[mythtv-users] Issues with 4Seven on Freesat...

[Andre]

On 14 Aug 2012, at 08:31, Nick Morrott wrote:

> On 9 August 2012 14:00, Nick Morrott <knowledgejunkie at gmail.com> wrote:
>> On 8 August 2012 18:04, Robert Longbottom <rongblor at googlemail.com> wrote:
>>> 
>>> 
>>> On 7 Aug 2012, at 08:43 PM, Ian Wilkinson <null at sgtwilko.f9.co.uk> wrote:
>>> 
>>>> Hiya,
>>>> 
>>>> Is anyone else having issues receiving the channel 4Seven on Freesat?
>>>> 
>>>> The channel tunes in fine, but after a second or two the picture breaks
>>>> up.  It then stabilises for a few seconds then breaks up again.
>>>> 
>>>> I'm running Mythbuntu 10.04, 0.24-fixes, on an ION board with a TBS 6891.
>>>> 
>>> 
>>> Hi,
>>> 
>>> Yes, I see exactly the same thing. I've just tried to find 4seven on my set top box but it seems I don't have it tuned in despite having done a full rescan last weekend. I wondered if it was a general issue with signal strength. I'll try to tune it in tomorrow maybe and see if it works on there.
>>> 
>>> All my other sat channels work fine though, so I can't really believe it is a signal issue.
>> 
>> Just tested 24seven with 0.25.2 from the Debian Multimedia repo using
>> my old Hauppauge Nova-S Plus card - no problems to report.
> 
> Just had another chance to check this issue out - I'm seeing the
> frequent (~ every 5 seconds or so) picture breakups during the early
> morning advertising block. Didn't see the problem the other day when I
> posted the above.

This is just anecdotal so didn't post before but I had been seeing some breakup on Ch4 HD in the same mux (I don't use 4Seven). I later realised that the mux had changed to QPSK from 8PSK (to allow for 4 seven), although it seems that I was still able to record with the old settings for some months.

I have since retuned all muxes (BBC Olympics channels) and I've not seen any breakup since, this may be co-incidental but I noticed that Robert still has 8psk in his tuning data for this mux.

At the moment I'm only really watching Sailing programs from Ch4 HD that are on at 2 or 3am and even those from 6 months ago, so I'd put the breakup down to log rotations and XFS defrags going on at that time, now I'm not so sure.

Andre



> 
> Channel/mux details are as follows:
> 
>      transportid: 2068
>        networkid: 2
>        frequency: 11126500
>        inversion: a
>       symbolrate: 22000000
>              fec: 5/6
>         polarity: v
>       modulation: qpsk
>        bandwidth: a
>     lp_code_rate: auto
> transmission_mode: a
>   guard_interval: auto
>          visible: 0
>    constellation: qpsk
>        hierarchy: a
>     hp_code_rate: auto
>          mod_sys: UNDEFINED
>          rolloff: 0.35
>       sistandard: dvb
>   serviceversion: 33
>  updatetimestamp: 2012-07-31 03:50:37
> default_authority:
> 1 row in set (0.00 sec)
> 
> 
> Note that these are broadly in agreement with Robert's posted details,
> but there are some differences.
> 
> Cheers,
> Nick
> 
> -- 
> Nick Morrott
> 
> MythTV Official wiki: http://mythtv.org/wiki/
> MythTV users list archive: http://www.gossamer-threads.com/lists/mythtv/users
> 
> "An investment in knowledge always pays the best interest." - Benjamin Franklin
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