognising that you need to do so.
>>>
>> I'm way out of my comfort zone here, with DVB-C and SD, HD on the same
> mux, but it does seems very strange that the tech parameters are being set
> for HD and yet SD is coming through. Are other SD recordings being made
> from the same mux at the same time?  How do the HD and SD streams differ?
>>

> These two channels seem to be on different muxes.  At least I think so
> since they have different mplexids. (Different mplexids with different
> frequencies. SD is qam64 and HD is qam256. Etc etc)
> This is all on DVB-C. So I'm not sure it is the same as #12342 which is
> about switching between DVB-T and T2.

> I have a small database dump in a another letter in this thread.

> If I have these channels as two separate channels (Different channum and
> callsign) they tune correctly and the HD records in HD as expected.
> But when combined with same channum and same callsign it doesn't record HD
> even if it says so in the log. To my knowledge)

> The different channels also has different xml feeds where the HD imports
> the quality element that marks a program as HD.

So then now it's doing what you want!? I thing using the same channum
wouldn't matter, as this is only used for displaying/ordering in the
guide. So as I suspected it's having different callsigns, although I
do not know exactly where it's used. I thought it was mainly a
provider thing.

Tot mails,
  Hika                            mailto:hikavdh at gmail.com

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Zonder leven is er geen hoop
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