[mythtv-users] 0Kb recordings from BBC HD

[R. G. Newbury]

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".

Geoff