Missing channels (Hauppauge Dual HD)

[Bernard0105]

Hello,

I am testing Kodi+NextPVR as a replacement solution to Windows Media Center for my HTPC, since Win 7 end of life.
Therefore I installed NextPVR on my HTPC currently still in win 7 pro 64 bits, beside WMC, to test Kodi+nextPVR before upgrading the HTPC to Win10.

I lived in Paris, I receive the DVB-T channels directly from the Eiffel Tower to my antenna. I use a Hauppauge Dual-HD USB winTV stick, providing 2 DVB-T tuners (as well as 2 DVB-C tuners unused). In WMC I perfectly receive 35 TV channels in Full HD, and 3 additional test UHD channels are detected but unusable by WMC.

Now the issue is with NexPVR: I had no problems to configure the DUAL-HD USB devices in NextPVR, but the result of the channel scan is not complete, even when using the "All Countries - All Regions" frequency preset. I created also a new preset file for Paris Eiffel tower, with only the 8 frequencies really broadcasted by the Eiffel tower, to experiment and have a faster scanning, but the result is exactly the same. The most strange point is about the channel missing, I got only 32 channels instead of 38, but there are 2 cases :
- one frequency is completely undetected by WinPVR, this is the 506 MHz, broadcasting in France BFM TV, C8, Cnews, Cstar, Gulli
- one frequency is "partially detected" by WinPVR, this is the 498 MHZ, broadcasting the 3 UHD test channels: NextPVR has detected only one UHD test, the UHD3.
The other frequencies are perfectly detected: 482, 530, 546, 562, 586, 642 MHz and I got all their channels

On the same HTPC, WMC is able to detect the 506 MHz frequency and to play BFM TV and the others channels without any visual quality problems.
Connected to the same antenna as my HTPC, my new UHD Panasonic TV is also receiving perfectly the 38 channels, including the 3 UHD tests.

How to investigate and solve the issue ?
(I could help further to provide an updated frequency preset list for France, the one provided currently are completely outdated).

kind regards,
Bernard

[Bernard0105]

Further looking in the forum, I see exactly the same issue open by Phil78 in the software V5 section here :

https://forums.nextpvr.com/showthread.php?tid=61859

He lives in Paris like me, and have the issue on the same frequency as me (sometime detected, sometime not in his case).
How can I find the nextPVR logs ? I do not see any sticky post for the log instruction in the forum, perhaps I am blind...

[Graham]

How can I find the nextPVR logs ? I do not see any sticky post for the log instruction in the forum, perhaps I am blind...

https://github.com/sub3/NextPVR/wiki/get-help

[sub]

I've got your sample ts file for 506MHz from the linked thread. Can you also supply the same type of file for 498MHz, with the three UHD channels?

[Bernard0105]

Both issues are solved by a patch made by Sub. detailed exchange can be followed in the above Phil78 posts.

I post the patch there for convenience, as it may help other people not only for France, until the next NPVR release.
The issues are not related to hardware, but to the way the broadcast flow is setup in the country.

Many thanks Sub, you are making a great job !