Scan missing channels.

[snknts]

using winTV or kaffeine finds some channels that nextpvr does not:


The Scan logs snippet seems to indicate it finds something..
2022-05-27 21:53:32:473 [DEBUG] >>> Scanning 509028615
2022-05-27 21:53:41:995 [DEBUG] >>> Scanning@continue3
2022-05-27 21:53:41:995 [DEBUG] >>> Scanning@next
2022-05-27 21:53:41:995 [DEBUG] >>> Scanning 515028615
2022-05-27 21:53:47:812 [DEBUG] ~3~KANG  ~KANG  ~1~515028615~31.1
2022-05-27 21:53:47:812 [DEBUG] ~1~Univisn~Univisn~1~515028615~41.1
2022-05-27 21:53:47:812 [DEBUG] ~2~LATV  ~LATV  ~1~515028615~41.2
2022-05-27 21:53:47:812 [DEBUG] >>> Scanning@about to store
2022-05-27 21:53:47:812 [DEBUG] >>> Scanning@about to free loop
2022-05-27 21:53:47:812 [DEBUG] >>> Scanning@about to start next loop (baa70560)
2022-05-27 21:53:47:812 [DEBUG] >>> Scanning@next
2022-05-27 21:53:47:812 [DEBUG] >>> Scanning 521028615
2022-05-27 21:54:01:167 [DEBUG] >>> Scanning@about to store
2022-05-27 21:54:01:167 [DEBUG] >>> Scanning@about to free loop
2022-05-27 21:54:01:167 [DEBUG] >>> Scanning@about to start next loop (baa71a60)
2022-05-27 21:54:01:167 [DEBUG] >>> Scanning@next
2022-05-27 21:54:01:167 [DEBUG] >>> Scanning 527028615
2022-05-27 21:54:17:678 [DEBUG] >>> Scanning@continue3
2022-05-27 21:54:17:678 [DEBUG] >>> Scanning@next


(It finds 3 @515028615, they are shown in the channel results..)
(It seems to find something @521028615... it doesn't just @continue.. but the channels aren't listed in this log or results (and aren't counted))

In adapter0-ATSC-channels.conf they are there I believe:
[521.03MHz#3]
        SERVICE_ID = 3
        VIDEO_PID = 49
        AUDIO_PID = 52 53
        FREQUENCY = 521028615
        MODULATION = VSB/8
        DELIVERY_SYSTEM = ATSC

[521.03MHz#4]
        SERVICE_ID = 4
        VIDEO_PID = 65
        AUDIO_PID = 68
        FREQUENCY = 521028615
        MODULATION = VSB/8
        DELIVERY_SYSTEM = ATSC


maybe there's something strange about these channels that are tripping it up?
Any hints what I may do to get them listed?

[mvallevand]

You'd need to upload your full zipped logs. It is surprising to see OTA without the channel name.

I expect you will need a full mux capture of that frequency.

Martin

[snknts]

I'm using docker.. so there aren't a ton.


how does one do a mux capture?

[mvallevand]

Do you know how to open a bash shell into your docker?

Martin

[snknts]

I do

[mvallevand]

Then it is something like

dvbv5-zap -P -t 60 -c /config/adapter0-ATSC-channels-scan.conf 521.03MHz#4 -o /config/recordings/fullmux.ts

martin

[snknts]

It recorded it fine. (file is big.. but:

(+) Video --vid=1 (mpeg2video 1280x720 59.940fps)
Video --vid=2 (mpeg2video 1280x720 59.940fps)
(+) Audio --aid=1 --alang=eng (ac3 2ch 48000Hz)
Audio --aid=2 --alang=eng (ac3 2ch 48000Hz)
Audio --aid=3 --alang=eng (ac3 2ch 48000Hz)


it's the two stations wintv/kaffiefe can see ABC and CW

[mvallevand]

Good you will need to post the file on cloud storage for sub to look at.

Martin

[snknts]

https://drive.google.com/file/d/13qhFxtS...sp=sharing

[snknts]

I also noticed this:
~ $ dvbv5-scan t3
Scanning frequency #1 515028615
ERROR command INVERSION (6) not found during store
ERROR command INVERSION (6) not found during store
Lock (0x1f) Signal= -40.00dBm C/N= 27.97dB
ERROR dvb_read_sections: no data read on section filter
ERROR error while reading the NIT table
Scanning frequency #2 521028615
ERROR command INVERSION (6) not found during store
ERROR command INVERSION (6) not found during store
Lock (0x1f) Signal= -24.00dBm C/N= 30.00dB
ERROR dvb_read_sections: no data read on section filter
ERROR error while waiting for VCT table
ERROR dvb_read_sections: no data read on section filter
ERROR error while reading the NIT table
ERROR dvb_read_sections: no data read on section filter
ERROR error while reading the SDT table
WARNING: no SDT table - storing channel(s) without their names
Storing Service ID 3: '521.03MHz#3'
Storing Service ID 4: '521.03MHz#4'

"GOOD" channel is first.. "BAD" channel is second and gets the "error while reading the SDT table" message...


-vvv for just the good has the TVCT block with Channels.. -vv with just the bad does not..
maybe this channel sends that differently and dvb alone can't figure it out?