[mythtv-users] DVB-T bug when recording multiple programs on the same multiplex?

[John Pilkington]

On 26/10/10 12:47, William Uther wrote:
> Hi,
>    I have a weird issue that I wanted to ask about before possibly filing a bug report.  I have two DVB-T tuners.  Each is set up to record up to two programs if they're on the same multiplex.  This gives me four virtual tuners, 1 and 2 are on adaptor0 and 3 and 4 are on adaptor1.
>
> My standard evening lineup is:
>
>    7:00-7:30pm ABC News (that's Australian ABC, not US ABC :) on ABC1
>    7:15-7:35pm Daily Show on ABC2
>    7:30-8:00pm The 7:30 Report on ABC1
>    7:35-8:00pm Colbert Report on ABC2
>
> ABC1 and ABC2 are on the same multiplex.  This is normally scheduled with the ABC1 shows being recorded by tuner 1 and the ABC2 shows by tuner 2.  i.e. all four shows are actually being recorded on the same DVB-T tuner.
>
> When this lineup is scheduled, what ends up being recorded is:
>
>    7:00-7:15pm ABC News on ABC1
>    7:15-7:30pm Daily Show on ABC2
>    7:30-7:35pm The 7:30 Report on ABC1
>    7:35-8:00pm Colbert Report on ABC2
>
> i.e. if there is a recording already happening through one virtual tuner when the second virtual tuner for the same card wants to start recording a new show on that same multiplex, then the recording on the first tuner is stopped prematurely.
>
> Does anyone else see this behaviour?
>
> What can I do to help debug?
>
> Cheers,
>
> Will       :-}
>

Let me come back on this again.  I don't think I have tried the 
scheduler on a programme mix quite like this, but does your system 
normally start and stop recording at the listed change times with no 
overlap allowed?  I have front and back margins, so that around 
changeover one channel needs two (virtual) tuners.  Between 7:30 and 
7:35 I would expect all four of your available cardids to be active, not 
just the two that you seem to get.  Another 'Schedule Option' to try?

Cheers,

John P