[mythtv-users] Difficulty conceptualizing the relationship of Zap2it data and scanning for channels.

[H P Ladds]

>
> No, all channel information is in the database in the channel table

(OT note -- I'm trying out the quote feature of g-mail -- just learning how
to use it in this post).

Thanks for the reply -- now I have a different set of questions as a result:

What purpose does the "scan for channels" serve if all the information is in
the channel database?

Does the database have a filename? Can I run a sed or awk on the database
and correct some errors in the listing info? (The listings are off by about
4 hours.  Haven't truly delved into this issue yet and discovered what is
wrong -- but the programming info is way off).

Andrew might be interested in this topic as well.

Again thanks, Kevin. Your help genuinely appreciated.




On 5/25/06, Kevin Kuphal <kuphal at dls.net> wrote:
>
> H P Ladds wrote:
> > I am currently capturing HDTV OTA, and am having difficulty
> > conceptualizing the relationship between "scanning for channels" and
> > importing channel info. using Zap2it.
> >
> > My assumptions:
> >
> > 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.
> No, all channel information is in the database in the channel table.
> >
> > 2. The "mythfillmydatabase" command downloads a listing of when and on
> > what channel television programming will occur.
> True
> >
> > 3. Somehow MythTV cross references the info. obtain from Zap2it
> > "mythfillmydatabase" and From "scan for channels" to facilitate
> > recording.
> Yes.  An xmltvid is inserted for each channel in the database which
> corresponds to the listings information from zap2it.
> >
> > 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.
> >
> > 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.
> Because from a cablebox or standard cable/antenna source, the channel
> frequency information is a standard and populated from tables in the
> source code.   OTA HDTV and other sources do not have this standard
> mapping and so the frequency information must be scanned for or imported.
>
> Kevin
>
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20060526/e15eb844/attachment.htm