[vdr] Intelligent management of simulcast DVB-S2 / DVB-T channels

Dominic Evans oldmanuk at gmail.com
Thu Feb 23 16:50:26 CET 2012

I remember seeing patches for marking channels as identical in terms of EPG
(so e.g., a DVB-S version of the channel can automatically share the EPG
entries from the DVB-T version), but has anyone worked on a patch for
identifying simulcasting channels, or even had some preliminary design
thoughts for how one could be implemented?

I can imagine at least the following two use cases:

1) When watching live TV, channel '1' automatically selects the 'best'
available version of 'BBC One London' depending on available tuners - e.g.,
rotating through BBC One HD (DVB-S2), BBC One (DVB-T2), BBC One (DVB-S) and
BBC One London (DVB-T).  This is much more intuitive than having to
manually find an available broadcast of the channel.

2) For recordings, if a timer needs to start a recording on 'BBC One
London', depending on its priority and a 'required quality' attribute it
will similarly locate a tuner to make the recording with. Assuming it needs
the DVB-S2 tuner for HD, if someone with lower priority is currently
watching live TV on BBC One HD via DVB-S2 (and only one HD tuner is
available) then they will be transparently switched down to the next
available tuner quality.
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