[mythtv-users] Help wanted with mixed SD/HD Setup (DVB-S, Astra 19.2°)
alex at apics.co.uk
alex at apics.co.uk
Sun Jan 24 21:30:25 UTC 2010
mythtv-users-bounces at mythtv.org wrote on 24/01/2010 20:23:42:
> From: Matthias Thyroff <nospam2 at thyroff.net>
> To: Discussion about mythtv <mythtv-users at mythtv.org>
> Date: 24/01/2010 20:24
> Subject: Re: [mythtv-users] Help wanted with mixed SD/HD Setup (DVB-
> S, Astra 19.2°)
> Sent by: mythtv-users-bounces at mythtv.org
> Another Sillyname wrote:
> > 2010/1/24 R. G. Newbury <newbury at mandamus.org>:
> >> On 01/24/2010 06:40 AM, Matthias Thyroff wrote:
> >>> Hello All,
> >>> being right in the process of reconfiguring my 0.22 myth system from
> >>> scratch, I am not sure how to handle the channel setup for my mixed
> >>> SD/HD setup, I hope you can set me on the right track:
> >>> Setup:
> >>> Myth Backend (Ubuntu 9.10, mythbuntu repositories for 0.22-fixes
> >>> builds)
> >>> with 1x Technisat DVB-S SD receiver and 1x Hauppauge DVB-S2 HD
> >>> both pointing to Astra 19.2°E.
> >>> Video Source: EPGDATA commercial service (XMLTV).
> >>> I have configured EPGDATA as source 1. I have linked both cards to
> >>> source.
> >> Yes, this approach is wrong. You match cards to sources, where any
> >> the source can tune ALL of the channels from that source. Your cards
> >> do that.
> >> You need to set up 2 sources even though they are pointed at the
> same actual
> >> transmitter. One source for SD, and one source for HD. That way the
> >> Hauppuage tuner is the only one which gets presented with HD
> >>> If I scan the channels with the DVB-S2 card, it will find a lot of
> >>> channels and some HD channels.
> >>> All the found channels then are available for tuning for both cards,
> >>> course this fails if I try to do that with the SD-only card.
> >>> I would not like to set up two video sources (one SD only, one SD
> >>> HD) because downloading two times ... most importantly, does not
> >>> be the right way (I could name technical reasons, too.)
> >> It is actually the correct way. If the HD receiver can also receive
> >> channels, then it will be a larger list of channels. If not you will
> >> mutually distinct channel lists.
> >>> I have tried to set up one additional video source for the few HD
> >>> channels only and limit the source to EIT data, that would be
> >>> for now (German HD channels aren't reproduced properly anyway in the
> >>> actual 0.22-fixes version from the mythbuntu repo), but I can't find
> >>> way to attach two video sources to one card.
> >> That is not possible, due to the constraint that a tuner attached to
> >> source must be able to tune all of the channels in that source.
> >>> Basically, what I would need is the possibility to exclude a number
> >>> channels from being tuned with one of my cards. Is that possible?
> >>> my approach is all wrong?
> >> You will have to set up 2 lineups. It should not be that hard with
> >> The overall download should not be that any larger being split into 2
> >> chunks. Only if the HD receiver also gets the SD channels, AND your
> >> program does NOT cache data, would the download be any bigger. The
> >> program used by mythtv for Schedules Direct caches data for re-use.
> >> version probably does too.
> >> Geoff
> >> --
> >> Please let me know if anything I say offends you.
> >> I may wish to offend you again in the future.
> >> Tux says: "Be regular. Eat cron flakes."
> >> _______________________________________________
> >> mythtv-users mailing list
> >> mythtv-users at mythtv.org
> >> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> > Also be aware that sometimes your cards will load in different order
> > unless you force the load order. It's to do with how quickly the
> > firmware loads into a card and then that card gets presented to the
> > kernel sooner. Hot reboot and Cold Reboot affects the firmware
> > loading time.
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> and thanks for both replies. I was afraid I had to create two lineups,
> that is a pitty because it is going to be two times exactly the same
> lineup, once with four additional HD channels of which three are the HD
> version of other available channels. My feeling is that the EPGDATA
> script does not do caching, well I will see.
> Regarding the device order, surprisingly it seems that the DVB-S
> Technisat very consitently is the first one up - that is good because I
> never got the UDEV-Rule writing right, I have to admit. Before, I was
> blacklisting and rc.local-loading a second card, but I did not find out
> how to blacklist the Hauppauge properly (actually, I got it blacklisted,
> but when manually loading the module, the dvb device would not be
> created, I don't know why). But that works anyway.
In case it is of any help, I couldn't get udev to do the job, so I wrote a
script to force the order of the cards...
As luck would have it I just put it on the wiki today...
Note: I know its very much not the 'correct' way to do it, but works 100%
for me..... (better than can be said for udev!)
> OK, some more channel scanning then, I am getting more and more
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> mythtv-users at mythtv.org
alex at apics.co.uk
Homer Simpson: Facts are meaningless. You could use facts to prove
anything that's even remotely true!
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