[mythtv-users] Channel change script parameters
Michael T. Dean
mtdean at thirdcontact.com
Fri Feb 12 23:36:37 UTC 2010
On 02/12/2010 06:25 PM, Nick Morrott wrote:
> On 12 February 2010 22:33, Nick Rout wrote:
>> What does myth pass to the channel change script and in what order?
> A string containing channel.freqid for the channel it is attempting to
> change to.
Where the freqid can be any value you like--up to 10 characters--if
you're using an external channel change script. It's a user-editable
field available in the various channel editors (mythtv-setup, MythWeb,
and probably mythfrontend).
So, basically create unique freqid's for each of your channels (that
need not have any relationship to channel numbers) and define the
mapping between those ID's and the commands your script needs to send to
tune the identified channel.
The approach you use could be anything from encoding information into
the freqid to having a lookup table in your channel change script or
Though note that if you're just trying to pass a single extra argument
to the script that specifies which capture card is in use so it can tune
the appropriate STB, you can do that by just specifying the arg at the
end of the channel change script setting, i.e. "change_channel stb1" for
the setting would result in Myth calling "change_channel stb1 <freqid>".
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