[mythtv-users] 0.21: hdhomerun: how to record UHF HD on #1 (OTA), VHF on #2 (via cable/QAM)?

Deyan mythtv at bektchiev.net
Sat Jan 9 20:53:54 UTC 2010


On Sat, Jan 9, 2010 at 11:52 AM, Peter Watkins <peterw at tux.org> wrote:

> Folks, I could use some advice!
>
> Current setup: Located in USA. Backend+Frontend on Ubuntu 8.04 x64. Using
> the Ubuntu MythTV 0.21 package (0.21.0+fixes16838). Two SD tuners (Hauppauge
> PVR-500), two HD tuners (one HDHomerun device). Cable TV feed going to the
> SD tuners, indoor antenna feeding the HDHomerun for OTA HD.
>
> Problem #1: two local broadcasters switched from UHF to VHF and now I
> cannot receive their programming over the air. (Please just accept this as a
> given. I've tried multiple tuners, antennas, and locations -- everything shy
> of a roof-mounted aerial.)
>
> Problem #2: while my cable company currently rebroadcasts the local
> channels on unencrypted QAM, the picture quality is not as good as the OTA
> ATSC signal (I understand some cable companies compress the HD signal to
> save bandwidth).
>
> What I'd like:
> A) Connect my HD antenna to HDHomerun tuner #1, and use it as a higher
> priority tuner for the local UHF channels.
> B) Connect my cable feed to HDHomerun tuner #2 (in addition to the SD
> tuners) and use it to record the local VHF broadcasts via QAM. Ideally it
> would record any local channel (UHF or VHF) but be a lower priority so
> MythTV would always try to record the UHF programs from the antenna/ATSC.
> Less desirable (but still better than I have now) would be only using
> HDHomerun #2 for VHF channels via QAM.
>
> For me both tuners show separately in mythtv-setup so you should be able to
assign one lineup to the first tuner and a second lineup to the second
tuner.


> Problem #3:
> Schedules Direct will only let me create one listing source for local HD
> broadcasts -- and if I assign that source to both HDHomerun tuners, MythTV
> expects to see all local channels on both HDHomerun tuners -- so it
> sometimes tries to tun VHF on the antenna-fed tuner and fails (at least in
> my initial tests with Live TV; even though I asked mythtv-setup to scan for
> channels and HDHomerun could not get a lock on the VHF broadcasters, Live TV
> tries to tune them).
>
 Just create a second lineup that only includes the OTA channels in
Schedules Direct and assign it to the second tuner. Even if you can't create
more lineups for your ZIP code, just use a neighboring city's ZIP code and
create the OTA lineup for it since they should match exactly.

--dejan
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