[mythtvnz] Seven (au) not being scanned by mythtv

[Guy Lowe]

Steven Ellis wrote:
> On Mon, January 14, 2008 3:00 pm, Craig Whitmore wrote:
>>> Currently, I can grab the seven stream as follows:
>>>
>>> dvbstream -f 1887 -s 5100 -p v 625 626 627 -o > seven
>>>
>>> and it's glitchy but watchable. However, trying to add the transponder
>>> in
>>> mythtv and scanning it results in finding the kordia transponder (and
>>> messing up my existing channels).
>> Do you mean 7 on Optus on C1? (Aurora Encrypted Channels). If you are
>> getting Kordia then you I presume are not setting Tone to swap between D1
>> and C1 on the LNB? (Or I may be completely wrong)
>>
> 
> As your LNB LO is 10750 then 10750 + 1887 = 12637 which is the Souther
> Cross Central transponder on Optus D1.
> 
> Problem is since the recent article in the Herald that transmission has
> been replaced with a test card so you won't be able to watch much anyway.
> 
> The problem with tuning under MythTV is that MythTV updates the dtv
> multiplex information based on the information provided by the
> transmission. In the case of SC7 the information is structured for DVB-T
> rather than DVB-S. Hence after performing a scan using
> 
> 12637000 5100000 Vertical
> 
> You will need to manually modify the correct entry in the DVB multiplex
> table.
> 
> Steve
> 

It's all become clear after an hour or so of perusing feed watch forums
- I'd wrongly assumed that it was a permanent seven transmission, while
it seems likely that it'll only be on for the duration of the Australian
Open, if that.

I must have been missing something before
, because mythtv will now happily scan the transponder and find the
feed. I simply copied the appropriate NULLs from the freeview
transponders and it now records with no difficulty:

mysql> select * from dtv_multiplex;
+---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
| 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     |
+---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
|       1 |        2 |          21 |        47 |  12456000 | a         |
  22500000 | 3/4  | h        | qpsk       | NULL      | NULL         |
NULL              | NULL           |       0 | NULL          | NULL
 | NULL         | dvb        |             13 | 2008-01-14 14:18:13 |
|       2 |        2 |          22 |        47 |  12483000 | a         |
  22500000 | 3/4  | h        | qpsk       | NULL      | NULL         |
NULL              | NULL           |       0 | NULL          | NULL
 | NULL         | dvb        |              4 | 2007-12-15 18:05:05 |
|       3 |        2 |           1 |     12812 |  12637000 | a         |
   5100000 | auto | v        | qpsk       | NULL      | NULL         |
NULL              | NULL           |       0 | NULL          | NULL
 | NULL         | dvb        |             11 | 2008-01-15 01:29:19 |
+---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
3 rows in set (0.00 sec)

Thanks for the help,
Guy.