[mythtv-users] Entering USA Cable channels into the DVB tables
Len Reed
crunchyfrog at charter.net
Tue Jan 17 00:21:48 UTC 2006
Thanks, Michael.
I'm not sure what you mean by my having PSIP data, though. The channel
line I quoted was one I cobbled together using the dvb utilities. I
started with a list of the cable frequencies and ran azap. Taking the
frequencies it found, I then ran it and dvbtraffic to snoop things.
That gave me the PIDs. I plugged those back into my channel file and
finally was able to run "azap -r" and cat combined video+audio from the
device, and play that back with mplayer. Oh, I changed the first column
to "CBS" using "vi". :)
CBS:669000000:QAM_256:2176:2177:1
Any way, I never was able to get mythbackend to record DVB using 0.18.2.
Today I ungraded to the latest SVN. myth-setup's channel scanner then
found my channels, calling them things like "99#1". I still have to use
a bit of mysql to clean that up and tie the channels to zap2it
schedules, but that I know to be straightforward.
Cheers,
Len
Michael Freeman wrote:
> for instance, my fox affiliate is on 675 MHz as service 1 according to
> PID 0x0000...which is mplexid 274, serviceid 1 for digital channel 168
> in my channels db
>
> On 1/15/06, * Michael Freeman* <mlfreeman at gmail.com
> <mailto:mlfreeman at gmail.com>> wrote:
>
> you don't need to enter the PIDs. you need the service ID from PID
> 0x0000 for each channel.
> if you set the mplexid and the serviceid, myth will find the rest
> automatically (as a crapcast subscriber, i'm envious that you have
> actual PSIP data for your channels)
>
>
>
> On 1/15/06, *Len Reed* < crunchyfrog at charter.net
> <mailto:crunchyfrog at charter.net>> wrote:
>
> I'm using 0.18.2....
>
> There have been a number of posting on the DVB channel tables,
> but it
> still isn't clear to me. I've also looked at
>
> http://www.cuymedia.com/doxygen-dev-docs/html/group__db__schema.html
>
> Maybe with an example someone can clear it up.
>
> I have an HD5000 card connected to cable. Here is a sample
> channel, as
> seen by azap. Using this information, I can use the DVB utils to
> capture the signal and play it via mplayer. The following
> example is for
> my local (Atlanta) FOX affiliate on Gwinnett Charter cable, for what
> it's worth:
>
> FOX:669000000:QAM_256:2048:2049:2
>
> So, my dtv_multiplex table has an entry with
> mplexid=4, frequency=669000000, sourceid=qam_256, etc.
>
> In the database, Fox digital is my chanid 3785. So I assume I
> should
>
> update channel set freqid = 4 where chanid = 3785;
>
> where '4' is the mplexid from the dtv_multiplex table for 669Mhz.
>
> I further guess that the channel table should get the serviceid
> (last
> column of the azap line, "2"):
>
> update channel set serviceid = 2 where chanid = 3785;
>
> Where do I encode the video and audio pids (2048 and 2049 in
> hex, 8264
> and 8265 in decimal)?
>
> Now, assuming that I can get this all working, do I then need an
> additional rows in dtv_multiplex for the other channel on 669 MHz?
>
> CBS:669000000:QAM_256:2176:2177:1
>
> Thanks for the help,
> Len
>
>
>
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