[mythtv-users] Combining dvb-s and dvb-s2 channels

[Nick Morrott]

On 6 April 2010 23:53, Jarle Thorsen <jarlethorsen at gmail.com> wrote:
> I have a setup with two dvb-s cards and one card that can do both dvb-s and
> dvb-s2 channels. This means that the last card can tune the same channels as
> the dvb-s cards, in addition to some dvb-s2 channels that the other two cards
> can't see.
>
> How should I setup this regarding video sources?

If A is the list of channels available on DVB-S, and B is the list of
channels available on DVB-S2, you should create 2 video sources:

Source #1 contains A, and is for DVB-S-only inputs
Source #2 contains A and B, and is for DVB-S/S2 inputs

> The way I have done this today is to create one video source for the two dvb-s
> cards (filling it with channels from a channel scan on one of the dvb-s cards),
> and one video source for the dvb-s2 card, filling it with a channel scan on the
> dvb-s2 card.

Correct.

> As the dvb-s2 card gets both dvb-s and dvb-s2 channels I end up with a lot of
> channels that are available on both video sources. (Channel name and channel
> number are identical, and they are pointing to identical entries in
> dtv_multiplex (however with different mplexid.)

Each scan will detect the same multiplexes, but as the channel/mux
settings are separate for each video source, there will be some
duplication in the channel and dtv_multiplex tables. This is to be
expected and is not a problem.

In order for the scheduler to make best use of channels available on
both video sources, you need to ensure that the callsigns for each
instance of the same channel across all video sources (and having the
same listings) are the same. E.g.:

Source #1 contains channel BBC1 - callsign can be BBC1
Source #2 contains channel BBC1 - callsign must be BBC1 for the
scheduler to consider it the same as BBC1 on source #1

To improve the display of channel listings in the mythfrontend/MythWeb
EPGs, make sure that these "similar" channels also have the same
channel number and name. This will hide "copies" of the same channel,
and make greatly shorten the list of channels in the EPG when there is
much overlap across video sources.

> Am I doing this the correct way?

Absolutely.

Cheers,
Nick

-- 
Nick Morrott

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