One DVB-T channel not found

[Bernard0105]

My NPVR (5.0.9.201026) gets only 5 of 6 DVB-T multiplex in France Paris area.
It doesn't find multiplex R2 on channel 25 (506 MHz). The tuner scan log file looks like it sees the multiplex but il's unable to read the informations included (5 channels : C8, GULLI, BFM TV, CSTAR and GULLI).
My other TV application Poutchin TV, using the same tuners, works fine with this multiplex.
Also TSReader Lite reads this multiplex fine.
Increase the scandroptime parameter in config.xml has no effect.
NPVR log files and TSReader Lite HTML file are attached.
Could someone help me to solve this issue ?

Same issue as you Phil78, with frequency 506 Mhz in Paris from the Eiffel tower. However this multiplex is perfectly played by Windows Media Center on the same HTPC. I just created a post there, before seeing yours :
https://forums.nextpvr.com/showthread.php?tid=61873

For sure there is something wrong somewhere ...

Did you notice also a problem with the UHD test channels ? in my case nextPVR is detecting only UHD3, and not UHD2 nor UHD1 that are on the same frequency that UHD3, i find this is really crazy  
I suspect a signal quality filtering or detection problem within nextPVR, because the UHD multiplex is just 8Mhz below the R2, that could explain a slight decrease of the signal quality through some interference.

I will check again tonight

[phil78]

Sorry, but I don't use the UHD tests channels.
Actually, we have the same issue with TNT R2 on 506 Mhz. I am with Paris Sannois.
My other TV application, the old Poutchin TV works allways fine with the same tuners.
There is something wrong in NPVR.

[Bernard0105]

I have check today at 13h, the problem is permanent with NextPVR, and it is not a transient radio transmission issue.

TSReader is perfectly able to analyze and use this 506Mhz broadcast, as well as WMC is able to use it on the same PC than nextPVR, so why nextPVR cannot ?
I have joined TSreader screen copy.

[Graham]

I have check today at 13h, the problem is permanent with NextPVR, and it is not a transient radio transmission issue.

TSReader is perfectly able to analyze and use this 506Mhz broadcast, as wel as my WMC is able to use it on the same PC, so why nextPVR cannot ?
I have joined TSreader screen copy.

Use TScapture ... https://www.tscapture.com/ ... to capture a Full Transport Stream for the frequency and post the capture on Dropbox or somewhere.  Thanks.

[Bernard0105]

What is the capture duration required for the analysis ?

[Graham]

What is the capture duration required for the analysis ?

From my memory, the free version of TScapture allows you to capture one minute ... that should be okay.  TScapture is written by Sub who also writes NextPVR.

[Bernard0105]

Many thanks,

Here is on pCloud the 1mn capture of this 506 MHz frequency :
https://u.pcloud.link/publink/show?code=XZ7Y8RXZhd7zH7clqcfdRI4tvs3e7BwPQQ0k

There are 5 H.264 French TV channels, none are encrypted.
I have check this capture file is perfectly readable by MPC-BE, allowing to play the 5 channels.

I hope it will help to find if there is a bug somewhere in nextPVR.

[sub]

Many thanks,

Here is on pCloud the 1mn capture of this 506 MHz frequency :
https://u.pcloud.link/publink/show?code=XZ7Y8RXZhd7zH7clqcfdRI4tvs3e7BwPQQ0k

There are 5 H.264 French TV channels, none are encrypted.
I have check this capture file is perfectly readable by MPC-BE, allowing to play the 5 channels.

I hope it will help to find if there is a bug somewhere in nextPVR.

Replace your NPVRTSMon.ax file with the attached version, and let me know if it fixes 530MHz.

[Bernard0105]

It may be probably not the same bug , but here is the 1mn capture of UHD broadcast on the 498Mhz frequency in Paris :
https://u.pcloud.link/publink/show?code=...446F7OWtSX

Since this is a test broadcast it is not urgent to solve, but NextPVR detects only the UHD3 channel, while there are also UHD1 and UHD2 channels in this mux stream.
TScapture has the same bug as NextPVR, but he was able to capture the whole stream in the TS file, that I have checked with mediainfo.
MPC-BE looks able to play the 3 video streams, but a smooth play-back requires a very recent graphic cards due to the HEVC 10 bit in UHD resolution that are in those channels.

[sub]

It may be probably not the same bug , but here is the 1mn capture of UHD broadcast on the 498Mhz frequency in Paris :
https://u.pcloud.link/publink/show?code=...446F7OWtSX

Thanks. Let me know if the above patch helps with 530MHz and 498MHz.