Dual recording with 2 usb tuners

[erik123]

I recently added a second usb tuner with separate antenna to optimize the signal for a few hard to tune channels on my main antenna. When I record on my main tuner and try to watch on the second tuner, I get a message that the second tuner cannot be found. I am however able to watch the second tuner channels if I don’t watch/record on the main tuner. Logs are attached - time of issue is around 17:20 on 2/16.

[mvallevand]

First a few housekeeping things

- modify you postprocessing.bat file to redirect output to NUL
- a lot of your advanced rules are bad and need to be redone.

For the tuner it isn't working at the device level.

2023-02-16 17:11:58.230 [DEBUG][4] Failed to start device: 0x800705aa

Maybe try a reboot and if it still fails check if the software that came with it works. Also maybe zip the output from this app https://github.com/sub3/NextPVR/wiki/FilterCheck and attach it.

Martin

[erik123]

Thanks. Attached is the filter check. The tuner that is failing to start when it is watch/recording at the same time as the main tuner is watch/recording is "Digital TV".

[mvallevand]

Did you remember to zip the attachment?

Martin

[erik123]

Zipped filter log attached.

[mvallevand]

Thanks, at this point sub needs to look.

Martin

[sub]

It looks like it's an unfortunate choice of tuners, that use the same reference drivers, and the manufacturer(s) cut corners and didn't update them to give them a unique "pin medium" identifier.

The numbers highlighted below should be unique for each device.

12:00:37.110 INFO Checking KSCATEGORY_BDA_NETWORK_TUNER filters
12:00:37.116 INFO found: Conexant Polaris BDA Tuner
12:00:37.116 INFO - (input) Input0
12:00:37.116 INFO [00000000-0000-0000-0000000000000000]-00000000-00000000
12:00:37.116 INFO
12:00:37.116 INFO - (output) MPEG2 Transport
12:00:37.116 INFO [b4a73059-7e20-4459-b360788fea2605d7]-00000001-00000000
12:00:37.116 INFO
12:00:37.116 INFO
...snip...
12:00:37.116 INFO found: Digital TV
12:00:37.116 INFO - (input) Input0
12:00:37.116 INFO [00000000-0000-0000-0000000000000000]-00000000-00000000
12:00:37.116 INFO
12:00:37.116 INFO - (output) MPEG2 Transport
12:00:37.116 INFO [b4a73059-7e20-4459-b360788fea2605d7]-00000001-00000000

[sub]

You could see if this updated file helps. It tries to work around the issue.

[erik123]

Thanks! The new DLL file solved the problem.

[sub]

Great!