[mythtv-users] Moving QAM channels

[Brian J. Murrell]

Joe Henley <joehenley at kc.rr.com> wrote:
>
>The tuner I want to use for the QAM stations is a Hauppauge HVR-950Q; 
>there's also a Hauppauge HD-PVR which I use for the high def cable 
>channels.  I know the 950Q works in my Myth system; it's just Time 
>Warner screws it up.
>
>Do you suppose your HDHR script might work; at a minimum I suspect it 
>would serve as a great starting point for a script for the 950Q.  Are 
>you willing to share/post it?

The question is what is the heart of the data?  With a 950Q, you can certainly scan the signal for channels.  But if all you have is a list of existing frequencies and sub-channels within them, how do you correlate those to actual stations without something like EIT?

For example, I have a script that scans the signal for all of the digital channels every night and produces a "diff" of the changes (i.e. added/deleted channels) since the last scan but I have to manually inspect the new channels to figure out what they are.

Fortunately my cableco is not actively trying to defeat basic cable QAM viewers and leaves the basic channels alone (but for the periodic whole-lineup shuffle) and only moves around channels that are on "free preview" on a more-or-less daily basis.  Additionally, once they assign the logical value (i.e. the numeric to the right of the dash) for a digital channel they tend to leave that consistent and just move around the physical frequency they send it out on.  Now if I could just figure out what time of day they do this -- assuming it's not just random from one day to the next.

b.

P.S. It would also probably be useful/helpful if one could easily/programmatically push QAM map updates up to schedules direct -- not that I've rally investigated, so maybe one can