Opened 15 years ago

Closed 15 years ago

#2079 closed defect (invalid)

dvb channel change problems for channels on same sat with same SID but different multiplexes

Reported by: zdzisekg@… Owned by: danielk
Priority: minor Milestone: 0.20
Component: dvb Version: head
Severity: medium Keywords: dvb channel scanner
Cc: Ticket locked: no


I think i've seen a mantion of this on the mailing lists before, but could not locate a ticket for it.

I have mythtv setup with a rotor for FTA viewing. When tunning to a channel that has a SID same as another channel on another multiplex but same sat (therefore the same "Input Connection") , the channel tuned is the one on current multiplex. Same happens even if I define a "Video Source" for each provider on the sat. Seems like the only way around it is to have each provider on the sat defined as a new "Input Connection", but this is a real hastle with FTA sats, 'cause a single sat can have many, many providers. (ex. Hispasats @ 30W, IA5 @ 97W or G10R @ 123W)

I think a possible solution could be to use the channum in the channel table as a uniqe identifier for each channel (no duplicates) and use tht to pull info about the channel for a full tune rather then just looking at the SID and tune to that SID if it is present on current multiplex.

Change History (5)

comment:1 Changed 15 years ago by Janne <janne-mythtv@…>

Component: mythtvmythcontrols
Keywords: dvb channel scanner added

Can you please attach a backend log with following verbose options "channel,record,siparser"?

The current code compares original_network_id, transport_stream_id and service_id form the DB with the received SDT. So tuning should work fine.

Ah, wait. Both channels have the same channum? That's a known bug in the channel scanner. To work properly in mythtv two different channels must not share the channum.

comment:2 Changed 15 years ago by Janne <janne-mythtv@…>

Component: mythcontrolsdvb
Owner: changed from Isaac Richards to danielk

comment:3 Changed 15 years ago by danielk

Milestone: 0.20
Version: head

zdzisekg, can you tune the channel if you change the channum?

comment:4 in reply to:  3 Changed 15 years ago by anonymous

Replying to danielk:

zdzisekg, can you tune the channel if you change the channum?

no two channels share the same channum in my database. when I scan the sat, I manually assign channum based on the goegraphical location. For ex. I scan G10R@123W. I get maybe 50 channels from five different transponders(multiplexes). So my channums would be 1230000 to 1230050. Among those 50 channels there is probably 3 or 4 with a service_id = 1.

I'll post my detailed setup info along with the log you asked for later on tonight when I get home.

comment:5 Changed 15 years ago by danielk

Resolution: invalid
Status: newclosed

channel dump and "-v record,channel" log missing, reopen when you have them.

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