Opened 5 years ago

Closed 4 years ago

#12360 closed Bug Report - General (Duplicate)

duplicated channels on different frequencies appear duplicated in the same mplexid

Reported by: primijos@… Owned by:
Priority: minor Milestone: unknown
Component: MythTV - Channel Scanner Version: Master Head
Severity: medium Keywords: duplicated channels, missing multiplex
Cc: Ticket locked: no

Description

Hi, currently running mythtvversion: master [v0.28-pre-2477-g2ad4fa6]

Suppose this situation (dvb-t, Spain):

frequency 554MHz is a multiplex with 4 channels (La 1, La 2, 24h and Clan) frequency 818MHz is a multiplex with 4 channels (La 1, La 2, 24h and Clan)

actually, frequency 818MHz is being removed from the available dvb spectrum in order to use it to 4G mobile data (I guess), but, for a given period of time (>6 months), the channels listed above are being broadcast in both the old frequency (818MHz) and the new frequency (554MHz) with the same data.

Whenever a do a channel scan in all transports, mythtv claims to find channels in both of those transports but instead of inserting 4 channels in database linked to two different dtv_multiplex rows, it inserts 8 channels in database linked to the same dtv (in this case, the old 818MHz frequency). No entry corresponding to the 554MHz frequency transponder is being inserted in the database.

I'v tried adding a 554MHz dtv_multiplex row by hand in database and linking 4 of the 8 channels to it. After that, I did remove the four old channels and the bad multiplex (818MHz) and I'm able to record and watch the manually-relocated channels without any problem.

Best, Jose

Attachments (1)

scan.vdr (9.0 KB) - added by JoseO! 5 years ago.
channel scan in vdr format

Download all attachments as: .zip

Change History (4)

comment:1 Changed 5 years ago by Karl Egly

Status: newinfoneeded_new
Summary: duplicated cahnnels on different frequencies appear duplicated in the same mplexidduplicated channels on different frequencies appear duplicated in the same mplexid

This sounds very similar to #12107.

Can you check if the transports on both frequencies are the same also with regard to original_network_id and transport_id? E.g. attach a scan that contains both frequencies? (scan -o vdr /usr/share/dvb/dvb-t/HERE_COMES_THE_INITIAL_SCAN_FILE_FOR_YOUR_LOCATION.

Changed 5 years ago by JoseO!

Attachment: scan.vdr added

channel scan in vdr format

comment:2 Changed 5 years ago by primijos@…

Sorry, I didn't see #12107. Actually it looks very similar, yes. I've attached the output of scan, but instead of using the distribution's initial scan file I've used a modified one with some frequencies that are not in the original file (looks like it hasn't been updated in the repository)

Best, Jose

comment:3 Changed 4 years ago by paulh

Resolution: Duplicate
Status: infoneeded_newclosed

See #12107 for progress on this issue.

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