[mythtv-users] Problem with selecting channels on a composite input to an HVR-1300

Michael T. Dean mtdean at thirdcontact.com
Sun Sep 19 19:08:47 UTC 2010


  On 09/19/2010 12:51 PM, George Poulson wrote:
>
> I have a fully working system of two frontend MythTV boxes and single 
> backend using a Hauppauge Nova DVB-S2 card .. all works fine - live 
> tv, recording, playback .. no problems at all.
> I'd now like to be able to record some programmes from 'pay' channels 
> which we receive via a subscription service on a separate DVB-S 
> receiver, and to (hopefully!) achieve this I have added a Hauppauge 
> WinTV HVR-1300 card that I had lying around to the backend, and this 
> is detected correctly by the kernel on boot.
>
> I have connected the composite video output from the external receiver 
> to the input of the HVR-1300 and if I run 'tvtime' on the backend I 
> can select it ("tvtime -d /dev/video1") and watch it with no problems, 
> but my problem is how to configure the input to this card in Myth.

http://www.gossamer-threads.com/lists/mythtv/users/232857#232857

> I may at some point also like to also use the DVB-T input on this 
> card, but for now I don't have a good enough antenna, so that can wait.
>
> I have read countless howtos and FAQs and set up the card as best I 
> can, but I can't work out how to associate any new channels with the 
> card. Ultimately I will probably use something like the 'dusky 
> control'  to change channels on the external receiver, but for now I'd 
> be happy to be able to change channels manually and just be able to 
> watch/record the input in Myth.
>
> The card is identified as [V4L:/dev/video1] , Analogue V4L Capture 
> Card, with the default input set to 'Composite1'. I use 'Radio Times 
> XML' as my [only] video source and have my current DVB-S channels from 
> the Nova card correctly linked to these schedules, and for now I also 
> have the HVR-1300 linked to this ('Input Connections : 
> [V4L:/dev/video1] (Composite) -> RadioTimes XML') but I cannot figure 
> out how to add some new channels in the channel editor such that when 
> I select them Myth knows that a particular chanel is to be found on 
> the external Composite input and not on the DVB-S2 card. I have left 
> the 'External channel change command' box blank,

Can't be blank.  See post above.

> though ultimately I will have an entry in here to change channel on 
> the external sat box; I also have no clue what to enter into the 
> 'Preset tuner to channel' or 'Starting channel' boxes. I have also 
> tried scanning for channels in the 'Connect source to input' screen, 
> but I get a whole list of unidentified channels which when I try to 
> select one from the front end, the screen goes blank (black) for a 
> while and then the error message "Irrecoverable recorder error" and 
> the backend log shows:
>
>    2010-09-19 17:25:39.403 TVRec(5): HW Tuner: 5->5
>    2010-09-19 17:25:39.601 DVBChan(5:/dev/dvb/adapter0/frontend0) 
> Error: SetChannelByString(9999): Failed to initialize multiplex options
>    2010-09-19 17:25:39.609 TVRec(5) Error: Failed to set channel to 
> 9999. Reverting to kState_None

See above.

>
> This tells me that Myth is trying to tune to this channel (which I 
> have set up using 'Create new channel' as Channel 9999) on Tuner 5 
> (/dev/dvb/adapter0/frontend0 - my internal DVB-S2 card) and not on the 
> HVR-1300's composite input. In mythweb my DVB-S2 input appears as 
> Encoder 5 and the second input as Encoder 11 ((as a complete aside, 
> these numbers seem to increment every time I remove and re-add a card 
> - is there any way to reset them to (say) 1 and 2?))

Video sources portion of 
http://www.gossamer-threads.com/lists/mythtv/users/264034#264034 .

> So: How do I tell Myth that certain channels (which I will probably 
> want to set up manually rather than scanning for) are on the external 
> composite input to the HVR-1300, and that to tune this specific 
> channel I will need to use a comand or script run outside of Myth to 
> send a command to the external receiver to tune to (say) Animal Planet 
> on channel '525', whereas other channels are already set up and 
> working on the internal DVB-S2 card?
>
> I can see where I define the command to run to change the channel; I 
> just can't see where to associate certain channels with certain input 
> cards.
>
> Sorry if this turns out to be a 'dumb' question, but I've been 
> battling with this for the whole weekend :-s

I think those links should answer all your questions.  They're 
definitely not dumb questions--it's not an intuitive process.

Mike


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