[vdr] RFE: Make VDR more friendly when using combinations of DVB-S, DVB-T and DVB-C

Klaus Schmidinger Klaus.Schmidinger at tvdr.de
Sat Jun 16 18:28:10 CEST 2012

On 16.06.2012 18:21, Ludi wrote:
> Hi again,
> On Sat, 16 Jun 2012 16:53:58 +0200
> Ludi<ludi113 at hotmail.com>  wrote:
>> Hi Klaus,
>> First of all, thanks for your reply and for taking the problem into
>> account.
>> On Sat, 16 Jun 2012 15:32:11 +0200
>> Klaus Schmidinger<Klaus.Schmidinger at tvdr.de>  wrote:
>>> On 15.06.2012 17:17, Ludi wrote:
>>>> Hello,
>>>> Some time ago, I started a discussion in german on the VDR forum
>>>> about making the VDR more friendly for users that are
>>>> simultaneously using different sources to receive channels:
>>>> http://www.vdr-portal.de/board16-video-disk-recorder/board8-vdr-grundlagen/110156-%C3%BCberlegungen-zur-channels-conf-f%C3%BCr-dvb-c-s-t-mischbetrieb/index3.html
>>>> I am going to explain the problem, when receiving channels from
>>>> two different sources by using the second german public channel
>>>> named ZDF:
>>>> Suppose a user is receiving the channel ZDF by dvb-s and dvb-t.
>>>> For the VDR, these are two different channels, and it probably is
>>>> not a bad thing that the VDR differentiates between them because
>>>> these channels might be of different quality (different data
>>>> rates, etc.). However, as both sources name these channels often
>>>> the same way, it is not easily possible to differentiate between
>>>> the two channels in the VDR OSD, which is particularly annoying
>>>> for the timers, one of the main VDR features.
>>>> Currently, I work around this problem, by setting the VDR to not
>>>> update channelnames and manually adding a suffix to the
>>>> channelnames in the channels.conf. So, to use the example above
>>>> and differentiate between the two channels, they could be renamed
>>>> to ZDF-s and ZDF-t (or ZDF.s and ZDF.t, or...). In practice, I
>>>> only only rename the channelnames of the source with the smallest
>>>> number of channels; I know that the channelnames without suffix
>>>> are those from the other source.
>>>> @ Klaus
>>>> Do you think that you could add an additional option to one of
>>>> your next VDR releases, like "Add suffix about source to
>>>> channelnames"; I could imagine such an option next to the "Update
>>>> channels" option in the DVB section of the Setup in the OSD of
>>>> the VDR.
>>>> Since the information is already in the channels.conf for every
>>>> channel, I assume, that it will not require huge changes to the
>>>> VDR code to use channelnames-source (or something similar)
>>>> instead of only the channelname in the channelname field of the
>>>> channels.conf, when the corresponding option is active.
>>> I'd rather have the channels.conf entries keep the names that are
>>> broadcast in the SI data. I wouldn't want to add a "source" suffix
>>> there.
>> I understand your concerns.
>> I assumed that changing the names in the channels.conf would be the
>> best in order to make also the plugins and other software use the
>> names+source for free. Moreover, since the channels.conf can be
>> constantly updated, I thought that it would not really matter, because
>> the names without source could be restored in the channels.conf by
>> simply disabling the new option and configure the update setting to
>> also  modify the channelnames. I was not aware that there was a
>> standard for the broadcasting of the channelnames; but it does not
>> surprise me either now.
>>> However, I could imagine adding a function like
>>>     cString cChannel::NameWithSource(void)
>>> which would return things like
>>>     ZDF (DVB-T)
>>>     ZDF (DVB-S)
>>> or, shorter,
>>>     ZDF (T)
>>>     ZDF (S)
>>> and using that function instead of the Name() function at the
>>> appropriate places.
>> If I get you right, that means that if the user activates the new
>> option (I assume that you will make it optional, since most people
>> probably use only one source and do not have the problem), the VDR
>> uses the NameWithSource() method instead of the Name() method.
>> But what does this mean for the plugins? I am particularly thinking at
>> the plugins related to the timers, like the epgsearch and the live
>> plugin. Will they have to be adapted or will they also show the
>> name+source if the new option is enabled?
>> Concerning whether to use the longer or the shorter version of the
>> name+source, I would choose the shorter version to not increase
>> chances of the new name not fitting in the OSD. Thus:
>>      ZDF (S)
>>      ZDF (T)
>>      ZDF (C)
> I suppose that ZDF (I) for the IPTV reception would also make sense.
> And what about analogue and the other standards?
> http://en.wikipedia.org/wiki/Digital_television
> Maybe that the different ways of reception are already available in an
> header of the VDR or in some definition of the channels.conf.

That would be the first character of the "source" parameter in channels.conf.


>>>> In case, I am missing something, I would also like to ask
>>>> everybody reading this to let us know, if for any reason, the
>>>> idea about replacing the channelnames with channelname-source
>>>> cannot work.
>>> Well, it could work all right. But as I said, I'd like to keep that
>>> raw data in the channels.conf entries.
>> In any case, I am grateful for anything you will do to improve
>> the VDR for people receiving channels from different sources.
> Cheers,
> Ludi

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