[mythtv-users] MythTv can't tune some channels with HDHomeRun
Nathaniel Rutman
nrutman at gmail.com
Wed Jan 30 17:14:51 UTC 2008
/usr/lib/libmyth-0.20.2.so.0 from latest mythbuntu
So I do the MythTV channel scan thing with QAM-256.
Finds a bunch of channels. But MythTV frontend ("watch live tv")
can only seem to lock onto some of them. Channels 112-117 come in
fine; channels 76-91 can't get a lock with Myth "(l___) lock".
Using vlc and setting
hdhomerun_config FFFFFFFF set /tuner0/program <number>
does get _all_ the channels.
So I'm trying to figure out:
a. what's the difference between the channels Myth can tune and those it
can't?
b. why doesn't Myth set the /tuner0/program #? (get /tuner0/program
always returns 0, even on those channels myth does tune). Is there
a way I can get it to?
c. is ss=60 (signal strength) awful? Myth can lock on with with ss=67,
and as I said, I can tune the ss=60 with vlc just fine.
dtv_multiplex is right, channels are right, mythdb's "serviceid" =
correct program id.
HDHomeRun scan reports:
SCANNING: 537000000 (us-cable:76, us-irc:76)
LOCK: qam256 (ss=60 snq=41 seq=100)
PROGRAM: 2: 32.1 KWBP-Po
PROGRAM: 3: 12.1 Fox 12
...
SCANNING: 751750000 (us-hrc:117)
LOCK: (ntsc) (ss=70 snq=0 seq=0)
SCANNING: 753000000 (us-cable:117, us-irc:117)
LOCK: qam256 (ss=67 snq=61 seq=100)
PROGRAM: 1: 0.0 (encrypted)
PROGRAM: 2: 0.0 (encrypted)
PROGRAM: 3: 0.0 (encrypted)
PROGRAM: 4: 0.0 (encrypted)
PROGRAM: 5: 0.0 (encrypted)
PROGRAM: 6: 0.0 (encrypted)
PROGRAM: 7: 0.0 (encrypted)
PROGRAM: 8: 0.0 (encrypted)
PROGRAM: 9: 0.0 (encrypted)
PROGRAM: 10: 0.0 (encrypted)
PROGRAM: 11: 0.0 (encrypted)
PROGRAM: 1074: 0.0
PROGRAM: 1102: 0.0
mysql> select
chanid,channum,freqid,sourceid,callsign,tvformat,outputfilters,mplexid,serviceid
from channel where freqid=76 or freqid=117;
+--------+---------+--------+----------+----------+----------+---------------+---------+-----------+
| chanid | channum | freqid | sourceid | callsign | tvformat |
outputfilters | mplexid | serviceid |
+--------+---------+--------+----------+----------+----------+---------------+---------+-----------+
| 1121 | 12_1 | 76 | 1 | Fox 12 | Default
| | 44 | 3 |
| 1321 | 32_1 | 76 | 1 | KWBP-Po | Default
| | 44 | 2 |
| 2180 | 117#10 | 117 | 1 | shopping | Default
| | 73 | 1074 |
| 2182 | 117#12 | 117 | 1 | spanish | Default
| | 73 | 1102 |
+--------+---------+--------+----------+----------+----------+---------------+---------+-----------+
4 rows in set (0.00 sec)
mysql> select * from channel where freqid=76 or freqid=117;
+--------+---------+--------+----------+----------+-------------------------+------+----------+--------------+------------+-------------+----------+------------+--------+-------+----------+----------+---------+---------------+---------------+---------+-----------+-----------+----------+-----------------+-----------------+
| chanid | channum | freqid | sourceid | callsign |
name | icon | finetune | videofilters | xmltvid |
recpriority | contrast | brightness | colour | hue | tvformat |
commfree | visible | outputfilters | useonairguide | mplexid | serviceid
| atscsrcid | tmoffset | atsc_major_chan | atsc_minor_chan |
+--------+---------+--------+----------+----------+-------------------------+------+----------+--------------+------------+-------------+----------+------------+--------+-------+----------+----------+---------+---------------+---------------+---------+-----------+-----------+----------+-----------------+-----------------+
| 1121 | 12_1 | 76 | 1 | Fox 12 | Fox 12
HD | | NULL | |
| 0 | 32768 | 32768 | 32768 | 32768 | Default
| 0 | 1 | | 0 | 44 |
3 | NULL | 0 | 12 | 1 |
| 1321 | 32_1 | 76 | 1 | KWBP-Po | KWBP-Portland's CW
Digi | | NULL | | | 0 |
32768 | 32768 | 32768 | 32768 | Default | 0 | 1
| | 0 | 44 | 2 | NULL
| 0 | 32 | 1 |
| 2180 | 117#10 | 117 | 1 | shopping |
Loading... | | NULL | | Loading...
| 0 | 32768 | 32768 | 32768 | 32768 | Default
| 0 | 1 | | 0 | 73 |
1074 | NULL | 0 | 0 | 0 |
| 2182 | 117#12 | 117 | 1 | spanish |
Loading... | | NULL | | Loading...
| 0 | 32768 | 32768 | 32768 | 32768 | Default
| 0 | 1 | | 0 | 73 |
1102 | NULL | 0 | 0 | 0 |
+--------+---------+--------+----------+----------+-------------------------+------+----------+--------------+------------+-------------+----------+------------+--------+-------+----------+----------+---------+---------------+---------------+---------+-----------+-----------+----------+-----------------+-----------------+
4 rows in set (0.00 sec)
mysql> select * from dtv_multiplex where mplexid=44 or mplexid=73;
+---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
| 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 |
+---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
| 44 | 1 | NULL | NULL | 537000000 | NULL
| NULL | NULL | NULL | qam_256 | NULL | NULL |
NULL | NULL | 0 | NULL | NULL
| NULL | atsc | 33 | 2008-01-29 10:11:42 |
| 73 | 1 | NULL | NULL | 753000000 | NULL
| NULL | NULL | NULL | qam_256 | NULL | NULL |
NULL | NULL | 0 | NULL | NULL
| NULL | atsc | 33 | 2008-01-29 10:13:42 |
+---------+----------+-------------+-----------+-----------+-----------+------------+------+----------+------------+-----------+--------------+-------------------+----------------+---------+---------------+-----------+--------------+------------+----------------+---------------------+
2 rows in set (0.00 sec)
mysql>
mysql>
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