While we're on this topic, I've got a problem with my channel and
program data. Since this weekend when I ran mythfilldatabase a couple
times and made small edits to my zap2it configuration, my channel and
program tables have gotten corrupted. I've lost the callsign and name
of all of my <span style="font-style: italic;">broadcast</span>
channels. Yet the extended cable channels (like MTV, TLC, etc.) were
unchanged. On top of this, apparently my program data has some weird
channel displacement. So shows that should've been on channel 24 (abc)
are shown as being on channel 25 (nbc) which caused my MythTV box to
record two hours of Law and Order rather than two hours of Lost -- much
to my wife's chagrin. And... it gets weirder...this channel shift of
just the broadcast channels appears for listings yesterday but not
today -- but again tomorrow.<br>
<br>
So I'm anxious to hear how zap2it data and channel scanning information
get correlated in MythTV as well as how the program data gets
populated. At this point, I'm tempted to blow away my program table and
rerun mythfilldatabase. Perhaps that'll fix some of the issues I'm
seeing -- though it won't explain the disappearance of the callsign and
name of my broadcast channels.<br>
<br>
One more thing -- I have an HD card in this box as well -- and I maintain <span style="font-style: italic;">two</span> sources, not just one.<br><br><div><span class="gmail_quote">On 5/25/06, <b class="gmail_sendername">
H P Ladds</b> <<a href="mailto:householdwords@gmail.com">householdwords@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>I am currently capturing HDTV OTA, and am having difficulty
conceptualizing the relationship between "scanning for channels" and
importing channel info. using Zap2it.<br><br>My assumptions: <br><br>1.
mythtv-setup>Input connections>"scan for channels" uses the
capture card to scan the airwaves for signals. When it finds a signal,
Myth records the information in a .conf file. After the information is
obtained, Myth references this .conf file and predisposes the capture
card to tune-in a specific channel(s) -- rather than scanning for
channels every time a user wishes to watch or record video content.
<br><br>2. The "mythfillmydatabase" command downloads a listing of when and on what channel television programming will occur.<br><br>3.
Somehow MythTV cross references the info. obtain from Zap2it
"mythfillmydatabase" and From "scan for channels" to facilitate
recording.
<br><br>Put another way, the information obtained from "scan for
channels" is a list of hardware settings that tune in OTA stations. The
information obtained from Zap2it is a list of channel information.
These separate databases are indexed together to faciltate viewing and
recording.
<br><br>4. However, when using a cablebox one should not use
mythtv-setup's "scan for channels" feature. Zap2It's information
is used to populate both (all?) databases.<br><br><br><br><br>
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