Freeview channel not recording (1 Viewer)

[PoBear]

I'm recording from UK Freeview.

I'm running 1.12.0 with four capture cards.

Last week there was a minor channel change that forced a re-tune. It appeared to effect only one channel.

I've re-tuned all of the tuners without problem I can view the channel that was effected in MP without problem, the EPG is populated, but all of the record requests for the channel fail.

If I am reading the logs correctly the stream has no audio, but when viewing the channel there is.

Thanks

 

[mm1352000]

So you're referring to "Horror Channel"?
If yes, I'm not sure how you're able to view it in MediaPortal. It appears that it doesn't have video or audio streams:
[2015-12-14 14:58:13,605] [Log ] [scheduler thread] [INFO ] - subch:0 SetMpegPidMapping
[2015-12-14 14:58:13,608] [Log ] [scheduler thread] [INFO ] - subch:0 pid:1FFF pcr
[2015-12-14 14:58:13,613] [Log ] [scheduler thread] [INFO ] - subch:0 pid:3F2 pmt
[2015-12-14 14:58:13,617] [Log ] [scheduler thread] [INFO ] - subch:0 pid:B0A type:B

Stream type "B" is means "MPEG ISO/IEC 13818-6 type B - DSM-CC U-N messages". To be honest I'm not sure exactly what that means, but it could be related to MHEG 5 (red button type stuff).
Another problem is that the PCR (program clock rate) PID is 0x1fff, which is an indicator that there is no PCR timing present. TV Server generally can't tune such channels. Timing info is required in order to decode and synchronise the video and audio properly.

Are you sure you don't have 2 "Horror Channel" copies in the TV Channels section of TV Server Configuration?

 

[CyberSimian]

Last week there was a minor channel change that forced a re-tune.

Are you sure you don't have 2 "Horror Channel" copies in the TV Channels section of TV Server Configuration?

I experienced this too. I retuned using the "Enable channel movement detection" setting. This avoided creating duplicates for almost all channels, but there were two channels that did result in duplicates -- the "Horror Channel" and one other ("CBS Reality" or "CBS Drama", I think). These are channels that perhaps moved from one MUX to another, and channel movement detection was not able to recognise that the old and new channels were the same. If you use the "Preview" facility, you can determine which channel works (the new one), and which does not (the old one). Rename the old one, and then save the changes and exit.

Start MediaPortal, go to the "Scheduled Recordings" panel, sort by channel, and then you can see the scheduled recordings for the old channel. Create the equivalent entries for the new channel. Unfortunately, I made the mistake of deleting the old channel immediately after the retune, and this deletes the recording schedule for that channel. So I had to recreate the entries for the new channel entirely from memory (not so easy these days ).

Edit: once you have created the recording schedule for the new channel, return to "TV Server Config" and delete the old channel. That will delete the entry for the old channel and delete its (now obsolete) recording schedule.

-- from CyberSimian in the UK

 

[PoBear]

Hi guys thanks for the replies.

I did have two versions of the Horror Channel installed. Bizarrely MP seemed to have attached the EPG to the one with no signal, which is why the recordings were failing, I know that makes no sense but that's the only way I can explain it.

I checked which one had a picture and deleted the other, but when I went back to schedule a recording I found that the EPG was empty, I then deleted the remaining entry and did a re-scan of all tuners, I was a bit worried because the scan found two channels again, one with a picture and one without, but I've done some test recordings and everything is working again.

Thanks again.

 

[London2012]

Last week there was a minor channel change that forced a re-tune.

Are you sure you don't have 2 "Horror Channel" copies in the TV Channels section of TV Server Configuration?

I experienced this too. I retuned using the "Enable channel movement detection" setting. This avoided creating duplicates for almost all channels, but there were two channels that did result in duplicates -- the "Horror Channel" and one other ("CBS Reality" or "CBS Drama", I think). These are channels that perhaps moved from one MUX to another, and channel movement detection was not able to recognise that the old and new channels were the same. If you use the "Preview" facility, you can determine which channel works (the new one), and which does not (the old one). Rename the old one, and then save the changes and exit.

-- from CyberSimian in the UK

Followed your advice after the Horror Channel disappeared. That channel is now back but strangely the CBS channnel has been duplicated and neither one work. Oh well, hardly watch that anyway

Edit: I checked the other CBS channel and that did not work either!

 

[CyberSimian]

Followed your advice after the Horror Channel disappeared. That channel is now back but strangely the CBS channnel has been duplicated and neither one work.

I am not sure what might be happening here. Are the two CBS channels part time (i.e. not broadcast 24-hours per day)?

If you have a TV that can receive DVB-T/T2, look at its EPG to see when the channels are broadcasting, and try "Preview" in "TV Server Config" when the channels are available. Hopefully that will allow you to identify the old (non-working) and new (working) versions of each channel.

-- from CyberSimian in the UK

 

[CyberSimian]

Followed your advice after the Horror Channel disappeared. That channel is now back but strangely the CBS channnel has been duplicated and neither one work.

I had no TV available when I wrote my reply yesterday, so I could not check the TV's EPG. I checked later and see that all of the CBS channels appear to be 24-hour channels, so the "part-time channel" explanation is not correct.

Another possibility that occurs to me is: MUXes. There are currently three DVB-T2 MUXes in the UK, but they are not all available everywhere. The two most-recent MUXes are temporary, and will exist only until the bandwidth is sold off for mobile phone use. These two MUXes are not available everywhere, and where they are available, they are sometimes broadcast at a lower power than the other MUXes, making them more difficult to receive (this applies to my location).

Although the two new MUXes provide additional HD capacity, there is a lack of broadcasters wanting to use it, so some of the capacity is used for SD channels. So what I think may have happened is that the CBS channels have moved to a DVB-T2 MUX which cannot be received at your location.

The way to check is to look at the selection of HD channels that you can receive. At my location I can receive all HD channels, and they have numbers 101 to 112, with no gaps. If you are missing one or more of these channels, there is probably one or more DVB-T2 MUXes which you are not receiving.

-- from CyberSimian in the UK