[mythtv] I can't get Live TV with DVB-T...

Wed Nov 26 16:00:36 EST 2003

	Hi Kenneth, sorry I haven't had a chance to look at this until
now - I had a good look on your website, but I couldn't spot your
patch - I do however already have your nifty channel editor installed -
is the patch part of it?

Anyway, I am still of the opinion that there is something wrong other
than my channel setup, as all of the channels I have in my db are
recordable.
I also don't get a no-data frontend lockup - just a clean exit, here are my
front and backend logs from an attempt to watch Live TV:

Backend:

Starting up as the master server.
2003-11-26 20:25:44 DVB#0 Using DVB card 0, with frontend Grundig 29504-401.
2003-11-26 20:25:44 DVB#0 Trying to tune to channel 4.
2003-11-26 20:25:44 DVB#0 WARNING - Your frequency setting (481833000) is
out of range. (min/max:0/0)
2003-11-26 20:25:44 DVB#0 Frequency: 481833000. BW:8Mhz HP:2/3 LP:2/3 C:64
TM:2K H:None GI:1/32
2003-11-26 20:25:44 DVB#0 Waiting for frontend event after tune.
2003-11-26 20:25:45 DVB#0 Status: CARRIER | VITERBI | SIGNAL | SYNC | LOCK.
2003-11-26 20:25:45 Enabled verbose msgs :all
--- print list start ---
Title                 Chan  ChID  StartTime       S I C  C R O N Priority
Total
Absolutely Fabulous      7  7  Nov 26 09:00pm  1 1 0  0 0 0 P        0    0
BodySnatchers            1  1  Nov 26 09:00pm  1 1 0  0 1 0 -        0    0
The Simpsons             2  2  Nov 27 06:00pm  1 1 0  0 1 0 -        0    0
Daisy Daisy              4  4  Nov 27 10:40pm  1 1 0  0 1 0 -        0    0
The Simpsons             2  2  Nov 28 06:00pm  1 1 0  0 0 0 P        0    0
Will and Grace           4  4  Nov 28 09:00pm  1 1 0  0 1 0 -        0    0
Absolutely Fabulous      1  1  Nov 28 09:00pm  1 1 0  0 0 0 A        0    0
Absolutely Fabulous      7  7  Nov 28 09:30pm  1 1 0  0 1 0 -        0    0
Bob and Margaret         4  4  Nov 29 03:00am  1 1 0  0 1 0 -        0    0
Sex and the City         4  4  Nov 30 01:05am  1 1 0  0 1 0 -        0    0
Monkey Dust              7  7  Nov 30 01:20am  1 1 0  0 0 0 A        0    0
---  print list end  ---
2003-11-26 20:25:47 Found changes in the todo list.
2003-11-26 20:25:54 MainServer::HandleAnnounce Playback
2003-11-26 20:25:54 adding: Freevo as a player 1
2003-11-26 20:25:54 2       OK
2003-11-26 20:25:54 28      0[]:[]192.168.1.150[]:[]6543
2003-11-26 20:25:54 MainServer::HandleAnnounce Playback
2003-11-26 20:25:54 adding: Freevo as a player 0
2003-11-26 20:25:54 2       OK
2003-11-26 20:25:54 90
rbuf://192.168.1.150:6543/home/video/ringbuf0.n...

--- end of Backend

--- Frontend

2003-11-26 20:25:51 Enabled verbose msgs :all
2003-11-26 20:25:54 Connecting to backend server: 192.168.1.150:6543
2003-11-26 20:25:54 21      ANN Playback Freevo 1
2003-11-26 20:25:54 17      GET_FREE_RECORDER
2003-11-26 20:25:54 21      ANN Playback Freevo 0
2003-11-26 20:25:54 44      QUERY_RECORDER 0[]:[]SETUP_RING_BUFFER[]:[]0
ERROR opening file in ThreadedFileWriter.
rbuf://192.168.1.150:6543/home/video/ringbuf0.nuv: No such file or directory

--- End of Frontend

The front and backends are running on the same machine 'Freevo' ;)

I hope this helps - if not what do I need to post?

Cheers, and thanks for all the good work - Myth is now my only video
recording
device, and I only ever record DVB-T with it.

	Joe.

-----Original Message-----
From: mythtv-dev-bounces at mythtv.org
[mailto:mythtv-dev-bounces at mythtv.org]On Behalf Of Kenneth Aafløy
Sent: 22 November 2003 22:54
To: Development of mythtv
Subject: Re: [mythtv] I can't get Live TV with DVB-T...

On Sat, 2003-11-22 at 23:36, Denis Grilli wrote:
> Alle 19:47, sabato 22 novembre 2003, Joe Tapply ha scritto:
> >       when I try and watch live TV, the frontend exits,
> > 	reporting that it can't open the ringbuf. I have looked at the
> > 	ringbuffer file, and it is indeed zero length - probably because
> > 	the backend hasn't bothered to fill it - it doesn't output any
> > 	'changing from None to Watching Live TV' message, and I do get
> > 	these status messages when watching pre-recorded stuff.
> I have similar problem with DVB-S....Frontend don't exit but don't
responde to
> press key; i forced to kill it.
> As you say the problem is ringbuffer that if is not fill force frontend
(or
> backend??) in loop...
> Is the case of wrong channel data (ex. frequency) or bad signal....
>
> I post the problem often in this mailing list but anyone answer me.....

If the backend (for whatever reason; loss of signal, wrong pids, ...)
does not receive data from the capture card, the frontend will appear to
lock up trying to receive a datastream (wait forever).

Make sure that you actually have a lock on a frequency first (use
'mythbackend -v channel' to get more info). If there is still nothing
coming out of the card, one of the other channel parameters are most
probably wrong (usually the pids). You can test the signal parameters
(everything except pids) with the signal monitor you get if you patch
your cvs checkout with the patch located here (look on under card
configuration/advanced): http://home.no/mythtv-dvb

Also, the backend should print messages if no data at all is received
from the card.

If you have problems still, post a more detailed report (include the
parameters and the location you are trying to tune).

I would appreciate any feedback on the patch.

Hope it helps,
Kenneth