[mythtv-users] 0Kb recordings from BBC HD

[Paul Wheeler]

On 7/29/06, R. G. Newbury <newbury at mandamus.org> wrote:
>
> Paul Wheeler wrote:
> >
> >
> > On 7/28/06, *Mark Kendall* <mark.kendall at gmail.com
> > <mailto:mark.kendall at gmail.com>> wrote:
> >
> >     On 7/28/06, *Paul Wheeler* < paulrwheeler at gmail.com
> >     <mailto:paulrwheeler at gmail.com>> wrote:
> >
> >             Dear all,
> >
> >             I am trying to record some HD content with a view to
> >             eventually getting it to play back somehow. I have got the
> >             HD channels within myth but cant seem to record from it, the
> >             recording appears to go fine with no errors but the file is
> >             0kb. Has others experienced this and do other people have
> >             this working. I appear to be able to get the stream from
> >             dvbstream though havent been able to play it back yet. I
> >             have a Nova-t and avermedia 771 cards. Any help / other
> >             views would be greatly appreciated.
> >
> >
> >
> >         mysql> SELECT * FROM dtv_multiplex WHERE mplexid=7;
> >
> +---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
> >
> >         | mplexid | sourceid | transportid | networkid | frequency |
> >         inversion | symbolrate | fec  | polarity | modulation |
> >         bandwidth | lp_code_rate | transmission_mode | guard_interval |
> >         visible | constellation | hierarchy | hp_code_rate | sistandard
> >         | serviceversion | updatetimestamp     |
> >
> +---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
> >
> >         |       7 |        1 |       36868 |      9018 | 554166670 |
> >         0         |       NULL | NULL | NULL     | qpsk       |
> >         8         | 1/2          | 8                 | 1/32
> >         |       0 | qam_64        | n         | 2/3          |
> >         dvb        |              0 | 2006-07-27 11:04:20 |
> >
> >
> >     Can you try with the frequency set to 554000000?
> >
> >
> >
> > Made the change and restarted the backend(dont know if this was
> > necessary but couldnt harm) no luck, Mark are you able to give me the
> > results from your database for the bbc hd channel so i can see if any
> > other differences are stopping it, I presume you have been able to
> > record ok?
> >
> > Paul
>
> I don't remember what you said about your hardware but your 'select *'
> statement returns 'qpsk' for the modulation and 'qam_64' for
> constellation???
>
> IAUI qam_64 is a modulation standard used on cable systems. I have no
> idea what qpsk means. Are you sure that your entries are correct? If any
> of these entries are wrong, myth *will* tune the card "improperly".



I am not sure they are correct, however they are the same as Marks, and are
what was detected by myth in the channel scan. I am confused as cant see any
difference between my setup and Marks (tried changing the frequency which
was the only difference). I have tried increasing the timeouts. If any other
people with working HD streams can let me know what settings they have and
if they have any other patches other than straight recent svn would be
usefull.

Paul


Geoff
>
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