[mythtv-users] 0.24 PVR-350

[John Pilkington]

On 12/01/16 08:10, Ken Smith wrote:
>
>
> Hika van den Hoven wrote:
>>
>> Tuesday, January 12, 2016, 12:09:35 AM, you wrote:
>>
>>
>>
>>
>>> Hika van den Hoven wrote:
>>>>
>>>> Monday, January 11, 2016, 10:47:08 PM, you wrote:
>>>>
>>>>> Hi Myth people
>>>>> Please forgive this question about an old system. I have an 0.24
>>>>> system
>>>>> on Centos 6 that has a number of DVB cards and a PVR-350 that worked
>>>>> well in the pre digital era, but I have never configured it on the
>>>>> 0.24
>>>>> setup.
>>>>> I wanted to capture the UHF Analog output from a Cable TV box. So I
>>>>> configured the PVR-350, which is /dev/video4, as an IVTV device,
>>>>> mapped
>>>>> the inputs and run mythtvsetup and it shows up as capture device 18.
>>>>> I've manually entered a channel number and a frequency but I get
>>>>> errors
>>>>> like:-
>>>>> 2016-01-09 19:23:52.619 Channel(/dev/video4) Error:
>>>>> GetCurrentChannelNum(801): Failed to find Channel
>>>>> 2016-01-09 19:23:52.637 Channel(/dev/video4)::TuneTo(801): Error,
>>>>> failed
>>>>> to find channel.
>>>>> If I tune the PVR-350 to the right channel with v4l2-ctl and run
>>>>> ffplay
>>>>> /dev/video4 I get the output I'd expect so the PVR-350 is working.
>>>>> I must have missed some setting somewhere - but what?
>>>>
>>>> Which connection did you use in Input connections?
>>>> Depending on how you connected it, you have to use S-Video 1 or
>>>> Composite 1 NOT Tuner 1, if the cable box does the tuning!
>>>>
>>> Its the Tuner input I'm using as the signal from the Cable box is PAL-I
>>> on UHF at 735.25 Mhz. Even if my tuning was wrong I'd expect to see snow
>>> from the Tuner input but I get a black screen.
>> So you connected the cable box through the coax connection?
>>
>>
> Yes - coax RF connection. :-) Ken
>
> Is there a way to increase the logging of Myth's interaction with the
> capture cards so that I can get a clue as to what's happening? Initially
> I used Myth to tune the card to 735.25 Mhz by selecting what I believe
> I've configured as Ch 801 in live TV mode. In live TV mode I got a black
> screen. But when I grabbed the output of the card with ffplay I got
> snow. If Myth had tuned the card I would have expected it to have been
> left tuned on 735.25 MHz but only when I used v4l2-ctl to do the tuning
> did the cable box's video appear through ffplay. I suspect that either
> Myth is not commanding the card or Myth is making the wrong settings on
> the card. When I look in Live TV mode I get a black screen and the error
> noted above. If Myth was reading /dev/video4 I'd at least expect to see
> a snow picture even if the tuning was wrong.
>
> Any thoughts??
>
> Thanks
>
> Ken
>
Try starting the BE with 'mythbackend -v channel' , or 'mythbackend 
--setverbose none,channel' with an already running BE.

HTH,

John P