[mythtv-users] DVB-C problems
mythtv at edsons.demon.nl
Wed Jan 3 00:47:17 UTC 2007
I've been trying to get my DVB-C card working, or rather, to get MythTv
working with my cable operator. This means working around the assumption
on Myth that all cable operators are fully standards compliant. Or
rather, the assumption that all cable operators use DVB-C in the same
manner. One of the assumptions here is that the NIT-Actual will describe
the actual network layout. On DVB-C it is very common though, that
several NIT-Other are present, which each describe the network layout
for a particular geographical area. STB for these operators will present
the user with a network-id choice, and the user has to type in the
network id. The STB then searches for the NIT-Other with this
network-id, and installs from there.
This goes against the MythTv assumptions.
I've tried to work around this by manual scanning, and taken the
- determine the frequencies used on my cable (dvbsnoop of frequency, and
manual analysis of of relevant NIT-Other(s).
- enter found frequencies into dtv_multiplex
- let mythtv-setup perform scan of transports
- edit found channels to refer to correct transport stream instead of to
incorrectly assumed transports from NIT-Actual
- delelete transports from NIT-Actual from dtv_multiplex, so they do not
clutter the table (and cause confusion for me).
End result is that it still does not work, because siscanner will work
from the NIT, and takes the NIT-Actual (judging from output from "-v
As i am no coder, i would like pointers to continue this. I would very
much like to be able to use my DVB-C card to record.
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