[mythtv-users] Mapping unknown scanned channels to Schedule Direct channels for Verizon FiOS

Darren Hart darren at dvhart.com
Mon Dec 15 16:49:13 UTC 2008

On Wed, Dec 10, 2008 at 6:15 PM, OCG Technical Support <support at ocg.ca> wrote:
> Something to make life easier...hide the dupe channels (SD and HD) using
> modchannel.sh script from www.generationd.com

Unfortunately, while the main networks may have identical content, (or
close), my local PBS station appears to play more of the childrens's
programming on the SD station - odd - and what's a dvr for if not to
record Bob the Builder and Thomas the Tank Engine :-)


> Great if you rescan often..
> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Michael T. Dean
> Sent: December 10, 2008 12:39 PM
> To: Myth TV Users List
> Subject: Re: [mythtv-users] Mapping unknown scanned channels to Schedule
> Direct channels for Verizon FiOS
> On 12/10/2008 09:14 AM, Greg Woods wrote:
>> On Tue, 2008-12-09 at 22:26 -0800, Darren Hart wrote:
>>> 1) Shouldn't my Schedules Direct listings for Verizon FiOS TV Local be
>>> able to make this mapping for me?
>> Unfortunately, it seems to depend on whether or not your provider
>> includes information about what channel it is in the transmission. I'm
>> not saying this right I know, but the bottom line is, if the channel
>> scan does not pick up the XMLID,
> The xmltvid is /never/ broadcast in the stream (after all, it's
> something that's "made up" by TMS as an internal identifier of a
> channel) and, therefore, can never be picked up by the scan.  Instead,
> digital streams typically contain information such as channel number,
> callsign and/or name.  In the event that a channel has no xmltvid and
> has a callsign (or, if no callsign, then name) and channel number that
> matches exactly the callsign and channel number used by TMS/Schedules
> Direct, then mythfilldatabase will "automatically" fill in the xmltvid.
>>  then the mapping doesn't happen and
>> there is no alternative to tediously doing it manually. I have heard
>> reports from people who had everything magically "just happen" when they
>> did a scan, but here in Louisville CO, Comcast doesn't provide any
>> information at all and I have to enter all my digital channels by hand.
>> It sucks. On the flip side, when I scan my analog channels via a PVR-500
>> card, the mappings are all set up properly for me.
> Actually, you should /never/ scan analog channels with the MythTV
> channel scanner if you live in the US.  Instead, mythfilldatabase is
> responsible for retrieving and configuring them (using the "Fetch
> channels from listings source" button) since we have excellent data
> provided by SD.  If you scan for channels before doing the "Fetch
> channels...", you will end up with a broken channel configuration (and
> should really do
> http://www.gossamer-threads.com/lists/mythtv/users/264034#264034 to
> clean it up).
> I'm guessing that you didn't really scan for your analog channels, but
> just used the "Fetch channels..." button to populate them, but just
> wanted to make sure no one was confused by the statement.
>>> 2) What is supposed to go in Channel Name, Channel Number, and Channel
> Callsign?
>> What is really important is the XMLID. All this information is in your
>> Schedules Direct lineup.
> Yep.  With the xmltvid, mythfilldatabase will know that the channel is
> the same.  The rest of the information--channel name, channel number,
> and channel callsign--is for the user to edit as desired.
> The channel name is simply a long description (64 characters max) used
> to identify the channel to the user.
> The channel number is simply used to tell LiveTV which channel you want
> to watch (and really serves no other purpose) and, therefore, should be
> unique for each channel.
> The channel callsign is used to tell the scheduler to treat 2 channels
> as identical for the purposes of "this channel" recording rules.  For
> example, if you create a "Record at any time on this channel" rule for a
> channel with callsign WFTV, it will be allowed to record on any channel
> with the callsign WFTV.  Note that no 2 channels should have the same
> callsign unless they are "substantially identical."  (So, what does
> "substantially identical" mean?  Well, that's a whole other discussion.
> In my interpretation, it means that the 2 channels have exactly
> identical content, but if a /very/ small percentage of shows differ on
> the 2 channels, it should be OK to give them the same callsign.  If
> their content differs too much, however, you will have issues.)
> This means that if you have analog sources /and/ digital sources and you
> want to treat the high-definition digital versions of the channel as
> equivalent to the standard-definition analog versions (i.e. you don't
> care to set "this channel" rules to say "on high-def only"), you can
> give the high-definition and the standard-definition channel the same
> callsign.  If, instead, you want your "this channel" rules to
> distinguish between the analog and digital versions of the channel, you
> should give them different callsigns (i.e. "WKCF" and "WKCF-DT" or
> "WKCF-HD").
> Note, also, that 2 channels with the exact same callsign /and/ channel
> number are displayed only once in the EPG.  So, if you do have several
> channels with the same callsign, you may tell the EPG to hide the
> duplicates by giving them all the same channel numbers.  (This is really
> the only other use for channel number, besides specifying what channel
> to watch in LiveTV.)
> Mike
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Darren Hart

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