[mythtv-users] silence detection blocks jobqueue [ mythcommflag; silence.py ]

[mythtv at phipps-hutton.freeserve.co.uk]

Quoting Roger Siddons <dizygotheca at ntlworld.com>:
> On Mon, 20 Oct 2014 14:49:00 +0100, Stefan Pappalardo  
> <stefan.pappalardo at gmx.de> wrote:
>
>> I wonder if mythffmpeg should switch to the "true" audio stream by  
>> itself, or if this is the job of mythfrontend...
>>
>
> Good point. Strange we haven't stumbled on it before...
>
> To be clear: mythfrontend does handle this (somehow). This is an  
> external 3rd party script and not condoned, sanctioned or supported  
> by the devs - they're getting enough flak for other people's  
> f**k-ups at the moment!
>

This is an ffmpeg bug. The program mythffmepg is used in the script as  
it is included with the mythtv packages.  Could you try replacing  
mythffmpeg with avconv? If you don't have avconv you probably need to  
install it. It's in libav-tools on Debian.

avconv is likely to be more up-to-date than mythffmpeg and so may  
already have this bug fixed.

There is code in silence.cpp to stop after a timeout but all that dies  
is to kill the first process in the pipeline. mythffmpeg/avconv is the  
second and it will normally quit when the first process is killed but  
in this case it is hung. We could change the silence.py to pass the  
pid of the first and second pipeline processes to silence.cpp and have  
that kill both processes.

Cheers,
Tim.