[mythtv-users] Guide data setup for mixed ATSC/QAM & NTSC backend? Multiple xmltv feeds needed?

[Todd Ignasiak]

I am trying to clean up my MythTV configuration a bit.  Part of that effort is to use a single Zap2it / xmltv guide account, so I can deal with the expiration less frequently (with two, it seems like it's always expiring).  I have four tuners, all hooked to my cable TV connection.  The two SD tuners (PVR-500 card) can record all the analog channels (2-63).  The two ATSC/QAM tuners can record the handful of HD channels (79,116,117;  which breaks out into five visible HD channels), and cannot do SD (at least not as I have it set up.  I wouldn't want them to do SD anyway, as they don't have MPEG encoders.)

But, with my config now, it seems that MythTV doesn't know the difference between the channel types, and tries to record SD with the HD tuner, and HD with the SD tuner.  I have the TV format set to ATSC on my HD channels, and I was hoping that would allow MythTV to associate those channels with the HD capable tuners. 

I'm sure others have this same setup.  What is the recommended "best practice" for associating channels/guide data with the best tuner card?   Must I go back to my config with two guide sources, each limited to the relevant stations the tuners can receive?

Thanks for any input.

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