[mythtv-users] Solved: Could not find channel XX_X in CVCT

[Roland Roberts]

A while back I noticed was that one channel stopped recording any 
shows.  Although the database *claimed* to have recorded the show, the 
recording files where not found.  Recently, I migrated mythbackend to a 
new server, dumping and reloading the database and started looking at 
why this was happening.  Watching Live TV showed no problems.  But, 
recording always failed on this one channel.  As it turns out, I really 
only record on two channels, so....

The logs were giving me messages like this:

2009-05-03 04:43:09.624 Could not find channel 1_29 in CVCT
2009-05-03 04:43:09.651
VCT Cable: channels(6) tsid(0x0) seclength(205)
Channel #0 name(WNBC_HD) 4-1 mod(SCTE mode 2) cTSID(0x0)
 pnum(1) ETM_loc(0) access_ctrl(0) hidden(0)
path_select(0) out_of_band(0) hide_guide(0) service_type(2) source_id(1)

Channel #1 name(WABC_SD) 7-2 mod(SCTE mode 2) cTSID(0x0)
 pnum(16) ETM_loc(1) access_ctrl(0) hidden(0)
path_select(0) out_of_band(0) hide_guide(0) service_type(2) source_id(16)

Channel #2 name(WNBC_4.) 4-4 mod(SCTE mode 2) cTSID(0x0)
 pnum(4) ETM_loc(0) access_ctrl(0) hidden(0)
path_select(0) out_of_band(0) hide_guide(0) service_type(2) source_id(4)

Channel #3 name(D2_15  ) 7-3 mod(SCTE mode 2) cTSID(0x0)
 pnum(15) ETM_loc(1) access_ctrl(0) hidden(0)
path_select(0) out_of_band(0) hide_guide(0) service_type(2) source_id(15)

Channel #4 name(WNBC_We) 4-2 mod(SCTE mode 2) cTSID(0x0)
 pnum(3) ETM_loc(0) access_ctrl(0) hidden(0)
path_select(0) out_of_band(0) hide_guide(0) service_type(2) source_id(3)

Channel #5 name(WABC_HD) 7-1 mod(SCTE mode 2) cTSID(0x0)
 pnum(2) ETM_loc(1) access_ctrl(0) hidden(0)
path_select(0) out_of_band(0) hide_guide(0) service_type(2) source_id(2)
||
Now, I'm not even recording on any of those, but I was getting a similar 
message for the channel I was recording.  A web search turns up others 
with the problem but I couldn't find a solution.  In my case it was easy 
once I spotted it.  The channels in question all had ATSC major and 
minor number settings which were non-zero and incorrect.  The channel 
that was recording correctly had the values set to zero.  The two that 
were causing errors had them set incorrectly.

I don't know if setting them to zero would have been acceptable, but 
fixing them to match the logs worked.  In this case, 1_29 had ATSC major 
= 1 and ATSC minor = 29 but the station in question was actually 4-2 and 
neede ATSC major = 4 and ATSC minor = 2.

Hope this helps anyone else who might run into this problem.

roland

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Roland B. Roberts, PhD                             RL Enterprises
roland at rlenter.com                            6818 Madeline Court
roland at astrofoto.org                           Brooklyn, NY 11220