[mythtv] Having some problems with DVB-C and mythTV 0.11

Ramon Roca ramon.roca at xcombo.com
Mon Aug 18 18:37:05 EDT 2003


I always thought that currently mythtv does not distinguish between source
types while using a card to tune to a channel, so that's why currently there
is no way of having a mix of both analog/dvb channel types and card
simultaneously in the same database or we can get unexpected results in
those configurations.

So to have both, first we have to make mythbackend choose the appropiate
card depending on the channel type.

I'm wrong here? I've seen recenbtrly a lot of discussion of having both,
which btw will be of course great!


----- Original Message -----
From: "Georg C. F. Greve" <greve at gnu.org>
To: "Development of mythtv" <mythtv-dev at mythtv.org>
Sent: Monday, August 18, 2003 4:57 PM
Subject: Re: [mythtv] Having some problems with DVB-C and mythTV 0.11


> || On Mon, 18 Aug 2003 08:04:51 +0200
>  || Ben Bucksch <linux.news at bucksch.org> wrote:
>
>  >> INSERT INTO cardinput VALUES (2,2,2,'DVB','',NULL,'N','','');
>
>  bb> startchan is missing. It should be a channum.
>
> Ah. Missed that one -- also wasn't sure whether it was required.
>
> After adding one, it definitely looks better:
> Starting up as the master server.
> Probed: /dev/video - Television
> Probed: /dev/video - Composite1
> Probed: /dev/video - S-Video
> Probed: /dev/video - Composite3
> DVBChannel: Changing to channel 54 on card 0
> Using DVB card "VES1820 based DVB-C frontend"
> tuning DVB-C to 394000000, srate=6900000
> polling....
> Getting frontend event
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI
FE_HAS_SYNC
> Bit error rate: 168480
> Signal strength: 57568
> SNR: 59881
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI
FE_HAS_SYNC
> SetPID:  310 320
>
>
>  bb> [lots of analog channels, I hope you didn't try to record from
*them*]
>
> No. They are for the analog card (cardid=1).
>
>
>  >> INSERT INTO channel VALUES
>  >> (1039,'39','',2,'Bayerisches','Bayerisches
>  >> FS','',0,'','3.br-online.de',0,32768,32768,32768,32768,'DVB-c');
>
>  bb> (Did tv_grab_de adapt the xmltv ids? They seem to match my
>  bb> grabber perfectly, from what I could see. Or did you use my
>  bb> grabber?)
>
> I use your grabber - thanks for writing that, by the way.
>
>
>  bb> The channel_dvb table is missing, that's the most interesting one
here.
>
> Sorry, forgot. Provided below for reference.
>
>
> It appears that I cannot switch to the DVB card for live TV. Whenever
> hitting "C" in live TV mode, the screen goes black for a short moment
> and then goes back to analog.
>
> The error message I get in the log is:
>
> ioctl VIDIOC_G_FMT: Invalid argument
> strange error flushing buffer ...
>
>
> I know DVB support is still in a relatively early phase. Is this a
> known issue? I seem to recall some discussions about switching live TV
> between analog/DVB.
>
> If anyone needs more data or has an idea for a fix, please let me
> know.
>
> Regards,
> Georg
>
>
>
>


----------------------------------------------------------------------------
----


> --
> Georg C. F. Greve                                       <greve at gnu.org>
> Free Software Foundation Europe                  (http://fsfeurope.org)
> Brave GNU World                            (http://brave-gnu-world.org)
>


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